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Car Forum / Australian Car Forums / 4x4 Cars (Australian group) / April 2004UH-007
gday all. just wondering if anyone knows any mods for the UH007 or any websites that may have some. What do you think about this radio? Any good? Thinking of buying one. cheers, Kev > gday all. > [quoted text clipped - 6 lines] > cheers, > Kev And, exactly what "mods" are you thinking of here?? You're not playing with the good old "10-4 good buddy" 27 MHz CB's of yester-year here where you could "put in a few extra's" or "wind up the power a little". Pretty much what you get is what you get...... Especially as UHF CB has commercial allocations above and below the band, making it rather risky to operate (illegally) on any "extra channels".... > > gday all. > > [quoted text clipped - 14 lines] > commercial allocations above and below the band, making it rather risky to > operate (illegally) on any "extra channels".... ah right... yeah just wondering if i can boost up the power output a little.. something along the lines of adding a few more transistors or whatever. > > > gday all. > > > [quoted text clipped - 20 lines] > little.. something along the lines of adding a few more transistors or > whatever. Apart from the legal issues, which I'm sure you've already considered ;-) It would probably be easier and cheaper to just get yourself a 2nd hand commercial radio programmed to UHF CB, or a UHF linear. By the time you muck around modifying the set, and then suffer the extra superious emissions that will cause, it's not worth it. I *think* the 007 used an RF amp module rather than discrete transistors (could be wrong here - don't have my schematics handy), and whilst there *may* be higher power amp modules that, in theory, could be used, the cost and above associated problems make it inadvisable, to say the least. (having said that, no doubt there is someone on here that has done it and can proved me wrong - again). And no, you can't just 'add transistors' to boost the power. I still think for the cost you are far better to get yourself a 2nd hand commercial set - better performance, better specs, better features. Or, alternatively, do as some of us more "law abiding" operators do and enjoy the challenge of using better antenna systems with the standard 5 watts!!!!! (yeah, yeah, bring on the flame war!!! ;-) ) about the max we got out of my old 001(007 without the signal meter) was 9-10 watts but it didn't last very long at that, few months at most Kev > > > > gday all. > > > > [quoted text clipped - 41 lines] > the challenge of using better antenna systems with the standard 5 watts!!!!! > (yeah, yeah, bring on the flame war!!! ;-) ) I always take UHF milk camping. It lasts longer in the esky. > > > > gday all. > > > > [quoted text clipped - 41 lines] > the challenge of using better antenna systems with the standard 5 watts!!!!! > (yeah, yeah, bring on the flame war!!! ;-) ) no worries mate, thanks for the input >ah right... yeah just wondering if i can boost up the power output a >little.. something along the lines of adding a few more transistors or >whatever. Designing a power amplifier for 470MHz is _far_ from trivial. More power (especially at UHF, which is line of sight) is of limited value however a really good antenna would probably provide the extra efficiency you seek - and don't forget really good cable to feed the really good antenna otherwise you'll loose heaps of your power before it reaches the antenna. A Radio Amateur friend of mine often talks to the UK (from Victoria) on HF using 10mW (0.01W). Mind you he does have an antenna system 195 feet tall :) Mike Harding Pretty useless dribble: Have seen a few ex police 25 watt UHF radios re-jigged for commericial 40 channel UHF frequencies. Which is great and all, and you can talk to some bloke who is 200 klicks away. But then how is he gonna reply? [Tin can setup's are the way to go. Easily modified for any distance as long as their both in a pretty much a line-of-sight, just by adding more string. And just think of the security on these things - no other parties can interrupt or listen in if they don't have a vital piece of equipment, the tin can.] > A Radio Amateur friend of mine often talks to the UK (from > Victoria) on HF using 10mW (0.01W). Mind you he does > have an antenna system 195 feet tall :) |
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