AM vs UHF

Submitted: Thursday, Mar 18, 2004 at 23:01
ThreadID: 11376 Views:1825 Replies:4 FollowUps:7
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hi all, just wondering if anyone has the pros and cons of both types of radios as i am getting a UHF radio tx3400 soon. i know truckies still like to use AM . do they have longer range on the open road?? they also use UHF radios . they are clearer in sound right?UHF's better in the bush right? some thoughts on this would be great

ta jason.
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Reply By: robb - Thursday, Mar 18, 2004 at 23:34

Thursday, Mar 18, 2004 at 23:34
Hi Jason, I am sure there is plenty in the archives about this subject but I will give you my opinion... UHF is way and above superior for car to car communication. Its clearer and the radios are much more sophisticated with selcall etc etc. Dont get AM and HF confused, they are very different beasts.. HF for looooooooooong distance communications eg, VKS737 and RFDS... UHF can also be used over a fair distance but only with the use of a repeater... TX3400 is not a bad unit. You could maybe also look for an ex-commercial radio that has been refurbished. More power and built very tough. Some names to look out forn are Tait, Philips, Kenwood, Motorola etc etc. Hope this helps.

Cheers
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Follow Up By: Member - Bob L - Friday, Mar 19, 2004 at 20:51

Friday, Mar 19, 2004 at 20:51
Yes Robb.
More power and illegal.
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Follow Up By: robb - Friday, Mar 19, 2004 at 21:02

Friday, Mar 19, 2004 at 21:02
Hey Bob, thanks for the heads up... It seems that the stores that sell them should be informed as to the legality of the radios... I bought mine from a very reputable dealer here in Sydney and asked the question about legality, he told me that it was totally legal... Oh well, I dont use it for evil purposes so I guess you would have to be extremely unlucky to get into trouble using one... Are there CB police?
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Follow Up By: Member - Bob L - Friday, Mar 19, 2004 at 21:35

Friday, Mar 19, 2004 at 21:35
40 Channel uhf CB is restricted to a maximum of 5watts at the antenna feed point.
The ACA (Australian Communications Authority ) has the power to seize /fine whatever and I know they threatened to came down pretty heavy on users of mobile phone boosters(thats another story). With CB I think they are just too busy frying other fish.
Most commercial units put out 25 watts which would not be that easy to detect on air so you should be safe.

Cheers
Bob L
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Reply By: Truckster (Vic) - Thursday, Mar 18, 2004 at 23:36

Thursday, Mar 18, 2004 at 23:36
"i know truckies still like to use AM ."

they do?

Stick with UHF..
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Follow Up By: WhisperingJack - Friday, Mar 19, 2004 at 11:03

Friday, Mar 19, 2004 at 11:03
yeb,they sure do....but not alot.
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Follow Up By: WhisperingJack - Friday, Mar 19, 2004 at 11:04

Friday, Mar 19, 2004 at 11:04
yeb,they sure do....but not alot. prefer uhf
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Follow Up By: Truckster (Vic) - Friday, Mar 19, 2004 at 21:44

Friday, Mar 19, 2004 at 21:44
never used one in the last 6 yrs I went up the road....
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Follow Up By: WhisperingJack - Monday, Mar 22, 2004 at 07:58

Monday, Mar 22, 2004 at 07:58
Still have mine running,along with UHF,nice just to have both going.still useful to have.
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Reply By: Mad Dog Morgan (Geelong) - Friday, Mar 19, 2004 at 01:10

Friday, Mar 19, 2004 at 01:10
27 megs being part of the HF spectrum is more susceptible to noise both atmospheric and man made though atmospherics is not bad on 27 megs. Ignition noise though can be a problem and make weak signals difficult to understand. Truckies are all moving to UHF with most of them there already. All things being equal yes 27 megs AM will have a longer ground signal but really UHF FM is superior for the clear signal so yes rest assured your purchase decision is correct.
AnswerID: 51001

Reply By: darbi - Saturday, Mar 20, 2004 at 09:58

Saturday, Mar 20, 2004 at 09:58
there are lots of pros & cons to each. I use radio comms alot! To give you my perspective, on my next big trip, I am going to take UHF for car-car, and 100 watt HF SSB (amateur) for emergency and recreation. 27MHZ AM can give you good (but unreliable) country-wide comms, but is stuck in a part of the HF band that is useless at night; I'm not bothering with it.

g'luck
AnswerID: 51138

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