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Re: [Amps] Input relay for QSK amp

To: "'Victor Rosenthal 4X6GP'" <>, "'Amps reflector'" <>
Subject: Re: [Amps] Input relay for QSK amp
From: "Paul Christensen" <>
Date: Tue, 4 Dec 2018 08:35:56 -0500
List-post: <>

Look at the Aromat/Matsushita RSD-12V.  It's a DPDT RF reed relay that's
meant for the job and easily handles 100W.  It's also exceptionally quiet
and fast.  There are several on eBay.  If that doesn't work for you, I can
send you one.

Paul, W9AC

-----Original Message-----
From: Amps <> On Behalf Of Victor Rosenthal 4X6GP
Sent: Tuesday, December 4, 2018 5:21 AM
To: Amps reflector <>
Subject: [Amps] Input relay for QSK amp

I'm trying to choose a relay to use as the input relay in a QSK amp.
I have been very satisfied with the Jennings RJ1-A as an output relay. 
The input relay in this circuit needs to be DPDT, or I'd just use two
similar vacuum relays.

Here are my needs:

1. DPDT.
2. 12 or 24v coil.
3. Operate/release time, including bounce <= 4 ms. Faster is better.
4. Should carry 100w RF in 50 ohm system. Not expected to make/break live
5. Must have low resistance for low-level signals (receive path).
6. Must have long life >= (10 x 10**6 operations) 7. Must not be insanely
expensive, and available from Mouser or RS.

I found this relay:
But maybe there's a better choice? I'm overwhelmed by the number and
varieties of relays in the catalog.
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
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