[Boatanchors] Hallicrafter HT 32 A PTT problem

[revcom at wbsnet.org]

Frank..

Not sure on this, too many years ago.  Doesn't  the HT-32 use an
amplifier tube to key relay?  Both in PTT and VOX.  Can't find
manual right now but had an HT-32 about 40 years ago. (still
have one but not hooked up)  Simular to Collins circuit, no direct
connection to relay from Mic PTT.  Weak tube/poor capacitors, etc.
Am I right?

Rod
K0EQH



 I have a HT 32A that stopped TX with PTT and would not trip in MOX.
> When using a Shure 444 I need to turn the VOX adjustment all the way
> up to be able to use PTT ( I do not use VOX mode). When I use a D 104
> I need to turn the VOX adjustment down or the TX trips as soon as the
> mic plug gets near the jack. All just stopped working.
>
> I checked the switch assembly and cleaned all contacts of all the
> switch assemblies. They all looked fine.I swapped V17 - 12AT7 - with
> two other tubes and the condition remained ( by this time I was
> getting sporadic PTT contact). I cleaned the contacts on the relay.
> The relay made a weak - half hearted contact at times and no TX but
> when it made contact it hit hard. I wiped all the tube pins and a dab
> of Deox and put tubes in and out several times. Still sporadic TX on
> PTT but it was getteing better. There were two plug assemblies with
> wiring that all pins were
> cleaned and still poor PTT TX.
>
> I sprayed the VOX delay and adjustment pots and worked them and the
> MOX worked normal and the PTT seemed to work normal and strong contact
> with the Shure 444. Checked for poor grounds but the inside of the rig
> is clean.
>
> Put the chasis back in the case hooked it up and PTT and MOX started
> to fail again. Turned VOX adjustment up and Shure 444 did TX but had
> misses. Replaced it with the D104 and PTT works fine but MOX needs to
> have operation switch to CW and then to MOX to go to TX to tune. It
> does put a good signal out but I know the PTT/MOX is not working to specs.
>
> Any similar problem or advice from Halli land??
> Thank you
>
>
> __._,_.___
> Frank AA4FS
> Palm Coast, Fl
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