[Premium-Rx] WJ 796216 VHF-UHF Preselectors for sale

[Terry O']

Just to be clear.  There are two tuning control voltage inputs.  One 
controls the two low band filters and the other controls the three high 
band filters.

Terry O'


On 11/2/2018 9:52 AM, Terry O' wrote:
> I'd like to sell four Watkins-Johnson 796216 voltage tuned 20-1000 MHz 
> preselector modules.  They are voltage switched and tuned. These were 
> front end modules for SIGINT surveillance receiving systems developed 
> for Iran and Germany.  They come from the estate of the lead engineer 
> at WJ for the German iteration of this system (WJ-9049).
>
> They are five band units, each band with a separate SMA input and a 
> common SMA output through the attached K&L Microwave 1 GHz low pass 
> filter.  Bands are controlled by +15 / -15 VDC.  The bands are:
>
> Low Band 1  -  20-50 MHz
> Low Band 2  -  50-125 MHz
>
> High Band 3  -  125-250 MHz
> High Band 4  -  250-500 MHz
> High Band 5  -  500-1000 MHz
>
> The low and high bands have separate tuning control voltage inputs and 
> both are tuned linearly with 2-28 VDC.
>
> Two modules are missing the metal side plates.  The other two are 
> complete.  I'd like $100 each for the complete units and $60 each for 
> the ones without side panels.  I will supply the schematic, block 
> diagram and operation description from the WJ system manual with each 
> module.  Shipping by USPS Priority medium boxes ($13.65). This box 
> could handle up to four modules.
>
> Photos and more information upon request.
>
> Thanks for reading,
> Terry O'
>
>
> ______________________________________________________________
> Premium-Rx mailing list
> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
> Help Page: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Premium-Rx at mailman.qth.net
> Help Contact eMail:  radio at 8zo.com
> Home Page:  http://www.premium-rx.org/