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Unwired UFR650 (14 Channels) 2-Way Radio Questions & Answers
1 Answer
What's the channel frequencies for a common 22 channel motorola 2 way vhf radio?
Not sure what you want.....VHF band ius approximatly 130mhz to 175 mhz..... in that VHF band there is a commercial VHF band aprox. 155 mhz to 175...... the amateur radio vhf band is aprox. 135 to 150mhz.
With amateur radio, any freq in that range can be used...... with commercial radio the FCC cangive a company any freq. in that range also.
If you are looking for FRS/GMRS frequencies they are UHF freqs not VHF.
So I'm not sure exactly what you want......sounds like you might want to program in FRS freqs into an Icom amateur radio. If thats the case you will need an Icom that will do UHF freqs.
Unwired UFR650...
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Answered
on Oct 12, 2007
1 Answer
What is the frequency for UFR650?
these are FRS radios, and use only the 14 FRS channels within the GMRS band. they will not operate on the other GMRS channels in the GMRS band.
FRS Channel Frequency Assignments:
Channel 1: 462.5625mhz
Channel 2: 462.5875mhz
Channel 3: 462.6125mhz
Channel 4: 462.6375mhz
Channel 5: 462.6625mhz
Channel 6: 462.6875mhz
Channel 7: 462.7125mhz
Channel 8: 467.5625mhz
Channel 9: 467.5875mhz
Channel 10: 467.6125mhz
Channel 11: 467.6375mhz
Channel 12: 467.6625mhz
Channel 13: 467.6875mhz
Channel 14: 467.7125mhz
Unwired UFR650...
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Answered
on Jun 28, 2006
1 Answer
DW505 type 3: What is the resistance specification for armature opposing pole pairs? Also, isn't each pair supposed to be isolated from the other?
Measuring across the commutator opposites is a rough check - if each pair has the same resistance it is probably good but even then there are no guarantees. I have never seen the armature resistance stated for any motor though that doesn't mean such figures don't exist.
It would seem logical that each pair should be isolated but that generally is not how the armature is wired and each commutator segment is the termination of two coils.
In reality there is only three ways to test an armature - either build it into a motor and see if it performs ok, use an automated motor fault analysis machine or one of the dedicated armature testers such as an armature growler.
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Answered
on Aug 01, 2020
1 Answer
Need a schematic for a victrola radio model vta 750
The fashion for nostalgia radio with a modern sound has brought about a clutch of models from only a few manufacturers.
I have only encountered one such that was basically an in-house cabinet with bought in internals, the quality of which was probably reflected in the price and as this was from the lower price bracket the internals were from different sources and badly matched.
I know of no reason to assume other models would be substantially different because although popular they haven't sold in the high numbers that would justify purpose built internals and so the chances are an experienced audio engineer would probably recognise the circuit board as being from a popular hi-fi and be able to provide you with details.
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Answered
on Jun 22, 2020
1 Answer
These radios are great but why put talkback on a radio when itll only work on am..we use fm mainly in the uk..is there anyway of modding it so itll work on fm please
The short answer is no -- the difference between AM and FM is too great though some CB radios were made dual mode, like the President Veep I used to own.
Some CBs that found the way into Britain were powerful sidebanders that offered similar capabilities to unlicensed CB-ers to that official radio hams had to sit exams to enjoy. Some radio hams found it cheaper to have those top-line CBs modified for use on the 11 metre amateur band.
It would be no help to you to obtain a standard FM CB as when the UK was forced to legalise CB radio under the Treaty of Rome, they legalised it at a different frequency as the American frequency was already allocated to radio control, bleepers and other things. Special CB sets were manufactured for the UK market.
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Answered
on Jun 15, 2020
7 Answers
Motorola D700 (Ex Dolphin Tetra) Radio
HI.... yes ....it is possible to program them in DMO, this is done in the RSS,.... so I am advised directly from inside Motorola .... but a copy of the RSS is just not available.... ... if fact Motorola seems to officially deny the D700 ever existed ... good luck in finding a solution.
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Answered
on Jun 12, 2020
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