Doug, I have a complete GE microfiche file, but there is no listing for a "4ERC-70-A3" package. There are many listings that begin with "4ER" but none with a "C" in the 4th place. Please confirm the model number. Perhaps you can find some numbers stamped on the edge of circuit boards. Any additional info will be very helpful in identifying your unit.
73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Davies, Doug A FOR:EX Sent: Wednesday, October 17, 2007 2:17 PM To: Repeater-Builder Subject: [Repeater-Builder] OT: Air Band Receiver Off topic but I know there are some aviation techs on this list. I'm looking for a manual, or at a minimum the alignment instructions, for a General Electric air band VHF AM receiver Model # 4ERC-70-A3. I have one I want to change frequencies on and need the crystal calculation formula and the tune-up instructions. It looks a lot like one of the old GE ER-41-C VHF FM receivers from the Mastr Pro days. Thanks for any help and info. Doug VE7DRF
