[Boatanchors] ARC 5 stuff - LIST

[J Forster]

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.

You claimed classified. I disproved your point

[snip]

> > resonate a series LC.
>
> You make my point very well. In those days hams had to actually know
> circuitry to get a General and a lot more for the Advanced. These days you
> get the license at Wal Mart.

Your point was the data was not available to use the units as designed. I
pointed out that the required data is minimal.

>
> If the design spec is 500V and the tube is rated at 750V and a ham uses that
> voltage along with other correct parameters then what is your problem?
> Components in the amplifier stage of an ARC-5 TX can easily handle the
> voltage and operating that way doesnt generate any more clicks than in stock
> form. Hams have had to improve the circuitry of many old military rigs in
> order to make their poor signals acceptable on the ham bands. Ive listened
> to several unmodified ones that sound like a CBer designed them.
>
> 1941 high end ham equipment was designed in 1940-41. However 1941 military
> equipment was usually of a mid 30's or earlier design, no high level
> engineering skills required to be the lowest bidder.

Funny...  I don't remember many metal tubes in 1930's radios.

> [snip]
>
> Im even less impressed with the hams of today and since you dont use a call
> sign I have to assume that your comments are more from some personal bias
> than actual experience.

I collect WW II radios and other things, because of their design elegance. On
air chatter totally bores me. I really don't give a damn about which band is
open or what new antenna someone has. If I want to talk to someone, I pick up
the 'phone or email them.

> OH? I can think of many military items that are probably way too much for
> the SWL and many hams. There is a BIG difference between mission specific
> items for combat aircraft vs capital ships of the Navy, shore installations,
> NSA, and many other goverment organizations.

I collect both airborn and ELINT gear.

> With all the secrecy involved plus the complexity of todays military
> electronics almost nothing is reaching the public. The best items Ive found
> are high power VHF & UHF amps that can be put on ham frequencies with a bit
> of work. It helps to have a VNA on my work bench.
>
> Carl
> KM1H

I routinely use SAs with Tracking Generators and  a VNAs to characterize
components and test things like TWTAs and microwave synthesizers.

However, the thread was about chopping up WW II radios.

-John