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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[VHFcontesting\]\s+Larcan\s+Amp\s+Mod\s+Question\s*$/: 4 ]

Total 4 documents matching your query.

1. [VHFcontesting] Larcan Amp Mod Question (score: 1): Author: <k3sk@buckwalter.co>; Date: Tue, 6 Sep 2022 11:16:48 -0400; I'm in the process of completing the changes needed for my 220MHz amp. I'm using the Larcan 1KW version and on the original DC power plug there is a wire on one of the small pins that goes to Pin 8,; /archives//html/VHFcontesting/2022-09/msg00010.html (7,470 bytes)
2. Re: [VHFcontesting] Larcan Amp Mod Question (score: 1): Author: mike repinski via VHFcontesting <vhfcontesting@contesting.com>; Date: Tue, 6 Sep 2022 15:29:41 +0000 (UTC); On my amp that was converted to operate on 2 meters there is a wire that is attached to the 50 volt rail near the power connector that runs to the swr board. I believe they add protection in case of; /archives//html/VHFcontesting/2022-09/msg00011.html (8,712 bytes)
3. Re: [VHFcontesting] Larcan Amp Mod Question (score: 1): Author: David Olean <k1whs@metrocast.net>; Date: Tue, 6 Sep 2022 11:55:57 -0400; Hi Dave The small wire supplies bias to the FETs. I wrote up a conversion paper on the Larcan, and had a few issues with removing DC from the big FETs when they were not keyed up. I used big FET swit; /archives//html/VHFcontesting/2022-09/msg00012.html (10,062 bytes)
4. Re: [VHFcontesting] Larcan Amp Mod Question (score: 1): Author: Terry Price <terry@directivesystems.com>; Date: Tue, 6 Sep 2022 12:16:10 -0400; Dave's account is spot on. I didn't remove the high current 50V to the FETs during receive, I just removed the bias which is what the protection board seems to do if high SWR is encountered. Since FE; /archives//html/VHFcontesting/2022-09/msg00015.html (11,764 bytes)

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