[Boatanchors] ARC 5 stuff - LIST
jeremy-ca
km1h at jeremy.mv.com
Mon Sep 24 09:19:09 EDT 2007
I was thinking more along the lines of the beanie with the propeller on the
top Jim.
Im not aware of any ham or military TX that caused TVI on 160-40M. The
ART-13 did generate it on 20 but there was little WW2 gear that covered 20M
and almost nothing above 18 Mc in the HF range. The VHF gear using crystals
down in the low HF range certainly did a number on TV sets.
The 1946 designed Viking I was a notorious TVI generator and Johnson had to
come out with a internal shielding kit for it in the 50's. I used copper
window screening on mine plus a LPF to get out of the 21 Mc TV IF's.
BTW, manuals were in very short supply for WW2 gear that was of any use to
hams. I could stroll Radio Row in NYC in the early-mid 50's and find all
sorts of manuals for radar sets, walkies, test equipment of no use, and DF
gear but never did find one for any ARC-5 related gear. Same at the local
school and other club stations.
Carl
KM1H
----- Original Message -----
From: "Jim Brannigan" <jbrannig at optonline.net>
To: <WA5CAB at cs.com>; <jfor at quik.com>; <km1h at jeremy.mv.com>
Cc: <boatanchors at mailman.qth.net>
Sent: Monday, September 24, 2007 8:49 AM
Subject: Re: [Boatanchors] ARC 5 stuff - LIST
> This started out to be an informative thread........
>
> It too bad that the aluminum foil hat brigade felt obliged to opine...
>
> Jim
>
>> The problem was that
>> certain people with an axe to grind (equivalent to today's liberal
>> Democrats)
>> wanted to put the Army and Navy down and did so profusely in print. The
>> myth
>> that military radios generated TVI was also helped along by some civilian
>> companies wanting to sell radios (run by non-vets for the most part).
>> And by the
>> 60's it was an accepted fact among poorly educated hams. But it was a
>> myth
>> nonetheless.
>>
>> If you exclude the prewar SCR-178, 179, 194 and 195, none of the radios
>> that
>> the US used during WW-II are TVI producers. If the person tuning them
>> was
>> even marginally competent. Which the postwar conversion handbook writers
>> were
>> not by any stretch of the imagination. And this includes even the much
>> maligned
>> BC-640. Which one handbook writer claimed produced TVI even when turned
>> off.
>> That statement was mere rabble rousing bullshit. I once had two of them
>> on
>> the air. And they worked just fine. None of my neighbors ever
>> complained.
>> And we were for those days in a fringe area, well over 30 miles from the
>> nearest TV station. It was all self-serving BS. Only simple minded
>> nincompoops
>> fell for it.
>>
>> With regard to classification, the WW-II Restricted became Confidential,
>> Confidential became Secret, etc. Virtually all Restricted TM's were
>> declassified
>> in late 1945 shortly after VJ Day or in early 1946, before the
>> classification
>> name change. Consequently, after the classification name change, none of
>> the
>> publications on the radios that this thread has discussed were
>> classified.
>>
>> In a message dated 9/23/2007 9:38:22 PM Central Daylight Time,
>> jfor at quik.com
>> writes:
>>> jeremy-ca wrote:
>>>
>>> >What you are looking at in 2007 has absolutely no bearing on what was
>>> >available to the ham in 1947. These days it is all available as
>>> >reprints,
>>> >CD's or downloads.
>
>
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