Sad, they used to be the go-to pre-amp. Back in the day I I made a lot of HEO satellite contacts using them...

73, Joe kk0sd

-----Original Message----- From: Charles Rubenstein via AMSAT-BB [email protected] Sent: Friday, August 4, 2023 4:55 PM To: Joseph B. Fitzgerald [email protected] Cc: AMSAT-BB [email protected] Subject: [AMSAT-BB] Re: Advanced Receiver Research MSP144VDG-160 mast mount cover removal question

Joe:

I just bought a VHF and UHF one of those, and neither worked. I talked to ARR and they use a big rubber mallet to get the covers off. So, I sent them off to them to be fixed. I don't think mine have the BiasTee either.

Charlie KB8CR

On Aug 4, 2023, at 5:17 PM, Joseph B. Fitzgerald via AMSAT-BB [email protected] wrote:

I have an Advanced Receiver Research MSP144VDG-160 mast mount preamp, but it does not seem to be configured to be powered via the coax. I removed the cover screws, but the cover does not seem to want to come off easily. Does anyone know if there is some trick to release some sort of latch or something so I can get inside and add choke and/or capacitor? Or should I just pull it off more "enthusiastically"?

de KM1P Joe

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