[Milsurplus] OT: Coaxial Relay ratings

W2HX w2hx at w2hx.com
Fri Oct 17 14:43:23 EDT 2014


Both side of the relay should be close to 50 ohms. The transmitter will be 50 ohms nominal and the antenna coupler should get pretty close. Yes, HF for everything. One antenna tuner will be the harris RF-382A for 100-300W radios and the other will be Sunair GCU-1935 (for KW operating).  The RF-382 should be a quick project, but the GCU-1935 will take some time.  

73 Eugene W2HX


-----Original Message-----
From: mstangelo at comcast.net [mailto:mstangelo at comcast.net] 
Sent: Friday, October 17, 2014 2:24 PM
To: W2HX
Cc: Nick England; Bob Camp; milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] OT: Coaxial Relay ratings

What is the expected worst case SWR from the other two antennas? Will everything operate HF?

Out od curiousity, what antenna tuner will you be using?

Mike N2MS
----- Original Message -----
From: W2HX <w2hx at w2hx.com>
To: Nick England <navy.radio at gmail.com>, Bob Camp <kb8tq at n1k.org>
Cc: milsurplus at mailman.qth.net
Sent: Fri, 17 Oct 2014 12:19:38 -0000 (UTC)
Subject: Re: [Milsurplus] OT: Coaxial Relay ratings

Ok thanks, everyone. So I plan to switch before an antenna coupler (tuner) so the relay should see nearly 50 ohms in each direction (if the coupler is doing its job right).  In this case, do you think this 300W at 3GHz relay will suffice?



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