[Top] [All Lists]

Re: [Amps] Input relay for QSK amp

To: AMPS <>
Subject: Re: [Amps] Input relay for QSK amp
From: Alek Petkovic <>
Date: Wed, 05 Dec 2018 06:03:37 +0800
List-post: <>
G'day Vic.

The Matsushita/Panasonic relay that Rich Measures used in his QSK circuit, published at, is still available on Ebay. I bought 10 of them a couple of years ago

Otherwise, Jim, W7RY, uses a small relay in his QSK kit. He laso deals on Ebay.

73, Alek.

On 4/12/2018 6:21 PM, Victor Rosenthal 4X6GP wrote:
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 circuit.
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.

From sunny Binningup

Family Businesses:
SP Electrical.
The Velvet Fox.
Smart Design Electrical.
Perth Interiors.

Amps mailing list

<Prev in Thread] Current Thread [Next in Thread>