View Full Version : New super compact UHF CB

4th April 2011, 07:24 AM
Went for a bit of a wander into a CB radio place the other day and asked what the smallest radio is they had- and they showed me this: http://www.gme.net.au/products/radio-communications/uhf-477mhz-cb-radios/TX3100

It is really tiny- it easily fits into the lidded section under the radio (MY04)- although that area is a stacker on non poverty pack models. It also fits into the lidded section on top of the dash. Looks very nice- but has some reasonable sized heat sinks on the rear of the radio. Cheapest price I have seen is around $260.

4th April 2011, 08:19 AM
Yeah i saw a similar unit if not smaller at Opposite Lock today.

These things just keep getting smaller and smaller!

4th April 2011, 08:59 AM
Here's another option... It's what I have fitted in my Forester. It too is super compact. http://www.gme.net.au/products/radio-communications/uhf-477mhz-cb-radios/TX3340 (http://www.gme.net.au/products/radio-communications/uhf-477mhz-cb-radios/TX3340)I have mine mounted by cable tying it to the side of the TCM and running the microphone through near the steering collumn, and mounting it on the dash, avoiding me losing any 'pockets' and neatens up the cabin.



5th April 2011, 03:18 AM
I bought a couple of Dick Smith cheapies for about $50 a pair with a supposed range of 3km, more like 300m but what is the range on these, I remember when CB's were popular 30 odd yrs ago they were similarly priced to these for a SSB with a reasonable range 5-10km, what makes these so good.

5th April 2011, 05:32 AM
Biggest contributor to range is the aerial. Then power. Of course, the frequency makes a big difference as well. With HF CB (27MHz), you are allowed 12w on sideband in Oz. Due to the wavelength at this fequency, you can get a bigger range due to the ability of the signal to bend around obstacles (like hills). In addition, you can get skip, where it is quite possible if conditions are favourable to have a conversation with someone in Perth from FNQ- as I have done. I have also heard (faintly) Alaska, but they could not hear me. The down side to HF CB is poor signal quality. With UHF, you are restricted to 5W and the signal will not skip and does not really bend around obstacles. But the signal quality is superior. With limitations to range due to power and wave length issue, UHF does have repeater stations spread around the country's populated areas.

So, if you want a UHF with some range, get a 5w unit, external aerial mounted as high as possible (preferably ground independant) and stay on flat land. I would imagine your DSE hand helds are at best 1W and obviously have a tiny aerial.

5th April 2011, 02:33 PM
Hah, yeah I remember talking to people all over the world with my Sideband unit back in 77/78, Japan, USA, over east, yeah just piddly little units with a 2" areal but great for convoy work which is all I really wanted.
Thanks for clearing that up, when I go looking for Lasseters reef I'll get a better one lol.

6th April 2011, 07:02 AM
Hi Joel,

I have had the GME TX3100 for nearly a year now and can't fault it.

The RFI glass mount antenna is also a surprise - i can hit CH5 (55KM away)and CH7 (95KM away) repeaters from from my home QTH and whilst mobile around Melbourne South Eastern suburbs and Mornington Peninsula.


6th April 2011, 08:45 AM
Looks like a very neat set up you've got there onebob!



7th April 2011, 12:36 AM
The only problem with such small radios is that us oldies can't read them anymore! If only they made them that small with VERY LARGE LETTERING:biggrin: