Re: CQ WW CW WPX Contest May 30-31, 2020 - Beginning Fri May 29th at 8pm ESDT
John - that's great - welcome aboard - glad you're on the team and that you've have had previous experience - should be fun :)
Ralph and I have already worked through the usual stumbling blocks and have run several tests of the Hamachi VPN network and the "KY" .mc file as well as control of the remote, etc.? - all working fine - 'course when it counts, you can be sure something will go south ;)
Since I don't know what you already know, I'm going to error on the "too much information" side and you can just disregard what you don't need.
Details:
1.? Contest:? CQWWWPXCW? ?
0000 UTC Saturday (8pm EDST Fri May 29) May 30 Ends: 2359 UTC Sunday May 31
2.? Call sign:? W7DXX
3.? Entry:? Multi-One? All Band? High Power
4.? RCForb Software:? Latest Version currently? 0.9.250 of the Client
5.? N1MM Logger+:? Latest version - all running the same version - integrated with RForb - I think you have it integrated, but if you don't I can send a document that walks one through it.
6.? Network:? LogMeIn Hamachi VPN - Download and install the FREE version at:
?? When you're ready, I'll drop you the Network name and Password so we can test it and we should do a dry run or two before the contest.
So as to not clutter up the email list, we should probably think about continuing the email stream without including the total "remote group."? We can communicate via Zoom or FaceTime or Skype (if I can remember how to) or even the new Google Meet that's part of Gmail to discuss other details and set up some trials.
Once again - glad you're on board -- Don N4HH
On Thursday, May 21, 2020, 1:33:57 PM EDT, John Battin <jbattin@...> wrote:
I would like to be part of the effort … but it probably best to have a limited number of players on the first round…I was part of the W4AAN team that was quite successful in n1mm multi op with a VPN network… There a number of things that
require exact attention to detail.? The ones I recall were keeping everyone on the same n1mm version, some rotator programming, and the necessity to limit signing on and off during the contest. It might be a good idea to talk to W4AAW or one of his guru’s
and save a lot of aggravation.
John K9DX
?
Sent from for Windows 10
?
From: Don Nesbitt via groups.io
Sent: Thursday, May 21, 2020 11:38 AM
To: [email protected]
Cc: Keith at W7DXX;
Ralph Bates K1ZZI; Don Nesbitt
Subject: [W7DXXREMOTE] CQ WW CW WPX Contest May 30-31, 2020 - Beginning Fri May 29th at 8pm ESDT
?
Ralph (K1ZZI) and I are going to do a Mulit-Single entry into the coming CQ WW WPX CW contest (see:
) at the end of this month.? It should be fun to see how we and the remote perform.? If nothing else, it will be a "learning" experience!
?
I'd previously sent a lot of information to the group on this type of "distributed network operation" so this note will be brief.
We will be networking N1MM Logger+ on the remote using an Hamachi VPN network and "KY" command function keys cor CW programmed in N1MM.
Since this is all software based, no additional hardware is required either at the W7DXX server or at your home station - BUT - software installs and configurations are required
to make this work!? If you are not familiar with N1MM this is probably NOT the time to attempt to learn to use it in this networked environment.
While this will not be a full time operation, you may find us working the contest just when you need to use the remote.? If this occurs, please "ASK" if you need to use the
remote so we can relinquish control to you - and - please "? /open? " when you are done so we may resume working the contest.
If you are interested in joining our team, please let me know immediately.
Thanks - '73 es gud dxing -- Don N4HH
?
?
|
Re: CQ WW CW WPX Contest May 30-31, 2020 - Beginning Fri May 29th at 8pm ESDT
I think W4AAW is now W4RN.
George K4GM
On 5/21/2020 1:32 PM, John Battin
wrote:
toggle quoted message
Show quoted text
I would like to be part of the effort … but
it probably best to have a limited number of players on the
first round…I was part of the W4AAN team that was quite
successful in n1mm multi op with a VPN network… There a number
of things that require exact attention to detail.? The ones I
recall were keeping everyone on the same n1mm version, some
rotator programming, and the necessity to limit signing on and
off during the contest. It might be a good idea to talk to
W4AAW or one of his guru’s and save a lot of aggravation.
John K9DX
?
Sent from for Windows 10
?
?
Ralph
(K1ZZI) and I are going to do a Mulit-Single entry
into the coming CQ WW WPX CW contest (see:
) at the end of this month.? It should be fun to see
how we and the remote perform.? If nothing else, it
will be a "learning" experience!
?
I'd
previously sent a lot of information to the group
on this type of "distributed network operation" so
this note will be brief.
We
will be networking N1MM Logger+ on the remote
using an Hamachi VPN network and "KY" command
function keys cor CW programmed in N1MM.
Since
this is all software based, no additional hardware
is required either at the W7DXX server or at your
home station - BUT - software installs and
configurations are required to make this work!? If
you are not familiar with N1MM this is probably
NOT the time to attempt to learn to use it in
this networked environment.
While
this will not be a full time operation, you may
find us working the contest just when you need to
use the remote.? If this occurs, please "ASK" if
you need to use the remote so we can relinquish
control to you - and - please "? /open? " when you
are done so we may resume working the contest.
If
you are interested in joining our team, please
let me know immediately.
Thanks
- '73 es gud dxing -- Don N4HH
?
?
|
Re: CQ WW CW WPX Contest May 30-31, 2020 - Beginning Fri May 29th at 8pm ESDT
I would like to be part of the effort … but it probably best to have a limited number of players on the first round…I was part of the W4AAN team that was quite successful in n1mm multi op with a VPN network… There a number of things that
require exact attention to detail.? The ones I recall were keeping everyone on the same n1mm version, some rotator programming, and the necessity to limit signing on and off during the contest. It might be a good idea to talk to W4AAW or one of his guru’s
and save a lot of aggravation.
John K9DX
?
Sent from for Windows 10
?
toggle quoted message
Show quoted text
From: Don Nesbitt via groups.io
Sent: Thursday, May 21, 2020 11:38 AM
To: [email protected]
Cc: Keith at W7DXX;
Ralph Bates K1ZZI; Don Nesbitt
Subject: [W7DXXREMOTE] CQ WW CW WPX Contest May 30-31, 2020 - Beginning Fri May 29th at 8pm ESDT
?
Ralph (K1ZZI) and I are going to do a Mulit-Single entry into the coming CQ WW WPX CW contest (see:
) at the end of this month.? It should be fun to see how we and the remote perform.? If nothing else, it will be a "learning" experience!
?
I'd previously sent a lot of information to the group on this type of "distributed network operation" so this note will be brief.
We will be networking N1MM Logger+ on the remote using an Hamachi VPN network and "KY" command function keys cor CW programmed in N1MM.
Since this is all software based, no additional hardware is required either at the W7DXX server or at your home station - BUT - software installs and configurations are required
to make this work!? If you are not familiar with N1MM this is probably NOT the time to attempt to learn to use it in this networked environment.
While this will not be a full time operation, you may find us working the contest just when you need to use the remote.? If this occurs, please "ASK" if you need to use the
remote so we can relinquish control to you - and - please "? /open? " when you are done so we may resume working the contest.
If you are interested in joining our team, please let me know immediately.
Thanks - '73 es gud dxing -- Don N4HH
?
?
|
CQ WW CW WPX Contest May 30-31, 2020 - Beginning Fri May 29th at 8pm ESDT
Ralph (K1ZZI) and I are going to do a Mulit-Single entry into the coming CQ WW WPX CW contest (see: ) at the end of this month.? It should be fun to see how we and the remote perform.? If nothing else, it will be a "learning" experience!
I'd previously sent a lot of information to the group on this type of "distributed network operation" so this note will be brief.
We will be networking N1MM Logger+ on the remote using an Hamachi VPN network and "KY" command function keys cor CW programmed in N1MM.
Since this is all software based, no additional hardware is required either at the W7DXX server or at your home station - BUT - software installs and configurations are required to make this work!? If you are not familiar with N1MM this is probably NOT the time to attempt to learn to use it in this networked environment.
While this will not be a full time operation, you may find us working the contest just when you need to use the remote.? If this occurs, please "ASK" if you need to use the remote so we can relinquish control to you - and - please "? /open? " when you are done so we may resume working the contest.
If you are interested in joining our team, please let me know immediately.
Thanks - '73 es gud dxing -- Don N4HH
|
It is a shame you try so many things and refuse to listen to those that are in the know.
?
john
?
Sent from for Windows 10
?
toggle quoted message
Show quoted text
From: Keith Lamonica
Sent: Thursday, May 21, 2020 9:23 AM
To: keith@...
Subject: Re: New attempt
?
I have an idea for taming the 80 meter antenna problem and I will be
doing it next Wednesday (27th)
If this does not work, probably nothing will.
Wish me luck.
?
|
Keith,
I ran an OCFD for many years and while it worked great, it was a pain to get RFI out of the shack.? The design of the OCFD allows RF to travel down the shield of the coax.? I was able to cure it with a choke isolator with a ground strap to a ground rod where the coax entered the building.? In addition I looped about 10 turns of coax in front of the choke.? I got the choke isolator from RadioWorks?
He has retired and they don't have that choke available anymore.
Don
K9AQ
|
Re: 80 Meters, OCF Antennas, RFI
The balun eliminates that issue.
?
John k9dx
?
Sent from for Windows 10
?
toggle quoted message
Show quoted text
From: k2go@...
Sent: Tuesday, May 19, 2020 2:27 PM
To: [email protected]
Subject: Re: [W7DXXREMOTE] 80 Meters, OCF Antennas, RFI
?
Hello All,
Enjoy reading the digest and especially when talk gets technical. I was
a heavy equipment operator for 30 years and now, for the past 15yr, I
train others to do the same. Point being, dont have electronics
background so pse forgive the 'dumb' question.
Ref W8JI website and info:
"the terminal best able to stand the highest voltage to earth should be
on the shortest antenna side".
So does that mean that the center of the PL259 goes to "heavy
side"...80% of antenna and shell (ground) goes to 20% or vice versa.
I have a Balun Designs 4:1 balun in the closet....would this work for
OCF as described above?
Tnx for your patience with the 'newby'....been active ham since 1959,
appliance operator and all that, and still learning the technical side.
73
Tom
K2GO
--
TOM K2GO
?
|
Re: 80 Meters, OCF Antennas, RFI
Hello All,
Enjoy reading the digest and especially when talk gets technical. I was
a heavy equipment operator for 30 years and now, for the past 15yr, I
train others to do the same. Point being, dont have electronics
background so pse forgive the 'dumb' question.
Ref W8JI website and info:
"the terminal best able to stand the highest voltage to earth should be
on the shortest antenna side".
So does that mean that the center of the PL259 goes to "heavy
side"...80% of antenna and shell (ground) goes to 20% or vice versa.
I have a Balun Designs 4:1 balun in the closet....would this work for
OCF as described above?
Tnx for your patience with the 'newby'....been active ham since 1959,
appliance operator and all that, and still learning the technical side.
73
Tom
K2GO
--
TOM K2GO
|
Or put the inv. Vee back up…. It worked fine and you do not need to buy a 4:1 balun. ?Just make sure it is pruned for 3550.? Plot the SWR in detail.? You may have solved the RFI problems with your grounding modifications… If not my earlier
suggestions will work and my offer to make you a choke stands.
John k9dx
?
Sent from for Windows 10
?
toggle quoted message
Show quoted text
From: John Battin
Sent: Monday, May 18, 2020 8:17 AM
To: [email protected]
Subject: Re: [W7DXXREMOTE] RFI
?
One suggestion for 80….. Leave the OCF but pit a 4:1 balun on it…… Carefully measure across the band ?and cut it for 3550.
The OCF will have a narrower band width than the inverted VEE but you may be able to get away with poor swr on SSB because the low duty cycle of SSB will put less strain on the amplifiers’ ?tuner. There is reason to believe the OCF will
have less RF in the shack problems.
?
Johnj K9DX
?
Sent from for Windows 10
?
?
RFI issue appears solved. I redid the house ground system, and shortened coax and rotor cables. And, more chokes installed.? Next, resolve the 80m problem
|
80 Meters, OCF Antennas, RFI
Keith - thanks for doing all the work getting, or at least trying to get the RFI issue cleaned up - it's much appreciated.
I'm going to assume (usually a very bad idea) that we are dealing with a typical OCF 137 foot long antenna.? And - of course - it is typically a multi-band antenna - and - that may be part or the reason why when the Log is pointed in certain directions, RFI problems show themselves - particularly on 20 meters - remember the OCF is also "resonant" on 20 meters as well as other bands - that's by design as a multi-band antenna.
Even if I'm wrong about the length of the OCF - perhaps it is actually designed for 160 meters - even so - the following is worth exploring.
1.? Please take John's (K9DX) advice and feed it with a 4:1 balun.? Not just any old 4:1 balun; it's got to be a "good" one for low frequencies.
2.? John (K9DX) made other suggestions about grounding the feedline in several places and using chokes.? This is good advice - hopefully we can do that.
3.? Use my friend Tom Rouch's (W8JI) expertise (he's an extremely well know designer/engineer/theoritician)? and place the OCF feed point at the 80%/20% leg length which will give a fairly non-reactive 200-ohm
feedpoint.? NOTE:? the typical 1/3? 2/3 feedpoint usually used in OCF antennas does not do this and creates additional unbalance with the usual undesirable currents/radiation results.
4.? In connecting the 4:1 balun, according to Tom, there is one
caution that should be observed - the large offset
means the balun must
be a particularly good
current balun on the
lowest frequency
bands, and the
terminal best able
to stand the highest
voltage to earth
should be on the
shortest antenna
side. (Nearly all
baluns are not
symmetrical in
voltage to ground
capability for both
terminals.
If you want to do a little brushing up on the OCF antenna, you might want to study Tom's analysis.? You can find it at:
And - if you want to explore, just go to Tom's home page ( ? ) or google W8JI - it's well worth one's time to take advantage of Tom's web site.? Be sure to check out his antennas - it's quite a "farm" !!
73 - Don N4HH
On Monday, May 18, 2020, 9:24:14 AM EDT, John Battin <jbattin@...> wrote:
One suggestion for 80….. Leave the OCF but pit a 4:1 balun on it…… Carefully measure across the band ?and cut it for 3550.
The OCF will have a narrower band width than the inverted VEE but you may be able to get away with poor swr on SSB because the low duty cycle of SSB will put less strain on the amplifiers’ ?tuner. There is reason to believe the OCF will
have less RF in the shack problems.
?
Johnj K9DX
?
Sent from for Windows 10
?
From: Keith Lamonica, W7DXX
Sent: Sunday, May 17, 2020 5:15 PM
To: [email protected]
Subject: [Special] [W7DXXREMOTE] RFI
?
RFI issue appears solved. I redid the house ground system, and shortened coax and rotor cables. And, more chokes installed.? Next, resolve the 80m problem
|
One suggestion for 80….. Leave the OCF but pit a 4:1 balun on it…… Carefully measure across the band ?and cut it for 3550.
The OCF will have a narrower band width than the inverted VEE but you may be able to get away with poor swr on SSB because the low duty cycle of SSB will put less strain on the amplifiers’ ?tuner. There is reason to believe the OCF will
have less RF in the shack problems.
?
Johnj K9DX
?
Sent from for Windows 10
?
toggle quoted message
Show quoted text
From: Keith Lamonica, W7DXX
Sent: Sunday, May 17, 2020 5:15 PM
To: [email protected]
Subject: [Special] [W7DXXREMOTE] RFI
?
RFI issue appears solved. I redid the house ground system, and shortened coax and rotor cables. And, more chokes installed.? Next, resolve the 80m problem
|
RFI issue appears solved. I redid the house ground system, and shortened coax and rotor cables. And, more chokes installed.? Next, resolve the 80m problem
|
All I can think of is more chokes. I don't think we had this much trouble on 80m in the past. What is different?
|
GM Keith - when I checked the remote at 11:23Z? this morning the rig was on 75 meters LSB and the amp was in FAULT.? Guessing we still have rf problems.? Drive power was set to 20 watts which should have been OK.? I reset the amp without testing it and put the rig on 40 meters.
We might want to put out some info about using "Tune" or "M-tune" if that's what is required.
Catch up later -- Don N4HH
|
Well - almost no audio - a little 20 CW "leaking" through - either the antennas are not connected or the audio is kaput :(
|
On Mon, May 11, 2020 at 04:10 AM, John Battin wrote:
John,
I have a great deal of respect for your knowledge and talent.? Possibly, like me, you are frustrated with this stay-at-home mandate. Fortunately we have the remote allowing us to get out of the home. I was not trying to ignore your suggestions. In fact, I responded to your questions by direct email or through the group email server or the blog. I am very frustrated. Since having a couple of strokes I am restricted to a walker or wheel chair and it makes working on the remote, at times, a real chore. Thank God I have my friend Charles, KG5BVE to help. I am sorry for not communicating my appreciation to you. 73, Keith, W7DXX
I
|
?
Yesterday I lost my cool and sent a nasty message to Keith.? Not only was that note the wrong thing to do, but I made the mistake of sending it to the whole group and not privately to him.
I do not want my behavior to in anyway diminish ?respect for his tireless ?efforts to make this remote wonderful for everyone.?
Keith I am sorry.
John K9DX
?
Sent from for Windows 10
?
|
I have no idea what you are referring to when you say “What I suggested”
What has me all frosted is that I took the time to think through and document the problem and propose 4 solutions, one of which is almost a sure thing.? I got no response except we are going back to the ofc dipole.
Maybe I am mad because this is insulting… I spent 40 years at Motorola and got to be a vice president by solving problems…. Our customers paid $5000/day for me to cure RFI problems on mountain tops and buildings that had hundreds of transmitters
plus TV and Broadcast stations. I designed power amplifiers far more complex than the 1500 … so I know exactly what to expect and what will blow them up.
Oh yes, don’t spend money to send the dipole back …. Keep it … you may be putting it back up.
?
john
?
Sent from for Windows 10
?
toggle quoted message
Show quoted text
From: john battin
Sent: Sunday, May 10, 2020 3:05 PM
To: [email protected]
Subject: [W7DXXREMOTE] FW: FW: RFI
?
Maybe someone can explain to Keith what I am saying.
?
John k9dx
?
Sent from for Windows 10
?
?
OK This is what I see.
?
The 80 m inv vee is 2 wavelengths long on 20 and that puts the high voltage points at the ends and at the middle. When we put coax in the middle, ?high current flow on the outer conductor as the RF tries to find a ground.? It messes things
up not because of radiation (like the mouse problem) but because it creates current ?in anything between it and ground.? This current causes a voltage differential between your pieces of equipment. This is no big deal for the radio and amp but the computer
and networking gear do not like it at all.
That is why I have suggested.
?1.If the station has a ground, connect the coax shield directly to before it goes anywhere else.
2. Put the coax directly on the amplifier…. The theory here is that the current is causing ?a voltage on the coax switch/controller and screwing up the computer/networking.
This is a shot in the dark … but may work.
2. Add a ? wave (30 feet or so) to the feed line… That will insert a high impedance in the feed and reduce the current.
3. I build a choke that inserts a high impedance in the feed. (almost sure to work)
4. We get a 1/1 UNIN and put it in the feed. That is also almost sure to work. I will look on the dx engineering site and see what they have.
?
Last but not least …. Do not do anything to the antenna without looking at the SWR. Do not even try the amp if it is over 3.5/1
?
John
?
?
?
Sent from for Windows 10
?
?
Tied to tower. about 8' lower.
Dipole legs are at 45 degrees. And because of this retrim will be done.
Each antenna has about 8-10 foot of coax coiled.? I will shorten them
On 2020-05-09 09:20, john battin wrote:
> I assume the center of the 80 inv vee is tied close to the tower and
> under the beam.? Question 1? how close?
>
> The idea of getting the 80 out of the plane of the 20m element is good
> … but does that not just change the direction of the problem??
> About how many degrees did you swing the inv vee, and did you swing
> the other leg, or are they no longer in the same plane?
>
> You may need to trim the antenna again ….. measure the SWR
>
> If the answer to #! Is a couple feet … a good idea to try would be
> to lower where the antenna attaches to the tower… 4 or 5 feet will
> make a huge difference.? The change in 80 meter performance will not
> be noticeable…
>
> Another idea to try … increase or decrease the 80m feedline length
> by 16 feet.
>
> Sent from Mail [1] for Windows 10
>
> From: w7dxx@... <w7dxx@...>
> Sent: Saturday, May 9, 2020 9:50:17 AM
> To: john battin <jbattin@...>
> Subject: Re: FW: RFI
>
> We are going to redo the house ground tomorrow.
> As I said, the problem goes away with the 80m antenna disconnected,
> Yes on the chokes.
> Just as easy to unplug the mouse.? I PRINTED A BEFORE YOU LEAVE THE
> BUILDING CHECKLIST.
>
> On 2020-05-09 08:30, john battin wrote:
>> Sent from Mail [1] for Windows 10
>>
>> -------------------------
>>
>> From: john battin <jbattin@...>
>> Sent: Thursday, May 7, 2020 10:39:01 AM
>> To: Keith Lamonica <w7dxx@...>
>> Subject: RE: RFI
>>
>> Some ideas
>>
>> Is your computer and networking equipment tied to the station ground
>> with a good conductor like a braid?? Is there some kind of earth
>> ground for the station?? Are there ferrite chokes on all the USB
>> inputs to the computer. If you disconnect the 80m antenna does the
>> problem go away?? I use a wireless keyboard and wireless mouse that
>> reduced RFI and they do not seem to be affected by strong RF fields.
>> Many stations have these same issues and have solved them… You
> will
>> too.
>>
>> john
>>
>> Sent from Mail [1] for Windows 10
>>
>> From: Keith Lamonica
>> Sent: Thursday, May 7, 2020 9:15 AM
>> To: keith@...
>> Subject: Re: RFI
>>
>> I moved one leg of the 80m antenna (See from here/to here)? You can
>> see the end stakes. It did not cure the RFI but reduced it.
>>
>> FROM HERE
>>
>> TO HERE
>>
>>
>>
>> Links:
>> ------
>> [1]
>
> From: w7dxx@...
> Sent: Saturday, May 9, 2020 9:50 AM
> Subject: Re: FW: RFI
>
> We are going to redo the house ground tomorrow.
> As I said, the problem goes away with the 80m antenna disconnected,
> Yes on the chokes.
> Just as easy to unplug the mouse.? I PRINTED A BEFORE YOU LEAVE THE
> BUILDING CHECKLIST.
>
> On 2020-05-09 08:30, john battin wrote:
>> Sent from Mail [1] for Windows 10
>>
>> -------------------------
>>
>> From: john battin <jbattin@...>
>> Sent: Thursday, May 7, 2020 10:39:01 AM
>> To: Keith Lamonica <w7dxx@...>
>> Subject: RE: RFI
>>
>> Some ideas
>>
>> Is your computer and networking equipment tied to the station ground
>> with a good conductor like a braid?? Is there some kind of earth
>> ground for the station?? Are there ferrite chokes on all the USB
>> inputs to the computer. If you disconnect the 80m antenna does the
>> problem go away?? I use a wireless keyboard and wireless mouse that
>> reduced RFI and they do not seem to be affected by strong RF fields.
>> Many stations have these same issues and have solved them… You
> will
>> too.
>>
>> john
>>
>> Sent from Mail [1] for Windows 10
>>
>> From: Keith Lamonica
>> Sent: Thursday, May 7, 2020 9:15 AM
>> To: keith@...
>> Subject: Re: RFI
>>
>> I moved one leg of the 80m antenna (See from here/to here)? You can
>> see the end stakes. It did not cure the RFI but reduced it.
>>
>> FROM HERE
>>
>> TO HERE
>>
>>
>>
>> Links:
>> ------
>> [1]
>
>
>
> Links:
> ------
> [1]
?
?
|
Maybe someone can explain to Keith what I am saying.
?
John k9dx
?
Sent from for Windows 10
?
toggle quoted message
Show quoted text
From: john battin
Sent: Saturday, May 9, 2020 12:24 PM
To: w7dxx@...
Subject: RE: FW: RFI
?
OK This is what I see.
?
The 80 m inv vee is 2 wavelengths long on 20 and that puts the high voltage points at the ends and at the middle. When we put coax in the middle, ?high current flow on the outer conductor as the RF tries to find a ground.? It messes things
up not because of radiation (like the mouse problem) but because it creates current ?in anything between it and ground.? This current causes a voltage differential between your pieces of equipment. This is no big deal for the radio and amp but the computer
and networking gear do not like it at all.
That is why I have suggested.
?1.If the station has a ground, connect the coax shield directly to before it goes anywhere else.
2. Put the coax directly on the amplifier…. The theory here is that the current is causing ?a voltage on the coax switch/controller and screwing up the computer/networking.
This is a shot in the dark … but may work.
2. Add a ? wave (30 feet or so) to the feed line… That will insert a high impedance in the feed and reduce the current.
3. I build a choke that inserts a high impedance in the feed. (almost sure to work)
4. We get a 1/1 UNIN and put it in the feed. That is also almost sure to work. I will look on the dx engineering site and see what they have.
?
Last but not least …. Do not do anything to the antenna without looking at the SWR. Do not even try the amp if it is over 3.5/1
?
John
?
?
?
Sent from for Windows 10
?
?
Tied to tower. about 8' lower.
Dipole legs are at 45 degrees. And because of this retrim will be done.
Each antenna has about 8-10 foot of coax coiled.? I will shorten them
On 2020-05-09 09:20, john battin wrote:
> I assume the center of the 80 inv vee is tied close to the tower and
> under the beam.? Question 1? how close?
>
> The idea of getting the 80 out of the plane of the 20m element is good
> … but does that not just change the direction of the problem??
> About how many degrees did you swing the inv vee, and did you swing
> the other leg, or are they no longer in the same plane?
>
> You may need to trim the antenna again ….. measure the SWR
>
> If the answer to #! Is a couple feet … a good idea to try would be
> to lower where the antenna attaches to the tower… 4 or 5 feet will
> make a huge difference.? The change in 80 meter performance will not
> be noticeable…
>
> Another idea to try … increase or decrease the 80m feedline length
> by 16 feet.
>
> Sent from Mail [1] for Windows 10
>
> From: w7dxx@... <w7dxx@...>
> Sent: Saturday, May 9, 2020 9:50:17 AM
> To: john battin <jbattin@...>
> Subject: Re: FW: RFI
>
> We are going to redo the house ground tomorrow.
> As I said, the problem goes away with the 80m antenna disconnected,
> Yes on the chokes.
> Just as easy to unplug the mouse.? I PRINTED A BEFORE YOU LEAVE THE
> BUILDING CHECKLIST.
>
> On 2020-05-09 08:30, john battin wrote:
>> Sent from Mail [1] for Windows 10
>>
>> -------------------------
>>
>> From: john battin <jbattin@...>
>> Sent: Thursday, May 7, 2020 10:39:01 AM
>> To: Keith Lamonica <w7dxx@...>
>> Subject: RE: RFI
>>
>> Some ideas
>>
>> Is your computer and networking equipment tied to the station ground
>> with a good conductor like a braid?? Is there some kind of earth
>> ground for the station?? Are there ferrite chokes on all the USB
>> inputs to the computer. If you disconnect the 80m antenna does the
>> problem go away?? I use a wireless keyboard and wireless mouse that
>> reduced RFI and they do not seem to be affected by strong RF fields.
>> Many stations have these same issues and have solved them… You
> will
>> too.
>>
>> john
>>
>> Sent from Mail [1] for Windows 10
>>
>> From: Keith Lamonica
>> Sent: Thursday, May 7, 2020 9:15 AM
>> To: keith@...
>> Subject: Re: RFI
>>
>> I moved one leg of the 80m antenna (See from here/to here)? You can
>> see the end stakes. It did not cure the RFI but reduced it.
>>
>> FROM HERE
>>
>> TO HERE
>>
>>
>>
>> Links:
>> ------
>> [1]
>
> From: w7dxx@...
> Sent: Saturday, May 9, 2020 9:50 AM
> Subject: Re: FW: RFI
>
> We are going to redo the house ground tomorrow.
> As I said, the problem goes away with the 80m antenna disconnected,
> Yes on the chokes.
> Just as easy to unplug the mouse.? I PRINTED A BEFORE YOU LEAVE THE
> BUILDING CHECKLIST.
>
> On 2020-05-09 08:30, john battin wrote:
>> Sent from Mail [1] for Windows 10
>>
>> -------------------------
>>
>> From: john battin <jbattin@...>
>> Sent: Thursday, May 7, 2020 10:39:01 AM
>> To: Keith Lamonica <w7dxx@...>
>> Subject: RE: RFI
>>
>> Some ideas
>>
>> Is your computer and networking equipment tied to the station ground
>> with a good conductor like a braid?? Is there some kind of earth
>> ground for the station?? Are there ferrite chokes on all the USB
>> inputs to the computer. If you disconnect the 80m antenna does the
>> problem go away?? I use a wireless keyboard and wireless mouse that
>> reduced RFI and they do not seem to be affected by strong RF fields.
>> Many stations have these same issues and have solved them… You
> will
>> too.
>>
>> john
>>
>> Sent from Mail [1] for Windows 10
>>
>> From: Keith Lamonica
>> Sent: Thursday, May 7, 2020 9:15 AM
>> To: keith@...
>> Subject: Re: RFI
>>
>> I moved one leg of the 80m antenna (See from here/to here)? You can
>> see the end stakes. It did not cure the RFI but reduced it.
>>
>> FROM HERE
>>
>> TO HERE
>>
>>
>>
>> Links:
>> ------
>> [1]
>
>
>
> Links:
> ------
> [1]
?
?
|
Re: CQ-M K1ZZI(@W7DXX) SOABCW HP
Nice going Ralph!
For those of you on the W7DXX remote who don't know Ralph (K1ZZI) - he's an avid contester and top-notch CW operator.? He's recently been involved in networking N1MM+ using an Hamachi VPN and integrating N1MM Logger+ into the RCForb software on the remote.? This integration provides for the possibility of a common contest log using N1MM in a Multi-operator environment.? Stay tuned . . .
Welcome aboard Ralph - '73 es gud dxing -- Don N4HH
On Sunday, May 10, 2020, 8:47:44 AM EDT, k1zzi@... <k1zzi@...> wrote:
CQ-M International DX Contest - 2020 ? Call: K1ZZI Operator(s): K1ZZI Station: W7DXX ? Class: SOABCW HP QTH: GA Operating Time (hrs): Remote Operation ? Summary: Band? CW Qs? Ph Qs? Mults --------------------------- ? 160:?????????????????? ???80:?????????????????? ???40:?? 51?????????? ?????? ????16 ?? 20:?? 69??????????? ????? ????19 ?? 15:?????????????????? ???10:?????????????????? --------------------------- Total:? 120???? ???0????? ???35? Total Score = 10,080 ? Club: Georgia Contest Group ? Comments: ? Thanks to Keith W7DXX for using his station. ? ? Posted using 3830 Score Submittal Forms at: http://www.3830scores.com/
|
K4GM-George
