G'day Vic.
The Matsushita/Panasonic relay that Rich Measures used in his QSK
circuit, published at somis.org, 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.
VK6APK
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:
<https://www.mouser.co.il/datasheet/2/418/NG_SS_108-98005_L-1019204.pdf>
But maybe there's a better choice? I'm overwhelmed by the number and
varieties of relays in the catalog.
--
From sunny Binningup
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