i have a manual for this D31BMT which is like new and it states that tx crystals are transmit fo=fc/12 and the recieve is a little more difficult: reciever frequency calculations fc= carrier frequency (25-50) fo= oscillator crystal freq. (24.545 - 49.545 mhz) f1= IF frequency (0.455 mhz) ftr= trap f...

i have done many of these radios , the symtoms you are describing sounds like somehow inadvertantly the bandsplit was changed in the programming process. cloning a radio will change the bandsplit of the clonee, or somehow the bandsplit could have been changed from the menu. verify that you are using...

very simple solution to all of this is to jumper pin# 35 to pin# 36 on the back of the vip connector. just make a 2" jumper wire using the proper pintips, crimp properly, and insert. i have done over 1000 of these and the only problem is not properly crimping, so the pin isn't uniform diameter ...

good day: i believe you can order a service manual for this equipment by contacting parts id then giving them the model # . i would be interested in possibly working on a purchase, once you have decided on price, and know what you have thank you

i have found out that the big "m" has kits available for the gm300 in either uhf or vhf which is interchangeable with the maxtrac and naturally the maxtrac is interchangeable with the maratrac
vhf = hln9575 uhf= hln9576

hi: does anyone know if the duplex generators usually drift around or can this be stablized or locked mine is useable but keeps you very busy keeping it on channel thanks warbirdf4

hi folks, just looking for any information on narrowbanding the maratrac uhf or vhf recievers. i know that com spec has several kits however they have never done a maratrac. the first mixer in the uhf maratrac produces a 45.1 first if signal which is amplified before it passes through a 4 pole cryst...