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Re: Tuned input
I see a quantity on Ebay but they are a small fortune. Not what I expected.
By mike repinski · #39943 ·
Re: Tuned input
Arco was the big name in variable caps at one time. Not sure if they are still around. I wonder if there are any articles on that board? I see the original designer has passed. Mike
By mike repinski · #39942 ·
Re: Tuned input
Mike.? I ordered the board from Fred at FAR.? He did not have relays or the trimmers. I found the relays and have ordered them. I can't find the trimmers.? I need eight 30-300PF and two 100 to
By W7WRX · #39941 ·
Re: AL-80B fan
You guy's guess was about right! No beer but "fireball"! Bob W4JFA
By Bob · #39940 ·
Re: Tuned input
I have tried this in the past. It's a huge KLUDGE and would not recommend it. That tuner is going to try to tune while you are transmitting, You're constantly showing your radio a bad match every time
By W7WRX · #39939 ·
Re: Tuned input
Yes, you would mount the tuner inside your amplifier somewhere; the output of the input network should be close to the tube. Controls for the tuner, and potentially the display, would be on the front
By Brian Moran · #39938 ·
Re: Tuned input
I guess I don't understand. Your suggesting to install this tuner inside the RF deck? How will you control it? How will you switch it to difference bands?How will you prevent it from tuning as you
By W7WRX · #39937 ·
Re: Tuned input
Here's a late entry to your options: Get one of the ATU kits that are readily available online, running the software from N7DDC.? Modify the HW, and/or the SW. But you have all of the pieces you need
By Brian Moran · #39936 ·
Re: Tuned input
I really like this option: - code is available - https://github.com/Dfinitski/N7DDC-ATU-100-mini-and-extended-boards - parts kits are orderable from a number of sources, including amazon (get it in
By Brian Moran · #39935 ·
Re: Tuned input
Thank you so much Mike! I will get a board ordered up! C ________________________________ Sent: Saturday, December 30, 2023 7:52 AM To: [email protected] <[email protected]> Subject: Re:
By W7WRX · #39934 ·
Re: Tuned input
Far circuit boards makes the circuit board for a tuned input. It uses relays and comes in 6 band thru 8 band modules. Check with them. It looks like W4ZT was the designer. Mike
By mike repinski · #39933 ·
Re: Tuned input
You don't. They don't make it anymore. They only sell the regular auto tuner. It's a major kludge. Hence me wanting to install a real tuned input. C
By W7WRX · #39932 ·
Re: Tuned input
That's the one. Are they still made?
By mike repinski · #39931 ·
Re: AL80-B tuned input
I forgot to mention that the capacitor values quoted in the user manual bear no resmblance to the ones mounted on the board. I bought a complete new board from Ameritron and same thing. Completely
By Alek Petkovic · #39930 ·
Re: Tuned input
I wonder if one of these cheap china atu's could be made to work.
By desmond auld GI0UTE · #39929 ·
Re: Tuned input
Dang... they actually designed it so screwed if you do, screwed if you don't...? 8-/ Actually, that makes sense since these aren't latching relays. So instead, you somehow have to whet it's desire to
By Steve · #39928 ·
Re: Tuned input
They actually made that unit to be powered up. If you turn off power, relays unlatch and radio sees no load and or super high swr. If ya want to blow your radio up follow Steve's advice :) C
By W7WRX · #39927 ·
Re: AL80-B tuned input
Here's the secret for 30m. 20m and 30m share the same slug and they are far apart in frequency. The advice I got from Ameritron is that you can tune for 20m OR tune for 30m. You can't have both. Make
By Alek Petkovic · #39926 ·
Re: AL-80B fan
Including the beer, count on four. If he only has coffee, it'll probly be just two? 8-) Steve, K0XP -- See my QRZ.com page at *https://www.qrz.com/db/K0XP*
By Steve · #39925 ·
Re: Tuned input
W7RY?? Dunno whether he made such animals, but he did provide other animals for our zoos? 8-D Steve, K0XP
By Steve · #39924 ·