Communications Equipment

Hi All, With the expectant 40 channel UHF units becoming illegal after July 2017 despite ACMA issuing proposed changes to that ==> CB changes it is reasonable to assume that even if they opt for extension eventually the 40 channels units will become invalid.... With that in mind I'm currently looking at replacing mine because all my mates with 80 ch units whinge that they can't hear me properly as well as looking for better options then the Uniden 015SX provides. What is really amazing that that is still available for sale on E-bay from AU ==> ( Uniden UH015SX ) sellers despite being illegal to do so since 2012. With that in mind what are my opt…

Somebody had to start a thread on HF radios. lol I've got a Codan HF NGT AR radio and love it. Hooked up with VKS 737 and HF tel. Thanks to the VKS bases in Meekatharra and Adelaide. Top service, top crew. I've been able to get through first time, every time. Take care out there. Rossco

When purchasing an antenna, you will hear terms of 3db, 6db, 4.15dbi, 2.15 dbi, 9db, 8.1 etc. Some manufacturers use db other use dbi (because it looks better) Db - refers to the gain compared to a ¼ wave roof mounted antenna. Dbi – refers to the theriacal gain of an antenna in a free space vacuum. To compare antennas, take 2.15 of a dbi Antenna. E.g. – an 8.1dbi antenna = 6 db gain antenna. What does gain do? An antenna with a gain of 3 dB gain, means that the Transmitted (radiated) power is 3 dB higher (twice as much) – gain is logarithmic. E.g. A uhf CB is transmitting 5 watts into a 3 db gain antenna; therefore the radiated power is 10 watts A uhf CB i…

With brake controllers and other sh@t taking up room was thinking of getting a good handheld uhf. Can you hook up a hand held to a normal uhf antenna for more range. If so do they work as good. If not back to the drawing board.

Hi Folks, I have a GME 4705 and it is just that bit too high for my garage. I was wondering if I could trim a bit off the top and reduce the height. BUT if I do this I'm afraid it will detune it and make it pretty crap (not that it is overly good anyway). Otherwise I need a really heavy duty antenna that is between 4.5 and 6db and 700-1000mm high. Need to be used for a mix of flat and hilly driving (mostly hills). Cheers,

Can we have a forum for communication issues