I am starting this thread so folks can post what 'they' think is a good value back-up transceiver. I will start out with these suggestions but first, why have a second or third transceiver.
In a nutshell, having a back-up radio is just another version of, "one is none, two is one". Obviously look for one that is complete, e.g., power cord, mic, etc. and one that has come from a non-smoker. Nicotine tar really screws with connectors in the mic and to a lesser degree with the circuit board.
Some sellers offer additional gear with the radio which adds to the radios value to a degree. It is kind of like buying a house with a swimming pool. Some people want a pool, many do not.
Icom 718 - I have seen the range from $375- to $600-. The sweet spot is, $400- to $500- range.
Icom 735 - I have seen these that range from $225- to $350-. The sweet spot is, $250- to $300- range.
Icom 746* - I have seen these that range from $485- to $650-. The sweet spot is, $525 to $600- range.
Icom 746Pro* I have seen these that range from $550- to $750-. The sweet spot is, $600- to $700- range.
Kenwood 590s - I have seen these that ranged from $525- to $800. The sweet spot is $500- to $600- range.
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IC 746 vs. IC 746ProIf you buy a radio online, stay with some valued classified sites like, eham.net and QRZ.com. There are others. Based on what I have heard from hams who have bought transceivers on ebay, it is a 50/50 shot. If you do buy on ebay, vet the seller and ask a lot of questions.
The best way to buy a used transceiver is, buy from a ham. A ham preferable in your or a neighboring club. The reason being is that a 1:1 transfer between local hams takes most of the risk out of the transaction. No ham wants to get a bad name as it is a small community for sure.
Not to be morbid however, you will most likely get your best deal from the death of a ham (Silent key). Typically, a friend of the silent key or their club, will liquidate the former hams equipment. Speaking from experience here, most widows want nothing to do with their former husbands radio equipment (Yes, I am being sexist here) and are just happy it gets liquidated.
What are your favorite back-up transceivers?