Thread: TYT Mobile Radio TH-9000 50W UHF 400-490Mhz

Looks good

I have used a similar radio (Alinco) for many years. These are great because you can program in not just the standard UHF channels; but some emergency channels as well (just set them up so you can listen' but not broadcast).

Someone will be along shortly to point out that 50w of output is illegal on Australian CB channels though....

I was waiting for the 50 watt is illegal thing. Stupid question at 50 watts im guessing your transmit range would be awesome maybe 50 km.

Originally Posted by bussy1963

I was waiting for the 50 watt is illegal thing. Stupid question at 50 watts im guessing your transmit range would be awesome maybe 50 km.

Only statement I heard that made sense once was...

"Massive transmit power is great. But not much use if you cant hear the reply"

I'm assuming it means - you'll never know if someone heard you - unless youre transmitting your location and someone rocks up...

I'm guessing that this unit is designed for commercial use or the 432 Mhz amateur band.
AKAIK it is now illegal to own a transceiver capable of transmitting on frequencies you are not licensed to transmit on, regardless of the power involved.
As to range, I got good results up to 25Km on the CSR with an out of the box GE Electrophone and this aerial, all 100mm of it.



size isn't everything.

Deano

I think you're on the right track there Deano.

I'm not sure of the exact wording of the act but if what you suggest is true then most people's Icom, GME and Vertex units would be illegal as they are all based on commercial units and are capable of transmitting on frequencies well outside the CB allocation e.g. 420MHz to 520MHz.

I think the problem is with many of the units these days being capable of keyboard programming for frequencies outside the appropriate band. I think, and I could well be wrong as I haven't found the relevant para in the act, as long as the unit is programming locked or receive only out of band, you're OK . That is, it can only be programmed via software and not the hardware, then it may still be legal. It is still legal to listen on most frequencies, even if you're not licensed to transmit on them.

As for transmit power, both you and Tombie make a good point, transmit power is pointless if the receiver isn't up to scratch. Having said that, I think the BIG transmitter in the Apollo spacecraft all those years ago was a dazzling 4 watts. Size doesn't matter but a good line of sight and appropriate antennae are legend. Satellite transmitters are a lot less powerful than regular FTA VHF/UHF TV transmitters, and they are further away, but they have (mostly) an excellent L.O.S. to their highly focused receiving antennae.

Cheers,
Iain