[RTTY] Mono band amps

John Barber SKA at bartg.demon.co.uk
Tue Jan 24 17:41:39 EST 2006


Bill,

You can use ordinary 11 pin plug-in relays on HF with no problems. The
type I used for my 4CX1000 amp and auto antenna switcher are 12V coil,
double or triple contacts rated at 10 Amp. I bought a bag of these
relays at a junk sale for next to nothing and they have been working in
the amp for about 15 years!

Cheers,

John GW4SKA

Bill Turner wrote:

> ORIGINAL MESSAGE:
>
> At 11:48 AM 1/22/2006, peter.voelpel wrote:
>
> >I did it similar with my lowband amp, one common input,
> >but 3 outputs, 3x Pi-L and 3 antenna relays.
> >The Pi-Ls sitting on a relay rail connecting the tube output
> >to the band used 160/80/40.
> >The highband amp using the same concept is under construction.
> >
> >73
> >Peter
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> What kind of relays?
>
> Bill, W6WRT
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