Hello Joe First of all, the MRF901 is a low noise input transistor that was made by Motorola and is probably the transistor in your assembly.
Next, the brass tube helical resonators in your assembly look to me to be as made by ACS / Kendecom and as used in their repeater receivers. And, in that application, ACS used and possibly still does use two MRF901's in their receiver front ends. Scott, N6NXI ----- Original Message ----- From: Joe To: [email protected] ; skipp025 Sent: Friday, December 19, 2008 10:40 AM Subject: Re: [Repeater-Builder] Want: GLB Receiver Pre-selector (please) Ahh, I have just the beast for you, but the price just doubled now that I know you need it (in true Dayton spirit!). He's a photo of my very valuable treasure. I think it's 2 meters, the case top is missing but there is a piece of metal that serves as a cover. It is disassembled and I don't know if it works. The device is marked Motorola MRF901. In true eBay spirit, this is in mint condition, never been used...... (tongue in cheek, laughing). 73, Joe K1ike skipp025 wrote: > Hello Sailors, > > Anyone have a GLB Receiver Filter - Pre-selector - preamplifier > they'd like to sell or trade away? Sounds silly but the frequency > range is not important. I'm trying to measure the 3rd order > performance and a possible Phempt (fet) retrofit. Of course I/we'll > share the results... > > Please reply direct > > thanks a mucho > skipp > > skipp025 at yahoo.com > [email protected] > ------------------------------------------------------------------------------
