I was wondering if anyone has heard of or worked on any Northern Radio
Company equipment. I picked up a unit at last years Anchorage ham fest.
These unit were made in Seattle in the 1950's it appears and they
incorporate a cabinet about 4 feet tall housing receiver, power supply and
Tom
I have restored three old northern receivers made in the early 40s. I also
have a northern am transmitter using 807s also from the early 40s which I
have yet to restore.
The three receivers were models 736, 736-E, and N.-600.The 736 has big
airplane dial and also two different nomemclature
FOR SALE
Drake TR-4 with RV-4 VFO in top mount above TR-4. Package also includes Drake
AC-4 supply, and DC-4 supply for mobile use. With manuals and cables. Good but
not great cosmetic condition with fan mounted externally above final cage. Also
with some scratches and other marks. I have used
Hello to all,
I have a source of old AM marine radios originally used on the 2 MHz
marine band.
These radios still function correctly, most of the 150 watt output
level, with a few 1 KW models.
Has anyone attempted to convert any of this type radio for use on the
160 meter or 75 meter bands?
Mark,
Do you have any photos of the rf section, and are they tube type or
solid state? I may be able to offer some suggestions if I could see what
you have to work with. What types of tubes, power devices are in them? I
have modified several different types of equipment (military
commercial)
and
Hi Mark,
First yes I believe it is worthwhile because it gets them on the air and not
in the dump! I have an old Hallicrafters AM aircraft transmitter I want to
put on 75m just because I can. I bet I won't find very many more of them on
the air.
As a side note do you have any manuals on
I don't have an answer for you, but this sparks a non-amateur boat-anchor
question:
I recently took (and passed) my Second Class radiotelegraph test. I did
this simply because I wanted to, not because I ever expect to be a marine
radio operator. And yes, the FCC still issues this otherwise
God,
I took the general radiotelephone operators test about 25 years ago
(still have it), and it was loads of tube circuit trouble shooting
questions,
frequency allocations, antenna stuff.
Both it and the general ham test were easy as stink, because
I was actually interested in the stuff.
Seems
Mark
I remember seeing an article somewhere. Maybe Electric Radio Mag
some
time ago or possibly an old QST about converting marine radio's for 160m.
I'll try to look but someone else may remember in the mean time. I have an
ols Simpson 45 I held on to for just that purpose
In a message dated 9/9/04 5:00:41 PM, [EMAIL PROTECTED] writes:
Now, this last part got me to wondering: were regenerative receivers made
and used commercially in shipboard service within living memory?
Oh yes, particularly in the LF/MF range. The RCA AR-8510 (15 to 650 kc)
being one
I have a Simpsom 55 which I hope to have operational on 160m soon.There was
an article in the late 1970's in 73 Mag about general conversion info on
these radios to 160 or 75.
Joe Crawford W4AAB
- Original Message -
From: Mark Cobbeldick [EMAIL PROTECTED]
To: amradio@mailman.qth.net
Sent:
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