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  1. HP-Agilent-Keysight-Equipment
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PARTS IDENTIFICATION

 

Please Help to identify these parts the +/- supply is biased o whats? ANZAC MD- 824 RF mixer



I tested they work well to 1Ghz to 3.8 GHz the LO I put 2Ghz and rf I put 3.8 but I don't get the idea for the supply. Thank you for your wisdom
 

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While this is not the case for you, and now I cannot get to my Anzac catalog, but, I had an experience back in 1975. I ordered DBMs from MiniCircuits and was not pleased with the carrier suppression. This was for a product. I found if I placed a bias with a trimpot on the DC port, I could just about completely null out the carrier. 73 – Mike ?

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Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

848-245-9115

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From: [email protected] <[email protected]> On Behalf Of Francesco
Sent: Saturday, August 21, 2021 12:50 PM
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] PARTS IDENTIFICATION

?

Please Help to identify these parts the +/- supply is biased o whats? ANZAC MD- 824 RF mixer



I tested they work well to 1Ghz to 3.8 GHz the LO I put 2Ghz and rf I put 3.8 but I don't get the idea for the supply. Thank you for your wisdom

 

Hi Francesco, just in case this information is still useful to you or anyone else...
These assemblies (mixer plus bracket and two resistors) are from a Marconi X17653 Low-Band Receiver unit, part of the Radar Homing and Warning Receiver (RHWR) system in a Panavia Tornado aircraft.? I bought one of these units from Ebay recently and have been investigating it - the mixer bias supplies are +15V and -15V (connected to the resistors, not directly to the terminals on the mixer).? Thank you for the information about their frequency-range, I might do some more experiments with them.
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Best regards, Mike Haben

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