[Milsurplus] what is it?

[Francesco Ledda]

It comes from an Univac antenna tuner from a B-58 Hustler.

Sent from my iPad

On Dec 4, 2011, at 6:50 AM, Mike Hanz <aaf-radio-1 at aafradio.org> wrote:

> Not sure of the specific equipment, but this looks like an aircraft 
> antenna tuner, missing the variable vacuum capacitor.  They're used with 
> transmitters remotely mounted from the antenna using a long 50 ohm 
> transmission line, and condition the antenna impedance to 50 ohms at any 
> of the operating frequencies so that there are minimum losses in the 
> coax.  The transmitter is pre-aligned to feed a 50 ohm resistive load, 
> so tuning at that end is eliminated.  The concept works well with a ham 
> antenna on the ground as well!
> 
> On 12/3/2011 10:19 PM, Paul Kraemer wrote:
>> From a pal of mine
>> Very interesting rotary inductor driven by a servo
>> Paul K0UYA
>> 
>> https://picasaweb.google.com/davidjmessing/ServoRollerInductor?authuser=0&authkey=Gv1sRgCOSizuKckKuhSQ&feat=directlink
> 
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html