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1. [Amps] Bypass SWR RJ1As (score: 1): Author: "David Craig" <davidhcraig@verizon.net>; Date: Sat, 17 Jan 2009 01:49:47 -0500; Hello All, Looking for input/advice regarding "tuning" the relays of my latest homebrew GS35b 50 MHz amp. Using a pair of RJ1As (used but hipotted good, I presume MRI pulls) for RF switching. In othe; /archives//html/Amps/2009-01/msg00136.html (8,298 bytes)
2. Re: [Amps] Bypass SWR RJ1As (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Sat, 17 Jan 2009 08:53:07 +0000; If adding shunt C reduces the VSWR, then the relays are adding inductance in the line. When you have series L and shunt C you get a network that changes the impedance. If the inductance is low enough; /archives//html/Amps/2009-01/msg00137.html (7,040 bytes)
3. Re: [Amps] Bypass SWR RJ1As (score: 1): Author: Paul Kelley N1BUG <paul.kelley.n1bug@gmail.com>; Date: Sat, 17 Jan 2009 07:40:39 -0500; Hi Dave, Just as a data point, I'm using the silicone encapsulated version of the RJ1A (RJ1A-26N969) in my 50 MHz amp. I have about 1" of 1/4" wide thin (.003") brass strip connecting the relay NC co; /archives//html/Amps/2009-01/msg00138.html (7,555 bytes)
4. Re: [Amps] Bypass SWR RJ1As (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Sat, 17 Jan 2009 09:21:49 -0500; Simply trying a few SM's is a shotgun approach. Start off with a mica compression trimmer to ground and adjust for the best match which should be very close to 1.1:1. Then measure the value and subst; /archives//html/Amps/2009-01/msg00139.html (10,336 bytes)
5. [Amps] Bypass SWR RJ1As (score: 1): Author: "David Craig" <davidhcraig@verizon.net>; Date: Sat, 17 Jan 2009 13:01:40 -0500; Hello All & thanks for the replies. I really screwed up last night when I wrote my question- I am using RG142 for all the amp internal lines including bypass, not RG214 (duh). Guess I can't think & t; /archives//html/Amps/2009-01/msg00143.html (7,151 bytes)

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