[MRCA] [MMRCG] GRC-19 on the air

[Jason WA6BBQ]

Very good Scott, thanks!

On Sat, Jan 3, 2026 at 12:13 <scottjohnson1 at cox.net> wrote:

> Jason-
>
> Assuming the error is uniform up and down the band, it is as simple as
> loosening the coupler on the PTO and moving it in until the display
> coincides with the frequency.  Ensure all the clamps are tight when you are
> done.
>
>
>
> Regards,
>
> Scott W7SVJ
>
>
>
> *From:* MMRCG at groups.io <MMRCG at groups.io> *On Behalf Of *Jason Sogolow
> via groups.io
> *Sent:* Saturday, January 3, 2026 12:58 PM
> *To:* mmrcg at groups.io; mrca at mailman.qth.net; mrcg-west at groups.io
> *Subject:* [MMRCG] GRC-19 on the air
>
>
>
> Finally lugged the GRC-19 set I got from the estate at the 2024 MRCG West
> meet up onto a bench… ibuprofen. Had successfully tested the two R-392’s
> separately last weekend.
>
>
>
> Opened the. T-195 up, had a look, did some cursory cleaning and dusting
> despite being pretty clean in there. Mainly looking for things that might
> go sizzle or bang.
>
>
>
> Then concocted  power source. I have an unknown and untested PP4763, but
> if I believe the ratings, trying to run it off 120VAC would make my home’s
> feeble electrical system go sizzle and bang, unless I jumped through the
> hoops of getting 240VAC to it, which would have been a project in of
> itself.
>
>
>
> Next best option at hand was a pair of 100AH  LiFePo3 batteries in series.
> Under the best of circumstances, that’s only going to give me 26 volts and
> change, not the full 28 as advised by WA7YBS in his excellent article on
> his website.
>
>
>
> Powered up last night into a KW-rated dummy load, read the manual and
> ascended the not very steep (grunt) learning curve to operate, saw that it
> was making a bit over 100 Watts, and seemed to be functioning mostly
> properly.
>
>
>
> Only issue is that the T-195 PTO seems to be off frequency, have to set
> the dial 28 kc low to be on frequency of 7293, our only active Southern and
> Central CA non-audiophile AM frequency, struck me as a place that wouldn’t
> clutch pearls over a carbon microphone and dynamotor roar.
>
>
>
> This morning with topped-off batteries at the ready, connected to the
> dipole and had a brief QSO with some of the regulars, as far north as
> Gilroy, and was also informed I was being heard Q5 on the Northern Utah
> WebSDR. Was also complimented that my audio sounded far better than any
> carbon microphone should, not sure if I’m believing that one!
>
>
>
> So it’s alive! I just need to come up with a better power source, having a
> look at that today.
>
>
>
> How involved is it to correct the dial error? Or should I just accept that
> as a quirk of 75 year old unrestored equipment?
>
>
>
> Thanks and 73,
>
> Jason WA6BBQ
>
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