David Craig wrote:
> This is my first time trying vacuum relays & it
> "appears" I have capacititive reactance, I think? With just
> RG214 to the relays & RF in/out connectors, I get a whopping 3 to
> 1 SWR with amp in bypass.
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 contacts (amp
bypass) and short sections of RG-142 from the type N sockets to the
relay common contacts. My relays are in a shielded box attached to
the back of my amp. I'm seeing about 1.7 SWR from this arrangement
with the amp in bypass.
I haven't yet found the ambition to go in there and play around to
see if I can improve on that, but it's on my to do list.
73,
Paul N1BUG
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|