Things to do while waiting on your Elecraft kit

[Anthony ~ W8AF]

While waiting on your Elecraft kit you might want to read up on a dual
diversity receiver.  Radio Shack had the Hallicrafter Skyrider with dual
diversity receiver that had Infinite Adjacent Channel Rejection on page
two of their 1939 catalog! Is there truly anything new in electronics?
See it here.
http://www.radioshackcatalogs.com/catalogs/1939/

Click on the upper or lower right corner to turn to page two.

The other old RS Catalogs are here:

http://www.radioshackcatalogs.com/

Darn it.  I might have to take my laptop to the bathroom with me now.

73, de W8AF  ~  Anthony
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[John Ragle]

I wonder how many of these beasties Hallicrafters sold? I saw one in the
flesh during my many visits to the Station KFAR Transmitter Site on
Farmers' Loop Road near Fairbanks, AK when I was a sub-teen. KFAR went
on the air around 1940, and probably used the dual-diversity receiver to
get information from Stateside before the war and the Signal Corps'
provision of communication...at the time, the back-country telephone
WIRE (singular) ran on stick tripods through the muskeg along the
Richardson "Highway," and of course the Alcan Highway did not exist.

John Ragle -- W1ZI (ex-KL7PM)

=====

On 7/11/2011 1:57 PM, Anthony Simons wrote:
> While waiting on your Elecraft kit you might want to read up on a dual
> diversity receiver.  Radio Shack had the Hallicrafter Skyrider with dual
> diversity receiver that had Infinite Adjacent Channel Rejection on page
> two of their 1939 catalog! Is there truly anything new in electronics?
> See it here: http://www.radioshackcatalogs.com/catalogs/1939/

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[k6dgw]

On 7/11/2011 11:13 AM, John Ragle wrote:
> I wonder how many of these beasties Hallicrafters sold? I saw one in the
> flesh during my many visits to the Station KFAR Transmitter Site on
> Farmers' Loop Road near Fairbanks, AK when I was a sub-teen.

I too have seen one, a beautiful example of pre-war radios.  Check
www.radioblvd.com/DiversityDD1.htm  That's were I saw it, a truly great
radio museum in a very unlikely place [Virginia City, NV].  He does
super restoration and most of his ham gear [he has a lot of broadcast
memorabilia too] works, including the E. F. Johnson Desktop KW.  He
restored an SX-28 I had inherited and has it on display.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2011 Cal QSO Party 1-2 Oct 2011
- www.cqp.org
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[AC7AC]

CONTENTS DELETED

The author has deleted this message.

[Bob-270]

And the P3 is just a minor update to the Hallicrafter SP44 from the mid 40's,

Here:

http://www.ohio.edu/people/postr/bapix/SP44.htm

Same old + / - 100kc bandwidth.

73,
Bob
K2TK  ex KN2TKR  (1956) & K2TKR
>   -----Original Message-----
>
> On 7/11/2011 1:57 PM, Anthony Simons wrote:
> Is there truly anything new in electronics?
>> See it here: http://www.radioshackcatalogs.com/catalogs/1939/
>
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[Tony Estep]

On Mon, Jul 11, 2011 at 2:19 PM, Ron D'Eau Claire <[hidden email]> wrote:

> ...I've come to the conclusion that virtually every significant concept we
> use
> in our radios today was known by the late 1920's..
>
> I'm no historian of radio, but I do remember the stuff we used in the 50's.
Consider this: take an HQ-100 and add a few crystals to the filter. Then
pipe the IF to a Central Electronics Signal Slicer. Then pipe the audio to
one of the outboard audio filters you could buy in those days, the kind with
the chokes and the stand-up electrolytics. What would a block diagram of
that setup resemble? Think about it....

73,
Tony KT0NY
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