Mute on SB-301

[CHRISTOPHER W. (Chris) BOONE]

The MUTE in on the SB303 requires a ground to mute if I recall
correctly...(sold my Heath Twins last year so this is from memory!)
Should be able to find a ground from the DX60 or antenna relay (in TX
mode)to ground the 303 MUTE (isolated contacts..make sure there is NO
voltage on the plug BEFORE plugging it into the 303!)
Easy way to make sure the MUTE is low going is plug a phono plug
into the MUTE jack with a cable going to open stripped leads..
shorting the leads together should mute the rcvr...

Chris
WB5ITT

Gareth Gammon wrote:

> Does anyone know how to use the mute jack on the SB-301 other than
> connecting it to the SB-401, (which will be coming later, in the fall!!)
> I am using the rx with a DX-60A and manual TR but would rather just
> throw one switch for antenna changeover instead of putting the rx into
> standby. It works, but..... I have a manual but it just mentions the
> 401.

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