greetings, Dan --
>
>Hi Martin,
>
>Your rugged 30 year old HENRY 2K-3 could benefit from a relay upgrade by
>using either:
>RJ-1 or HC-1 vacuum relay which will need 26 VDC to switch
? Not if you have a modern transceiver -- which typically switch in 5mS
to 8mS. If that be the case, you also need a speedup circuit and more
volts to make the grade.
> and one of our
>current guardian relays (to switch input and bias) which is a short throw
>DPDT (<10ms switch time) which needs 12 VDC.
? which is not quick enough to prevent hotswitching with most of the
modern radios.
>OR two Guardian relays jumpering the DPDT contacts on the output relay used
>as an SPDT. The two guardian method is used in the 3K Classic X MKII. The
>Vacuum (RJ-6)
? I see no RJ-6 in the Jennings Catalog. I see an RE 6B on page 16. It
is rated at 25mS.
> and guardian are used in the 3K Premier as examples.
>
>Before the anti-HENRY types poo-poo this idea, forget it.
? and ignore the man behind the curtain
>This has been working successfully in current production amps for 13 years
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