[NJARC] Uncle Bill Henderson's Radios :) :) :)
Scott Roberts
ng19delta at yahoo.com
Sat Oct 27 21:26:45 EDT 2007
Joe (and Everyone)- one of the interesting things is
the power supply in this radio: I am pretty sure it
was put together by RCA, as they were using the radio
in their "Equipment Development" section at Lancaster,
although I am not sure when.
While going over it this evening, I noticed some heavy
wax drippings- consistent with a power supply
overheating. It appears the power unit was simply
designed to replace the dynamotor.- one transformer, a
choke, a 5Y3GT tube, large wirewound resistor, couple
electrolytics- Very nicely made, however, I think
something overheated in the past. Although it was
working fine for a couple hours last night, I am
concerned damage may be done if I don't do some mods
to the power unit.
On the bottom of the area is a VERY LARGE condensor
box, which is original, and still in the circuit.
There was heavy wax build up on one corner of the top,
which was also arc blackened- the wirewound resistor
apparently overheated and arced there- there was a
metal band around it, or more correctly, what was left
of a metal band, which crumbled when I touched it.
The transformer supplies the radio through the
original dynamotor terminal strip. The high voltage
reading there is 450+VAC. Should be 228, by the
voltage diagram I have. I checked a couple tube
voltages: low volts are within reason, but the 100 or
250Vs are very high- 100s are over 200, 250 over 400.
Sound like a trashed transformer? And after only a
minute the resistor is quite hot. I have no specs on
the transformer in question, other than it is a Merit
Coil P-1352.
Right now, I am going to disconnect the power cable- I
need to do this to relocate it- currently it simply
pops out the top of the set(very workman like) I am
also going to make a schematic of the power supply. I
am hoping I can simply swap in a new power supply, and
put it into the mix. I am considering A Hammond
HX261M6 (specs- 83 VA, 215V at 269 ma, 6.3v @ 4A) from
Radio Daze, unless I find I have something suitable
here.
All the other electrics look to be original, and the
chassis nice and clean.
Please let me know what you think.
Scott
PS- As to the Hallicrafters, I think they are an
S-16(orSX-16) and S(SX)-20 Both have repair dates
prior to the war, and have the open disk dials. Can't
wait to play with them, as well!
--- JOE CRO <n3ibx at verizon.net> wrote:
> Visit our web site - See http://www.njarc.org
> _______________________________________________
> Joe,
>
> The is a formal request for a list of ALL
> transmitters
> and receivers that you do *NOT* have. There must be
> at
> least a half dozen.
>
>
> John,
> A half dozen transmitters and receivers I
> don't have? Actually, many
> many more. Too many transmitters and receivers and
> not enough time, as the
> song goes................
>
> When I grow up, I want to be just like Bill
> Overbeck. Bill is my idol and
> mentor!
>
> Very Best Regards,
> Joe Cro N3IBX
>
>
> ----- Original Message -----
> From: "john ruccolo" <jr6v6gt at yahoo.com>
> To: "New Jersey Antique Radio Club"
> <njarc at mailman.qth.net>
> Sent: Saturday, October 27, 2007 2:38 PM
> Subject: Re: [NJARC] Uncle Bill Henderson's Radios
> :) :) :)
>
>
> > Visit our web site - See http://www.njarc.org
> > _______________________________________________
> > Joe,
> >
> > The is a formal request for a list of ALL
> transmitters
> > and receivers that you do *NOT* have. There must
> be at
> > least a half dozen.
> >
> > ;-)
> >
> > JR
> >
> > --- JOE CRO <n3ibx at verizon.net> wrote:
> >
> >> Visit our web site - See http://www.njarc.org
> >> _______________________________________________
> >> Scott,
> >> If you enjoy your BC-348 rx, you NEED
> it's
> >> matching transmitter,
> >> namely the autotune "ART-13". It uses a single
> 813
> >> modulated by a pair of
> >> 811's. The original DY12 dynamotor would be great
> to
> >> have as it's power
> >> supply, but you can whip up a 28V/1250V supply
> that
> >> would work FB. Both the
> >> BC-348 and ART-13 were standard equipment in the
> >> famous B-29 "flying
> >> fortress". If you'd like to see one in operation,
> >> let me know and you're
> >> welcome to stop over and do so, and get a
> "gander"
> >> at the homebrew supply I
> >> use with it. Everything is built into a mechanics
> >> tool cart, including all
> >> of the meters.
> >>
> >> Once you get "bit" with playing with a ART-13,
> >> you'll be hooked. Think of
> >> having a medium power AM/CW/MCW (modulated CW)
> 100W+
> >> class rig that you can
> >> preset everything from loading and tune, down to
> the
> >> frequency. All you do
> >> is flaick a switch and within 24 seconds (per
> >> milspec) you'll be ready to
> >> modulate the aether!
> >>
> >> Mod-U-Later, and keep on having fun with stuff
> that
> >> glows!
> >>
> >>
> >> Joe Cro N3IBX
> >>
> >> ----- Original Message -----
> >> From: "Scott Roberts" <ng19delta at yahoo.com>
> >> To: "New Jersey Antique Radio Club"
> >> <njarc at mailman.qth.net>
> >> Sent: Saturday, October 27, 2007 12:09 AM
> >> Subject: Re: [NJARC] Uncle Bill Henderson's
> Radios
> >> :) :) :)
> >>
> >>
> >> > Visit our web site - See http://www.njarc.org
> >> > _______________________________________________
> >> > Well, the BC-348Q works reasonably! Had a bad
> >> 5Y3GT in
> >> > the power supply(RCA homebrew in place of the
> >> > dynamotor) which I replaced with a 5V4. Does
> not
> >> fit
> >> > properly- but works out of the case, which is
> good
> >> for
> >> > testing. Listened to all the bands, figured out
> >> how
> >> > everything seems to work.
> >> >
> >> > Was flipping, about to switch off, and hit a
> >> station
> >> > at 3.225 playing Glenn Miller music. Something
> >> Just
> >> > Right about that- Glenn Miller playing on a
> WWII
> >> > bomber radio... :)
> >> >
> >> > Scott
> >> >
> >> >
> >> > --- Scott Roberts <ng19delta at yahoo.com> wrote:
> >> >
> >> >> Visit our web site - See http://www.njarc.org
> >> >>
> _______________________________________________
> >> >> At long last, I have arrived home with an
> >> assemblage
> >> >> I
> >> >> had been considering for a while, and waiting
> to
> >> >> receive since my Aunt asked me last month if I
> >> knew
> >> >> anybody who would want... My late Uncle Bill
> >> >> Henderson's Ham and SW radios!
> >> >>
> >> >> Uncle Bill had been a "Mickey Man", or radar
> >> >> operator/mechanic with the 8th Air Force in
> >> England.
> >> >> >From what I understand, he made a couple
> combat
> >> >> missions, but usually was in the repair shop,
> >> fixing
> >> >> early Radar. After the war, he took a job with
> a
> >> >> small
> >> >> tech firm called "RCA" in Lancaster, Pa.
> Involved
> >> >> with
> >> >> the development of color television, he
> remained
> >> >> with
> >> >> the company until the mid 1980s. During the 35
> >> years
> >> >> with RCA he made many trips overseas,
> including a
> >> >> few
> >> >> to Taiwan, Mexico and Russia(before we won the
> >> Cold
> >> >> War), to instruct people in how to work with
> >> color
> >> >> tv
> >> >> and other tubes. Uncle Bill was always a nice
> >> >> country
> >> >> boy from Paris, Arkansas- his drawl never
> left,
> >> and
> >> >> was my favorite uncle growing up... After his
> >> >> youngest
> >> >> son (of 8 children!) passed away in an auto
> >> >> accident,
> >> >> he was never quite the same; he developed
> >> >> Alzheimers,
> >> >> and passed away in 2002. I still think of him
> >> from
> >> >> time to time, and wish I had the chance to
> talk
> >> >> radios
> >> >> with him now.
> >> >>
> >> >> Now that I've introduced him, let me tell you
> >> about
> >> >> the radios which my Aunt Mildred passed on to
> me
> >> >> from
> >> >> his "radio shack", long cold now, and in need
> of
> >> >> TLC.
> >> >> All have a heavy coat of dust, but I am pretty
> >> sure
> >> >> they will clean up nicely. I have not looked
> up
> >> what
> >> >> most of these do yet- if anyone can let me
> know
> >> >> their
> >> >> true potential, I'd appreciate it...
> >> >>
> >> >> To start with, a Hallicrafters "Sky Champion",
> >> which
> >> >> appears to be a receiver;
> >> >>
> >> >> Another Hallicrafters set, a "Super Sky
> Rider",
> >> >> which
> >> >> appears to be a transmitter/receiver;
> >> >>
> >> >> A Heathkit HX-20, which also appears to be a
> >> >> transmitter/receiver, (along with a homebrew
> >> power
> >> >> supply for it);
> >> >>
> >> >> A Johnson Messenger 250 CB radio;
> >> >>
> >> >> A brown bakelite or plastic RCA wedge shaped
> wall
> >> >> speaker;
> >> >>
> >> >> A nice CW key, looks like another nice one I
> >> have,
> >> >> with ball bearing pivots;
> >> >>
> >> >> And last, but not least, the one I had really,
> >> >> REALLY,
> >> >> been hoping for, a Wells-Gardner BC-348Q, with
> a
> >> tag
> >> >> marked "Equipment Development Lab", and which
> had
> >> >> been
> >> >> given to him after he retired, by the RCA
> plant
> >> when
> >> >> they were cleaning out their old storage.
> Having
> >> >> looked inside this one quickly, I have high
> hopes
> >> >> for
> >> >> some nice listening.
> >> >>
> >> >> I intend to use these in my own "radio shack",
> >> along
> >> >> with my Hallicrafters HT-37 & SX-111 Mk. 1
> >> >>
> >> >> Thanks for reading along- hope you enjoyed the
> >> >> story:
> >> >> I would have shown one of the radios, and told
> >> all
> >> >> this at RCA show and tell last month, but
> some
> >> >> unforeseen circumstances occured.
> >> >>
> >> >> Scott
> >> >>
> >> >>
> >>
> __________________________________________________
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> >> >>
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> >> >>
> >> >
> >> >
> >> >
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