[AMRadio] WTB: WRL Globe King 500-C (or A)

[Charles Ring]

Donald Chester wrote:

> >From: Charles Ring <charlesr at infonline.net>
> >
> >It's conventional plate modulated AM and fit for continuous duty - what is
> >to dislike about it?
>
> I never owned one, but I have kept a couple of them on the air for friends.
>
> I dislike the under-rated components in the rf final, and the under-rated
> modulator.  Neither transmitter would ever make more than 85% positive peak
> modulation no matter what we did.  The final amp runs too much plate voltage
> compared to the modulater (1800 volts on the final, 1250 on the modulator,
> as I recall).
>

.85% is good enough for me - we're not in an Arbitron-driven loudness war after
all/


>
> Anothe dislike (that is easy to fix) is the "couplettes" they use between
> audio stages that make the audio sound like sideband.  I yanked all those
> out and replaced them with conventional r-c interstage coupling circuits,
> resulting in much improved audio.

yes those have to go.

>
>
> Many Globe Kings I hear on the air have hum on them.  I suspect it is a vfo
> problem causing 60 or 120 Hz frequency or phase modulation of the carrier,
> since I have heard users say they replaced the filter capacitors and the hum
> did not change.  The ones I worked on didn't have that problem.

with my 500A the vfo is external and i have another different vfo ( V-10 by
Globe Electronics [a division of GC-Textron ELectronics Roclford Illinois] -
what relation if any is this to WRL?)


>
>
> I think the earlier Globe King 400's with the plug-in coils and pushpull
> triode final is a much better transmitter.

I like  the convenience of band switches and easy to find tubes.

73 de W3NU