I think the 1N4007 would work fine. They are actually, a HF type diode
die, as well as being used as power rectifiers. Try to get a Motorola
NOS set. (rather than unknown import or unmarked types). The 1N4007
would be the lowest cost as they are quite common. Normally for RF, you
would use a purposely designed PIN type diode, but these die made a
suitable substitute, as they had the PIN structure.
Stuart
K5KVH
David Feldman wrote:
> I'm investingating a problem in my Omni VI type 563, possible diode failure
> in the antenna T/R path. The low-pass filter board (81592) shows three
> diodes in the main receive path from antenna to front end (D6, D7, D8) as
> 1N4007 rectifier diodes (but they appear to be used for RF switching.)
>
> Is the 1N4007 still the normally used part for service, or should I look for
> another device type.
>
> Thanks,
>
> 73 Dave WB0GAZ
>
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