Hi Louie,
Welcome to the group. I have one of the Gilfer Associates GAR-7 digital displays. I put a new folder in the Files section with some GAR-7 pictures, from eBay, in it. The picture of the rear of the FRG-7 shows the missing red label that has fallen off your FRG-7.
The counters were not actually made by Gilfer. They were made by e-tek. Their main claim to fame are the FR-4 digital displays for the Drake R-4 series of receivers. I have added a picture to the new GAR-7 folder.
The GAR-7 is a simple offset counter. It counts the VFO frequency of 2.445 - 3.445 MHz and subtracts the IF frequency of .455 MHz. This indicates 2.0000 to 3.0000 Mhz on the display. Because the GAR-7 only shows the last 4 digits you see 000.0 to 999.9 on the display. The accuracy is dependent on the FRG-7's 1 MHz crystal. I don't see a trimmer for zeroing the 1 MHz crystal, in the schematic, but someone may have addressed this problem in the old messages section.
A number of suitable 4 digit offset counters have been offered over the years. Probably the smallest with four 1/2" red LED's is the S & S Engineering PC1. It measures 5 1/2 by 4 by 2 1`/2 inches and has DIP switches for setting the offset required. S & S is gone but they go for a song on eBay. I'll try to find a picture for the Gilfer folder.
73
Roger VE7LB group owner
