[Boatanchors] TVI and stripping surplus military radios

jeremy-ca km1h at jeremy.mv.com
Mon Sep 24 17:16:02 EDT 2007


The ham club at NAS Olathe, K0NAB,  used a 32V1 driving a BC-610 on 20-10M 
into 6 el Telrex's at 80-95'. The trailer parks at the end of the base got 
really radiated!

I dont know how efficient the amp was with the modified coils but it sure 
got great signal reports from all over the world.

Carl
KM1H




----- Original Message ----- 
From: <telegrapher at att.net>
To: "William L Howard" <wlhoward at verizon.net>
Cc: <boatanchors at mailman.qth.net>
Sent: Monday, September 24, 2007 3:41 PM
Subject: Re: [Boatanchors] TVI and stripping surplus military radios


> Well i can guarantee you that the BC-610 will generate lots of it.  At 
> least the ones i had here did (an E and an I).  Especially when you have 
> the back cover off and no ground!  Yeah i know, dangerous practice so 
> don't get started on that.  But it was fun for a bit.  Lots of variables 
> here so no need to nitpick on what i did wrong or what some of the 
> variables were.  That was years back and i'm not interested in hearing 
> about them anymore as i don't own one and doubt i ever will.
>
> Larry
> W0OGH
>
>
> William L Howard wrote:
>
>>> I'm not aware of any ham or military TX that caused TVI on 160-40M.
>>> BTW, manuals were in very short supply for WW2 gear that was of any use 
>>> to hams. Carl KM1H
>>
>>
>> If you really want to generate some TVI assemble a spark gap transmitter 
>> from a Model T ignition coil. Does wonders to radio and TV reception!
>>
>> One of the many "how to convert surplus radio books" had an interesting 
>> article on the SCR 181 A/C set. Remove all the tubes, remove the coils, 
>> then remove the variable capacitors and then remove all other components. 
>> What is left is an empty aluminum chassis with holes in it. To me, this 
>> is not a modification, this is a complete rebuild on a former radio 
>> chassis. Why not start with an empty chassis?
>>
>> Bill Howard
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