I have read the recent posts that indicate the Maxtrac receivers are usable on 900 even if it started out as an 800 model. Are the transmitters usable at all? Is it just a matter of scaling LC ratios in the various stages or is there another limitation? The unit is equipped with "Talkaround".
David, WB1CMG
Mont Vernon, NH
800 MHz D45 Maxtrac for 900 mobile use
Moderator: Queue Moderator
David, seveal folks have modified the 800 MHz Maxtrac for use as a Rx unit for repeater service. And, only the "Talkaround" 800 model is capable of being able to Rx in the low part of the 900 amateur band. Don't believe anyone has used it as a user radio for 900 amateur - the Tx VCO and PA run out of steam for 900 use.
Regards, Hugh KF6HHS
Regards, Hugh KF6HHS
My modification of commercial equipment experiences are mainly in the VHF region. Also, the equipment I am used to working on was quite dated by comparison. Thanks for the advice. I guess I will hang on to it for receive duties anyway. I am just surprised that the Tx chain is that close. Of course, if this is contains a potted module hybrid then that makes sense.
David, WB1CMG
David, WB1CMG
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- What radios do you own?: Astro Specta, MT1500, HT1550LS
We've been playing with changing the origional 860 bandpass of the filters iin the 800's using paper and copper wire in the holes of the filters. Ive got one working as a commercial receiver right now. The loss is a tad higher but also more selective. Only real problem is that the 800 radios are not as stable as the 900 radios and converting to narrow band can give you a headache if the temperature changes to much where the radio resides.