[Milsurplus] BC-1335 Info or picture

[Morrow, Michael A.]

Clarence wrote:

> My son bought a BC-1335 ... I'm going to order an SCR-619
> manual copy...

There's a schematic at:  

http://www.fernblatt.net/sch/bc-1335.gif

Unfortunately this file is not .pdf format, so that limits its
usefulness and ease of printout.

> Does anybody have any pictures of a complete BC-1335 and/or have any
> experience operating one?

I have no pictures.

I used one 32 years ago to copy my local Sheriff Department on 37.1
mcs.  I just happened to have the correct channel 371 crystal unit.
I somehow suddenly lost the filaments in several tubes one day.  Never
figured out what happened, but at least there were spares in the box.

The main oddity of the unit, to me, is that it has no squelch.  Even
the BC-1000 had squelch, so I don't know what the thought was with the
BC-1335.  It has a built-in alignment indicator (magic eye tube), and
the upper cover contained a schematic and alignment instructions,
plus a small cage to contain about 12 crystals.  Normally 120 crystals
were stored in a CS-137 crystal case to cover 27.0 to 38.9 mcs in
0.1 mcs increments.  The transmitter is rated for about 4 watts out,
IIRC, and you can use the standard T-17 carbon mike.  I don't know
how legal this wideband FM unit would be today on ten meters.

I fed mine 12 vdc.  Most BC-1335s were modified to add another power
connector in the upper right part of the front, to allow connection to
a BA-70 battery (same as used for the BC-1000) for portable use.  I
have one with, and one without, this mod.

I have a manual for Aircraft Radio Corporation Type 12 equipment
(LF/MF receiver, VHF receiver and transmitter) which shows an
interconnection to the SCR-619.  I've read of installations in light
military aircraft (Stinsons, Moodys) of the SCR-619.  Yet, I've still
got to wonder about having to listen to an un-squelched FM SCR-619 along
with other aircraft communications gear feeding into the interphone
system.

The BC-1335 is a cleaver little all-in-one Delco unit.  I seem to
recall in some configuration it had a "JAN" designation.  If only
it had squelch!

It may be difficult to find the covers you are missing.

73,
Mike / KK5F