Best regards to all: I am very grateful to anyone who can give me a hand with this issue: I have a TAIT repeater (two independent modules) which was in service on a commercial frequency. But it was presented to us and we did reprogram it at frequencies for Amateur Radio but from there it has been working badly, it crashes. The technician says that it is something with program code in the mathematical formula for frequency and that he does not know what else to do. It is a fairly old device, it uses EPROM memory to program each module. For the rest it is good and endures other good years. I request very cordially who has the program or know how it is done explain me to better illustrate the technician and he does not have expertise in the brand of these teams. (it has the memory programmer) The data areTAIT - RECEIVER T835-20TAIT - TRANSCIVER T-836-20 OPERATING FREQUENCIES Tx: 147.030 MHz Rx: 147.630 MHz Tone Tx and Rx = 85.4 Hz Greetings from ColombiaGracias TAIT-1.jpeg [55.07kb] TAIT-2.jpeg [125.60kb]