[Elecraft] KAT100 Tuning Failure

[Don Wilhelm]

Jeremy,

Your first link resulted in an error 404, but the 2nd showed a diode 
that I believe may be a specialty version. It was highly overpriced at 
over $11 each.  The Aligent data sheet for the 1N5711 shows it to be a 
15 ma device.
You would do better to order from Elecraft.  Order E560004 - Diode, 
1N5711, small glass body from parts at elecraft.com.  Order 2 of them (or 
possibly 4 since you do not yet know the status of those in the KPA100).

An alternate source is "The Toroid King" http://www.partsandkits.com.  
Diz prices his 1N5711 diodes at 10 for $2 (plus shipping).
I have purchased those diodes from Diz for a long time - never a problem.

Yes, those test results are not valid unless the KAT100 was in CAL - in 
any other setting there would have been L and C elements active, and the 
goal is to test the wattmeter as the first step.

73,
Don W3FPR


On 7/20/2015 7:59 PM, JeremyJones wrote:
> The diodes I was looking at were 1N5711, but they were either 70V 15mA
> (http://www.digikey.ca/scripts/DkSearch/dksus.dll?Detail&itemSeq=176360177&uq=635730153536694158)
> or 70V 33mA
> (http://www.digikey.ca/product-search/en/discrete-semiconductor-products/diodes-rectifiers-single/1376383?k=1n5711).
>
> I just want to make sure I get one with the proper rating.
>
> I did not have the KAT100 in CAL mode.  Guess I'll be redoing the tests and
> posting the results shortly.
>
>