[Antennas] Viking antenna tuner question

[Michael Josefsson]

For testing you could just as well use a couple of 1n4148's. But for  
best linearity and stuff you should then get the 1n5711's.

/Micke
On 14 jan 2008, at 02.25, Terry Conboy wrote:

> At 12:45 PM 2008-01-13, FireBrick <w9ol at billnjudy.com> wrote:
>> I have a used Viking MB-V-A
>> It has the swr bridge installed.
>> I replaced the battery but the swr bridge does not work.
>>
>> I'm assuming it's the normal diode type bridge and before I open it  
>> up does
>> anyone know the value of the diodes?
>> I have a manual but it doesn't indicate the value.
>>
>> I know they aren't too crucial.
>> Anyone have experience with this?
>
> The manual at ftp://bama.sbc.edu/downloads/nye/mbva/mbva.pdf has a  
> schematic, and it looks like there are a pair of 1N5711 diodes in  
> the bridge.  These are Schottky diodes.  http://www.datasheetcatalog.com/datasheets_pdf/1/N/5/7/1N5711.shtml
> Available at Jameco for 40 cents each.  http://www.jameco.com/Jameco/catalogs/c281/P37.pdf
>
> Of course, there are a lot of other active components in the circuit  
> that could have failed, as well.
>
> Good luck,
> Terry
>
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