Re: Want: GLB Receiver Pre-selector (please) Yes, the box and board Joe sent the picture in is one of the GLB Preamplifier beasts I'm looking for.
I've seen this same and similar circuit appear in a number of receivers, pre-amplifiers, pre-selector circuits going way back to early EF-Johnson receivers. I would even guess they (EFJ Comp.) probably were not the inventors or first users of this almost exact "front-end" circuit layout. Spectrum (RIP) and a few other companies did offer the GLB and and similar variant units in some of their products. Thank you to those who have already replied... no pre-amplifiers in hand yet, but I'm still looking and answering a few emails to fish a GLB out of the wood-work. Doesn't matter what band they are on, or condition (even in pieces). thanks much... cheers, skipp skipp025 at yahoo.com > Joe <k1ike_m...@...> wrote: > > It's definitely a GLB preselector, model P-147.49Mhz, Serial #7110. > That's what it says on the case. This type of preselector was seen in > several pieces of equipment. One that comes to mind was an option on > the SCR-77 Spectrum Repeater. I have one in service right now, and I > suspect Spectrum might have gotten them from GLB. The attached photo > shows it sitting on top of the repeater. > > Scott Zimmerman wrote: > > > 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. > > > > Yep they LOOK like them, but the're not. This is a typical looking GLB > > preselector preamp. > > > > Scott > > > > Scott Zimmerman > > Amateur Radio Call N3XCC > > 474 Barnett Rd > > Boswell, PA 15531 >
