[HBR] Help needed for Information on a transceiver.

[Xnke]

Fire it up on 6v, verify receive works, key into a dummy load, and measure
voltages at what you consider key points in the circuit. I would measure
the following:

B+ at filter output
Grid bias at all grids
Cathode voltage
Final cathode voltage under 55ma load
Final plate voltage at 55ma load

And then swap your filament transformer and see what you need to do to get
those voltages back. If you can get within 5%, you're as close as makes no
difference and can call it a job well done!

After that, I would start measuring IF frequency response, and get a stable
BFO going. At that point CW/SSB reception should be possible. Next step is
getting the final amp biased into class AB with a front panel switch. From
there, an SSB generator could be outboarded for testing.

Just like eating an elephant.

KI4YAN, Jake

On Jan 3, 2018 5:29 PM, "James Lawrie" <lawriejk at gmail.com> wrote:

Hello,

Yes they seem to be now located in both Houston and Galveston. No I’m
guessing made somewhere in early mid 50s and it’s low band AM 4 large
Bakelite type crystals are in the 2-3 MHz region from what I can tell. It
uses two 6L6Gs in the final so guessing maybe 20 or so watt.

I plan to switch over to probably 160-40 Meter, and trying to make one
SSB/CW. Counting the case and parts well worth the money. I’ve ordered a
6.3v 5 amp Filament transformer so I can pull the 6v vibrator and try to
run from A/C, but I’m back to needing schematic or service manual.

Thanks,

James Lawrie

> On Jan 2, 2018, at 23:06, Vintage Radio Repair <radio at daileyservices.com>
wrote:
>
> http://www.vesselrepair.com/
>
> Bludsworth Marine is a vessel salvage and repair facility - is the radio
VHF?  Early marine radio gear operated from about 2 mcs, up to about 6 mcs,
but later gear now operates in the 152 mHz area.
>
> Tom - WØEAJ
>
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