If his license expired that long ago , his e-mail is not valid
any longer, and his phone is disconned... that doesn't bode well.
If I still lived in Mashachewzits, I'd take a drive up there to
see whether it looks like he still lives there; but my guess is
he's gone, for one reason or another. He wasn't exactly the type
to have a close compadre with whom he would leave "final words"
about whom to let know whether something happened to him; so I'm
not surprised we haven't heard anything whatsoever from or about
him. Somebody with access to the local newspapers might check the
obituaries, going all the way back to before the start of the
pandemic.
Steve, K0XP
On 12/20/2023 11:33 AM, Louis
Parascondola via groups.io wrote:
Carl hadn¡¯t been in on the various groups since before Covid.
?Reports say he¡¯s ok but probably got tired of fighting on the
groups and is pounding sand somewhere else.
On
Wednesday, December 20, 2023, 12:10 PM, Don Roden
<donroden@...> wrote:
Carl's Extra License expired last October.?
Don W4DNR
On 2023-12-20 8:12 am, NI5L
wrote:
Good morning, all. I
recently acquired a converted 6-meter amp that is named
the SB-206. It was converted by KM1H
--
See my QRZ.com page at
|
OK. Thanks for the replies, guys. I am getting 600 watts out at 18 watts of drive with the load backed off CCW ~25 watts from peak (per the instructions). The grid current is at 500 mA. The plate current is 650 mA.
Are these acceptable numbers to help the tubes live longer???
Thanks for any input.
Warren / NI5L
|
Carl hadn¡¯t been in on the various groups since before Covid. ?Reports say he¡¯s ok but probably got tired of fighting on the groups and is pounding sand somewhere else.
On Wednesday, December 20, 2023, 12:10 PM, Don Roden <donroden@...> wrote:
Carl's Extra License expired last October.?
Don W4DNR
On 2023-12-20 8:12 am, NI5L wrote:
Good morning, all. I recently acquired a converted 6-meter amp that is named the SB-206. It was converted by KM1H
|
Can anybody with a two tube 2500 Commander ( those with grid trip protection) tell me at what grid current their amp trips out at? ?I have an older model in for work and it doesn¡¯t have a grid trip. ?I put a trip circuit in it and wanting to adjust the trip point to factory specs. ?Schematic had a notation 65ma max., but that might be for a single tube. ?If anyone can let me know what their¡¯ sis set to I¡¯d like some input. ?Thanks, Lou
|
Carl's Extra License expired last October.?
Don W4DNR
toggle quoted message
Show quoted text
On 2023-12-20 8:12 am, NI5L wrote:
Good morning, all. I recently acquired a converted 6-meter amp that is named the SB-206. It was converted by KM1H
|
Good morning, all. I recently acquired a converted 6-meter amp that is named the SB-206. It was converted by KM1H in 2006 from an SB-200 and it actually works very well. I have been very carefully tuning it with the max output method, which is the only way I can do it. The "manual" is a single sheet of paper with minimal instruction. I have tried to contact the builder, but his email bounces and his phone is disconnected. Has anyone on this reflector had one of these? If so, I would like to know how you tune your amp properly. I am trying t avoid killing it with improper tuning. 73 Warren / NI5L 
|
Re: Ten-Tec Centurion Parts Needed
Hi Lou: ? I resent the message I had previously sent you directly.? I would prefer to discuss this off list. ? 73, ? Steve ? ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Louis Parascondola via groups.io
Sent: Tuesday, December 19, 2023 9:16 PM
To: [email protected]
Subject: Re: [ham-amplifiers] Ten-Tec Centurion Parts Needed? Steve, I don¡¯t remember getting any email. ?If you want?to send me the capacitor I¡¯ll try to rebuild it for you. ?Lou
|
Re: Ten-Tec Centurion Parts Needed
Steve, I don¡¯t remember getting any email. ?If you want?to send me the capacitor I¡¯ll try to rebuild it for you. ?Lou
On Tuesday, December 19, 2023, 8:02 PM, Omni <selcor@...> wrote: Hi Lou: ? I sent a reply to this message on Sunday December 10th to your direct email address, but did not hear back from you. ?Can you still help with plates for the Centurion Plate Tuning cap? ? 73, ? Steve ? ? ? ? TenTec buit?their own variable capacitors. ?So their plates are unlike any others. ?I have some plates and if you want you?ship me the cap I¡¯ll rebuild it for you. ?I should have a few plates left. ?Although it¡¯s a handsome looking amp it¡¯s certainly not the best performer in its class. ?It lacks inductance on 160 and the tank isn¡¯t so hood on 15 and 10. ?
?
|
Re: Ten-Tec Centurion Parts Needed
Hi Lou: ? I sent a reply to this message on Sunday December 10th to your direct email address, but did not hear back from you. ?Can you still help with plates for the Centurion Plate Tuning cap? ? 73, ? Steve ? ? ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Louis Parascondola via groups.io
Sent: Sunday, December 10, 2023 12:10 AM
To: [email protected]
Subject: Re: [ham-amplifiers] Ten-Tec Centurion Parts Needed? TenTec buit?their own variable capacitors. ?So their plates are unlike any others. ?I have some plates and if you want you?ship me the cap I¡¯ll rebuild it for you. ?I should have a few plates left. ?Although it¡¯s a handsome looking amp it¡¯s certainly not the best performer in its class. ?It lacks inductance on 160 and the tank isn¡¯t so hood on 15 and 10. ?
?
|
I have a bad roller wheel on a 3K roller inductor. ?Anybody have a replacement or know of a replacement? Lou
|
Thanks everyone. If anyone has replaced one with a more powerful one, please fill me in on what you got etc. Bob W4JFA?
FWIW, CTR Engineering probably has the right one for the job.? Just
say'in
Andy? K9ATX
On 12/19/2023 4:29 PM, Alek Petkovic
via wrote:
Yes or maybe just get a new fan. They are a not a rare item.
I concur with the others. You should feel a good steady stream
of air out the side and whilst it is not loud, you can
definitely hear it running.
73, Alek VK6APK
On 20/12/2023 6:08 am, mike repinski
via wrote:
On Tuesday, December 19, 2023 at 04:59:54 PM EST,
Louis Parascondola via <gudguyham@...>
wrote:
It runs at the same speed
On
Tuesday, December 19, 2023, 4:16 PM, Bob <W4JFABob@...>
wrote:
Does the fan run at the same
speed all the time or is the speed
thermostatically?controlled?
Bob? W4JFA
On
Tue, Dec 19, 2023 at 4:13?PM Louis
Parascondola via
<Gudguyham= [email protected]>
wrote:
You should be able to feel a steady
stream of air coming out the side.
On
Tuesday, December 19, 2023, 4:07 PM, Bob
<W4JFABob@...>
wrote:
Hi all,
I'll condense this. A friend
just got this AL-80B that had?at
one time melted a filament tube
pin. The tube socket, the type
that the socket is on a circuit
board, was burned pretty badly. He
got a new ceramic socket. I did
what I needed to do to install it
including getting the grids
grounded, socket properly mounted
etc.
Amp works fine now but I
noticed the cooling fan is
basically silent and seems to
barely spin. When holding my
hand?on the output?vent I barely
feel any air movement. I've never
worked on one of these 80B's
before so I don't know what's
normal, however I feel this isn't
moving nearly enuff air.
I know this is hard to put into
words?but can anyone give me some
kind of idea of how much air can
be felt blowing out of the vent?
I know the fan worked normally
at one time because the inside of
this amp was full of dust etc!
Actually it was disgusting! It
took me quite a while to get it
clean.
Thanks all.
Bob? W4JFA
--
"Where the Old Soo crossed the New Soo"
Duplainville, Wisconsin
Web page:
Youtube Channel:
|
FWIW, CTR Engineering probably has the right one for the job.? Just
say'in
Andy? K9ATX
On 12/19/2023 4:29 PM, Alek Petkovic
via groups.io wrote:
Yes or maybe just get a new fan. They are a not a rare item.
I concur with the others. You should feel a good steady stream
of air out the side and whilst it is not loud, you can
definitely hear it running.
73, Alek VK6APK
On 20/12/2023 6:08 am, mike repinski
via groups.io wrote:
On Tuesday, December 19, 2023 at 04:59:54 PM EST,
Louis Parascondola via groups.io <gudguyham@...>
wrote:
It runs at the same speed
On
Tuesday, December 19, 2023, 4:16 PM, Bob <W4JFABob@...>
wrote:
Does the fan run at the same
speed all the time or is the speed
thermostatically?controlled?
Bob? W4JFA
On
Tue, Dec 19, 2023 at 4:13?PM Louis
Parascondola via
<Gudguyham= [email protected]>
wrote:
You should be able to feel a steady
stream of air coming out the side.
On
Tuesday, December 19, 2023, 4:07 PM, Bob
<W4JFABob@...>
wrote:
Hi all,
I'll condense this. A friend
just got this AL-80B that had?at
one time melted a filament tube
pin. The tube socket, the type
that the socket is on a circuit
board, was burned pretty badly. He
got a new ceramic socket. I did
what I needed to do to install it
including getting the grids
grounded, socket properly mounted
etc.
Amp works fine now but I
noticed the cooling fan is
basically silent and seems to
barely spin. When holding my
hand?on the output?vent I barely
feel any air movement. I've never
worked on one of these 80B's
before so I don't know what's
normal, however I feel this isn't
moving nearly enuff air.
I know this is hard to put into
words?but can anyone give me some
kind of idea of how much air can
be felt blowing out of the vent?
I know the fan worked normally
at one time because the inside of
this amp was full of dust etc!
Actually it was disgusting! It
took me quite a while to get it
clean.
Thanks all.
Bob? W4JFA
--
"Where the Old Soo crossed the New Soo"
Duplainville, Wisconsin
Web page:
Youtube Channel:
|
Yes or maybe just get a new fan. They are a not a rare item.
I concur with the others. You should feel a good steady stream of
air out the side and whilst it is not loud, you can definitely
hear it running.
73, Alek VK6APK
On 20/12/2023 6:08 am, mike repinski
via groups.io wrote:
toggle quoted message
Show quoted text
On Tuesday, December 19, 2023 at 04:59:54 PM EST, Louis
Parascondola via groups.io
<gudguyham@...> wrote:
It runs at the same speed
On
Tuesday, December 19, 2023, 4:16 PM, Bob
<W4JFABob@...> wrote:
Does the fan run at the same speed
all the time or is the speed
thermostatically?controlled?
Bob? W4JFA
On
Tue, Dec 19, 2023 at 4:13?PM Louis
Parascondola via
<Gudguyham= [email protected]>
wrote:
You should be able to feel a steady stream
of air coming out the side.
On
Tuesday, December 19, 2023, 4:07 PM, Bob
<W4JFABob@...>
wrote:
Hi all,
I'll condense this. A friend just
got this AL-80B that had?at one time
melted a filament tube pin. The tube
socket, the type that the socket is
on a circuit board, was burned
pretty badly. He got a new ceramic
socket. I did what I needed to do to
install it including getting the
grids grounded, socket properly
mounted etc.
Amp works fine now but I noticed
the cooling fan is basically silent
and seems to barely spin. When
holding my hand?on the output?vent I
barely feel any air movement. I've
never worked on one of these 80B's
before so I don't know what's
normal, however I feel this isn't
moving nearly enuff air.
I know this is hard to put into
words?but can anyone give me some
kind of idea of how much air can be
felt blowing out of the vent?
I know the fan worked normally at
one time because the inside of this
amp was full of dust etc! Actually
it was disgusting! It took me quite
a while to get it clean.
Thanks all.
Bob? W4JFA
|
On Tuesday, December 19, 2023 at 04:59:54 PM EST, Louis Parascondola via groups.io <gudguyham@...> wrote:
It runs at the same speed
On Tuesday, December 19, 2023, 4:16 PM, Bob <W4JFABob@...> wrote: Does the fan run at the same speed all the time or is the speed thermostatically?controlled? Bob? W4JFA On Tue, Dec 19, 2023 at 4:13?PM Louis Parascondola via <Gudguyham= [email protected]> wrote:
You should be able to feel a steady stream of air coming out the side.
On Tuesday, December 19, 2023, 4:07 PM, Bob <W4JFABob@...> wrote: Hi all,
I'll condense this. A friend just got this AL-80B that had?at one time melted a filament tube pin. The tube socket, the type that the socket is on a circuit board, was burned pretty badly. He got a new ceramic socket. I did what I needed to do to install it including getting the grids grounded, socket properly mounted etc.
Amp works fine now but I noticed the cooling fan is basically silent and seems to barely spin. When holding my hand?on the output?vent I barely feel any air movement. I've never worked on one of these 80B's before so I don't know what's normal, however I feel this isn't moving nearly enuff air.
I know this is hard to put into words?but can anyone give me some kind of idea of how much air can be felt blowing out of the vent?
I know the fan worked normally at one time because the inside of this amp was full of dust etc! Actually it was disgusting! It took me quite a while to get it clean.
Thanks all.
Bob? W4JFA
|
It runs at the same speed
On Tuesday, December 19, 2023, 4:16 PM, Bob <W4JFABob@...> wrote: Does the fan run at the same speed all the time or is the speed thermostatically?controlled? Bob? W4JFA On Tue, Dec 19, 2023 at 4:13?PM Louis Parascondola via <Gudguyham= [email protected]> wrote:
You should be able to feel a steady stream of air coming out the side.
On Tuesday, December 19, 2023, 4:07 PM, Bob <W4JFABob@...> wrote: Hi all,
I'll condense this. A friend just got this AL-80B that had?at one time melted a filament tube pin. The tube socket, the type that the socket is on a circuit board, was burned pretty badly. He got a new ceramic socket. I did what I needed to do to install it including getting the grids grounded, socket properly mounted etc.
Amp works fine now but I noticed the cooling fan is basically silent and seems to barely spin. When holding my hand?on the output?vent I barely feel any air movement. I've never worked on one of these 80B's before so I don't know what's normal, however I feel this isn't moving nearly enuff air.
I know this is hard to put into words?but can anyone give me some kind of idea of how much air can be felt blowing out of the vent?
I know the fan worked normally at one time because the inside of this amp was full of dust etc! Actually it was disgusting! It took me quite a while to get it clean.
Thanks all.
Bob? W4JFA
|
Does the fan run at the same speed all the time or is the speed thermostatically?controlled? Bob? W4JFA
On Tue, Dec 19, 2023 at 4:13?PM Louis Parascondola via <Gudguyham= [email protected]> wrote:
You should be able to feel a steady stream of air coming out the side.
On Tuesday, December 19, 2023, 4:07 PM, Bob <W4JFABob@...> wrote: Hi all,
I'll condense this. A friend just got this AL-80B that had?at one time melted a filament tube pin. The tube socket, the type that the socket is on a circuit board, was burned pretty badly. He got a new ceramic socket. I did what I needed to do to install it including getting the grids grounded, socket properly mounted etc.
Amp works fine now but I noticed the cooling fan is basically silent and seems to barely spin. When holding my hand?on the output?vent I barely feel any air movement. I've never worked on one of these 80B's before so I don't know what's normal, however I feel this isn't moving nearly enuff air.
I know this is hard to put into words?but can anyone give me some kind of idea of how much air can be felt blowing out of the vent?
I know the fan worked normally at one time because the inside of this amp was full of dust etc! Actually it was disgusting! It took me quite a while to get it clean.
Thanks all.
Bob? W4JFA
|
You should be able to feel a steady stream of air coming out the side.
On Tuesday, December 19, 2023, 4:07 PM, Bob <W4JFABob@...> wrote: Hi all,
I'll condense this. A friend just got this AL-80B that had?at one time melted a filament tube pin. The tube socket, the type that the socket is on a circuit board, was burned pretty badly. He got a new ceramic socket. I did what I needed to do to install it including getting the grids grounded, socket properly mounted etc.
Amp works fine now but I noticed the cooling fan is basically silent and seems to barely spin. When holding my hand?on the output?vent I barely feel any air movement. I've never worked on one of these 80B's before so I don't know what's normal, however I feel this isn't moving nearly enuff air.
I know this is hard to put into words?but can anyone give me some kind of idea of how much air can be felt blowing out of the vent?
I know the fan worked normally at one time because the inside of this amp was full of dust etc! Actually it was disgusting! It took me quite a while to get it clean.
Thanks all.
Bob? W4JFA
|
Hi all,
I'll condense this. A friend just got this AL-80B that had?at one time melted a filament tube pin. The tube socket, the type that the socket is on a circuit board, was burned pretty badly. He got a new ceramic socket. I did what I needed to do to install it including getting the grids grounded, socket properly mounted etc.
Amp works fine now but I noticed the cooling fan is basically silent and seems to barely spin. When holding my hand?on the output?vent I barely feel any air movement. I've never worked on one of these 80B's before so I don't know what's normal, however I feel this isn't moving nearly enuff air.
I know this is hard to put into words?but can anyone give me some kind of idea of how much air can be felt blowing out of the vent?
I know the fan worked normally at one time because the inside of this amp was full of dust etc! Actually it was disgusting! It took me quite a while to get it clean.
Thanks all.
Bob? W4JFA
|
There is a one year on Penta through Penta. ?
On Monday, December 18, 2023, 12:34 PM, Alan - W5ARM <W5ARM.mail@...> wrote: On Sun, Dec 10, 2023 at 02:46 PM, Dave wrote:
Hello Group, I could use your help!
Looking to pick up a 3-500ZG replacement for my AL-80B.? My choices are:
RF Parts Company: 3-500ZG (6-month warranty). 250$ (China)
DX Engineering: Penta Labs RF Vacuum Tube 3-500ZG (no warranty listed). 300$ (assume China?)
DX Engineering:?Ameritron 3-500Z Replacement Power Tube (All products manufactured by Ameritron have a one-year limited warranty) 360$ (assume China?).
Both vendors have always been reliable for me so my question:
Is the Ameritron tube worth the additional $$ or is it branding?
Is the Penta Tube?worth the additional $$
What would be the best replacement?
(sorry for writing a novel)
Thanks in advance!
73
K5AKM - Dave
Howdy Dave,
Just as an FYI, Henry Radio (yes, they still sell stuff...) has new "Greenstone" 3-500C tubes for sale. They are Chinese (of course), but seem okay, work well, and are "guaranteed"...
I purchased a couple of these a long while back, and they are still running strong. I've run the pair in both my Drake L-4B (that's what they're in now), as well as my Henry 3-KA. They work great, and the price was (I thought) quite reasonable.
Anyway, just another option to consider.
73,
~Alan
W5ARM
|
Re: Traveling Wave Tube Amplifier
|
Bob