[Milsurplus] mystery diode

[Brooke]

Hi Ray:

Do you have a way of measuring figuring out the voltage across the diode.  For example if you know the meter sensitivity 
(for example: 1 mA at full scale is 1 Volt) then you would know the diode voltage when the meter was pinned at max reading.

I have some data on diodes that are being sold as "1N34", but most are Schottky diodes.
https://prc68.com/I/Xtal1800.shtml#Diodes

-- 
Have Fun,

Brooke Clarke, N6GCE
https://www.PRC68.com
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.

-------- Original Message --------
> Date: Mon, 15 Sep 2025 01:04:08 +0000
> From: Ray Fantini<RAFANTINI at salisbury.edu>
> To: MMRCG<mmrcg at groups.io>, Military Radio Collectors Association
> 	<mrca at mailman.qth.net>, List Milsurplus<milsurplus at mailman.qth.net>
> Subject: [Milsurplus] mystery diode
> Message-ID:
> 	<DM8P220MB04726E2DA952AB901FBAAB24B815A at DM8P220MB0472.NAMP220.PROD.OUTLOOK.COM>
> 	
> Content-Type: text/plain; charset="iso-8859-1"
>
> Ok, so I have a very early AN/PRC-74 on the bench that has a shorted PD9047 diode (CR-15) that's used to develop the voltage for the tuning meter. the dam thing is very small and somehow don't think a 1N34 will take its place.
> AI tells me that's a way obsolete part number and beyond its ability to come up with a replacement, anyone have any ideas? the tuning meter is somewhat important on the 74
> This particular radio is serial number 606 and the PA deck is serial number 8! has strong output and in all other ways good.
> you can see the circuit on page 186, figure 7-11 in the manual.
>
> Ray F/KA3EKH

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