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Unknown RF Detector

 

Somewhere in my scrounging I came across this RF detector. I thought it was bad, maybe was told this. Anyway under careful scrutiny with my VOM (diode action), DVM (resistance) and L/C meter I have determined the following configuration and values for this device. Is anyone familiar with such detectors? Is it u8sful for microwave or is it a video detector of some sort? I am pretty sure of the diode polarity.

SMA RF Detector low rez.jpg

saipan59
 

What type of connectors are on the ends? Looks like 'UHF' video connectors.
My guess is NOT microwave, but more likely TV stuff.

Pete
 

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SMA in and out - no Video scrap - should be good for microwave

Am 25.11.2018 um 22:00 schrieb RFI-EMI-GUY:

Somewhere in my scrounging I came across this RF detector. I thought it was bad, maybe was told this. Anyway under careful scrutiny with my VOM (diode action), DVM (resistance) and L/C meter I have determined the following configuration and values for this device. Is anyone familiar with such detectors? Is it u8sful for microwave or is it a video detector of some sort? I am pretty sure of the diode polarity.

 

That appears to be either a simple microwave mixer, or an SRD multiplier/comb generator, not a detector. A detector would not have both ends of the diode hooked to low impedance terminations. You may be able to tell which it is by measuring the forward voltage drop of the diode, but it could be risky - you need enough test current to lift the resistive end to tell if its a Shottky around 400-500 mV (mixer) or about 700 mV silicon PN junction (SRD), without overdoing it and damaging the diode.

Ed
 

Using my VOM in the X1 scale (1.5V OC) to forward bias, I see something like 968 mv.
 

If that's near the true Vf, then I'd say it's an SRD. Be careful in using VOMs to test RF components - it's easy to burn stuff out with excessive test current. SRDs are pretty tough, and Schottkys, not so much.

Ed
 

SMA-F and SMA-M
 

So this brings up the question as to the "Gozinta and Gozouta". I am assuming the inductor side is the output and the resistive side is the input. Correct? What then would be the recommended drive power and operation frequency?
 

What brings up a question? no prior post included

On 11/25/2018 6:08 PM, RFI-EMI-GUY wrote:
So this brings up the question as to the "Gozinta and Gozouta". I am assuming the inductor side is the output and the resistive side is the input. Correct? What then would be the recommended drive power and operation frequency?
--
Dave
Manuals@...
www.ArtekManuals.com
 

Looks like it could be a HP 33003A SRD comb generator. In which case the inductive?(male) end is the input and female output. Needs about 500mW of drive?typically 50 or 100MHz. ?

Robert G8RPI

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