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Re: fc40 tuner
raimo
Hello.
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Look the file I just uploaded. 73s rami, oh6bi --- In YaesuTuner@..., "buddken@..." <buddken@...> wrote:
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New file uploaded to YaesuTuner
Hello,
This email message is a notification to let you know that a file has been uploaded to the Files area of the YaesuTuner group. File : /FC-40 Technical Supplement.pdf Uploaded by : oh6bi <oh6bi@...> Description : FC-40 parts list and schema You can access this file at the URL: To learn more about file sharing for your group, please visit: Regards, oh6bi <oh6bi@...> |
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Re: Yaesu 897D with FC-30 or FC-40 tuner
hi ken here,what you could try is to set the tuner set up on A and set up the 2mt twig on B so the rig dosnt think the swr is wayout and so dosnt shut down the power,might be worth trying,regards ken,m3zkb
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--- In YaesuTuner@..., "ae7vk" <ae7vk@...> wrote:
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Re: Yaesu 897D with FC-30 or FC-40 tuner
what might be the problem is what ever band your in the co-ax idealy needs to be in multiples of half waves so the rig sees the proper impedenceof the antenna,so if the fc30 is on the hf socket if is in range of the tuner it should work,if not add lengths of co-ax until it is in range. hope this helps,ken m3zkb
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--- In YaesuTuner@..., "ae7vk" <ae7vk@...> wrote:
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Re: FC-40 Antenna Post
Open wire (aka ladderline) ... cause you can have high swr on that line
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NEVER use coax for that!!! Dg9bfc Sigi -----Ursprüngliche Nachricht----- |
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Antenna tower cement base
Help!!??!!??
Our small club has to install a crank-up TV tower of about 30 feet and we do not know the manufacturer or any model numbers. We need some advice about how much concrete and rebar to use in the base - how wide, deep, etc. It will be in sandy soil and secure about 8 feet up to an anchored shed building. TIA! Terry de wd4aon@... |
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Yaesu 897D with FC-30 or FC-40 tuner
ae7vk
The truth is that I'm using an MFJ-929 autotuner with my 897D and having a problem that both Yaesu and MFJ are unwilling to solve.
Can someone here tell me exactly how an FC-30 or 40 works with a radio like the 897D? Here's the problem: The 897 has two antenna outputs, one for HF and one for 2M/70cm. The HF goes to the tuner and the 2M goes directly to the 2M antenna. There's a cable that runs from the radio to the tuner for communications. On my radio, once I've set the two menus to enable the tuner, and using the softkeys to enable the tuner, "TUNR" will appear in the radio display showing the tuner is enabled. If I tune the freq outside the legal ham bands the display changes to "tunr" (lower case) which, according to Yaesu tech support, means the tuner is out of range. Fine. Here's the problem: with my setup when I switch to 2M, the display shows "tunr" since of course my tuner nor the FC30/40 work at 2M. But the tuner is NOT in the path so you'd think there'd be no effect, but I guess the radio doesn't "know" the tuner is not in the 2M transmission path. Question: does this cause anyone here any problem when using 2M? My 897D reduces power way down like it's protecting itself. Same with the FC-30/40? If turn off the MFJ, or remove the communications cable, or press the "TUNE" softkey to remove "tunr" from the display (AND cycle the power) then it works fine. In other words once the radio sees there's no tuner, it behaves properly. Anyone have a similar experience with the FC-30/40, or is this some fluke of using an MFJ tuner with the 897D radio? I've posted this on the Yaesu 897 User's Group, but have not received any usable solution. Thanks, Mac, AE7VK |
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Re: New Member with First Post
Try another length (a few feet more or less as you have now)
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It will work I have an fc1000 by yaesu (nearly the same as the fc40) and and some setups you have to shorten or lengthen the wire that tuner finds a match (well documented in owners manual) Dg9bfc Sigi Ps you also can add a small coil at the shack end to get away from low current point ... then also the tuner will find a match -----Ursprüngliche Nachricht----- |
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New Member with First Post
davidrehm40
Just bought a new Yaesu FT-950 and FC-40 Tuner.
Previously, and still in the shack, is my ICOM IC-706MKIIG and AH-4 Tuner. That setup worked just fine. I just wanted a new transceiver. I stayed with a 71 foot single wire but cannot tune on 40 meters with the FC-40. Reading eham.net, it seems that others have had smiilar problems. There may be no one length of wire that will tune all bands. The AH-4 did tune all bands. Sure will appreciate any ideas and suggestions. Very disappointed with the tuner at this point. Thanks, Dave, W5KKC |
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Re: External controller for FC-40
Lou
Well the Pinout from the FC-40 manual with a schematic shows:
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1 - 13.5V (Input) 2 - TX GND (Input) 3 - GND 4 - Data In (Input) 5 - Data Out (Out) 6 - Sense (GND) 7 - Reset (Input) 8 - TX_INH (Out) The Data in Data out pins go to the Serial I/O pins of the MCU, so the data is serial, it is just a matter of what they contain. --- In YaesuTuner@..., "siegfried jackstien" <siegfried.jackstien@...> wrote:
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Re: External controller for FC-40
I have an fc 1000 .... has control head and tuner box ... maybe the protocol
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is the same?!? The control head of the fc1000 needs just 12v and ptt and gives alc back to the rig for tuning with low power .... the frequency data is only needed if you use the memory function (presets) but for tuning it is not needed (so I also could use it with my icom rig *g*) What data is sent over the data bus from control head to tuning box??? I do not know .... but that could not be toooo difficult to find that out Dg9bfc Sigi -----Ursprüngliche Nachricht----- |
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Re: External controller for FC-40
Lou
I am looking for the same information. Has anyone reverse engineered the communications protocol? A web search some people have done it with ICOMs tuners.
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--- In YaesuTuner@..., "de_w1jp" <w1jp@...> wrote:
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Re: extending tuner control cables
Another option is to purchase two cables with a mini 8 DIN connector terminated with an RJ-45 connector. Just run some straight through CAT 5 cable between them to extend to the desired distance. They are available from Pacific Cable . They will also build custom extension cables to your length.
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73, K4PYR --- In YaesuTuner@..., "Ron - KE5RON" <ron.parker@...> wrote:
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Re: extending tuner control cables
I was able to extend my cables with the W4RT pigtails and it worked great. I'm using them at home now on a permanent 43' vertical installation.
One other source I found for the mini DIN connectors and cables is L-COM at www.l-com.com. They have some extension cables in various lengths that I've used with good success with the FC-40. These cables could also be cut in two and spliced into longer cable runs as another option. -- Ron Parker, KE5RON |
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Re: 148 ft wire testing
Try making the wire 145 foot, look at the AH-4 Graphical Length Wire Calculator in the Files Section here in this group.
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Doesn't matter if the tuner is Icom or Yaesu, you still have to avoid 1/2 wavelength for the wire antenna. --- In YaesuTuner@..., "raimo" <oh6bi@...> wrote:
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Re: extending tuner control cables
And with the spare witrs you can parallel the power wires for lower loss
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(depends if needed if you have a long run For me I used just din connectors and I made my own long cable Have an fc1000 Dg9bfc Sigi Ps I use it also with a 1:4 balun on the outside to tune ladderline fed antennas -----Ursprüngliche Nachricht----- |
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Re: extending tuner control cables
Ron - KE5RON
Thanks for posting this idea. That is excellent. I've ordered those pigtails from W4RT and will try something like your idea. I had ordered some 8 pin mini DIN connectors from Cablestogo but I'm not sure I can solder wires on those tiny pins. Those pigtails will solve that problem.
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I'm working on a portable 43' vertical wire antenna for Field Day. I have a fiberglass mast from Max Gain Systems with a 43' wire running to the top of it. I have the FC-40 at the base with the antenna wire on the antenna post and some radials connected to the ground post. It is tuning everything from 10 meters down to 160 but I need a longer control cable since the radio will probably be about 100 feet from the antenna. I'm using the FT-450 with it for Field Day but have also tried my FT-857D. --- In YaesuTuner@..., "Charles Penry" <charles@...> wrote:
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Ron Parker, KR5P
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