[ARC5] VFO provenance
Bill Fuqua
wlfuqu00 at uky.edu
Wed Feb 1 12:51:51 EST 2012
He clearly states that it is just a VFO in the description. I think he
provided lots of stuff in the
title to catch searches for 20A Central Electronics or Ham Transmitter.
I started out with a 10A driving a pair of 6146Bs and then went to a 10B
and then a
20A in my first round with ham radio, I got back into it when my 10 year
old son became interested.
I had only one coil set for the 10A so I removed the power lamp and the
front panel 1/4 inch plug
and mounted 2 rotary switches. Added tapped coils and band switched it. It
was not real efficient but
it did produce a bit over 1 Watt on all bands which still drove my 6146Bs
just fine.
I experimented with 4 grounded grid 6AG7 as well and could drive them
to some ridiculous power
as well.
Later I went to a pair of 4CX250Bs a year or so before being drafted.
73
Bill wa4lav
At 12:30 PM 2/1/2012 -0500, Sandy wrote:
>Central Electronics, at one time, sold a conversion kit for the BC-458
>"command transmitter" to convert it into a VFO for the model 10A, 10B or 20A
>exciters. They included the plastic dial plate shown as well as some parts
>necessary for the modification. For an additional $20 I recall, they
>included a very nicely painted/silk screened cabinet to enclose the BC-458
>that matched the Central Electronics exciters at that time.
>
>The guy who owned this one originally did this one "on the cheap" and didn't
>buy the external cabinet!
>
>I had a 10B and a "458 VFO" as my first real SSB transmitter when I was
>going to high school. I bought it with money I earned building Heathkits
>for the local hams in New Orleans. Originally used it with a second hand
>National NC-=125 receiver I bought a couple of years earlier. Yes the
>receiver DID drift on SSB and so did the BC-458! I remember buying a
>spanking brand new BC-458 for around $5 as they didn't cover a ham band and
>were VERY plentiful at the time. (Late 1950's)
>
>The "fib" in the ebay ad is the statement about the 20A transmitter. This
>is just the VFO for it! The guy probably doesn't really know what he
>actually has, a "5 mhz VFO for the 20A, probably LESS the additional
>converter needed for 15 and 10 meter operation as well!
>
>73,
>
>Sandy W5TVW
>
>-----Original Message-----
>From: Laura and Jim
>Sent: Tuesday, January 31, 2012 11:04 PM
>To: arc5 at mailman.qth.net
>Subject: [ARC5] VFO provenance
>
>Guess what this used to be..........
>
>http://www.ebay.com/itm/Central-Electronics-458-VFO-Ham-Radio-Transmitter-Central-Electronics-20A-/160726005891?pt=LH_DefaultDomain_0&hash=item256c043883
>
>Don't think Central Electronics used Dymo Labels...........
>
>73 DE JIM K6FWT
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