Night Gary , glad to have you here , look forward to chattin, and as for UHF I'd stick with Uniden.Originally Posted by lawnbowls
BTW were you the one on the phone to president for 3 hours. LOL
Night Gary , glad to have you here , look forward to chattin, and as for UHF I'd stick with Uniden.
BTW were you the one on the phone to president for 3 hours. LOL
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Good night Gary.
3db, 6db etc refers to the aerials gain, which basically means it's transmit/recieve pattern. See the image below, it explains it a lot better than I can.
40 channel UHF radios have their channels evenly spaced within a certain frequency range. The newer 80 channel units operate within the same frequency range but have the extra 40 channels in between the original 40 channels, I hope that makes sense.
As a user it means you have a much better chance of finding a clear channel.
Just to confuse you even more, on the current 40 channel UHF band channels 1 - 8 are repeater channels, so you only use these when you want to access a repeater. A repeater is a base station that picks up your signal, amplifies it and retransmits it to increase the range of transmission. BUT, when you use a repeater you utilize the duplex feature on your UHF, where it automatically transmits on say channel 1, but recieves on channel 31. 2 & 32, 3 & 33 etc. So you should NEVER choose channels 30 - 38 for general transmission.
So now your 40 channel UHF only actually has 24 general transmission (or simplex) channels. Of those 24 channels building sites, trucking companies, traffic controllers etc all have their chosen channels and it starts to get a bit crowded. The benefits of an extra 40 channels is obvious. The second pic should help explain how duplex and repeaters work. If you click on the attached thumbnails it will enlarge them.
Have I thoroughly confused you yet?
Tony
Last edited by YNOT; 25th January 2011 at 11:35 PM.
Clunk (29th January 2011), Finly Owner (26th January 2011), lawnbowls (27th January 2011)
G'Day Gary, welcome to the forum mate.
Great start with over 70 posts on your intro...
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Hi Gary, Welcome 2 the forum mate, here is a link to your question, hope it helps
http://www.nissanpatrol.com.au/forum...ghlight=avatar
Any problems just yell out and someone will help you out.
Cheers
Todd
Time is never wasted when your wasted all the time
WARNING: Towballs used for recoveries can, and do kill people and damage property.
lawnbowls (27th January 2011)
Damn what an intro thread. Welcome to the forum Gary. Good to have another local onboard
In the words of a Dhuck "QUACK".
Welcome Gary from the apparent oldest member (although some might not be telling their Age).
Have not taken up Lawn Bowls yet as I believe it is a dangerous Sport. Something to do with having the highest death rate whilst participating. LOL
All jokes aside congrats on your intro and enjoy
Last edited by Bob; 26th January 2011 at 09:29 AM.
Iknew what it did, but not having my set in front of me I couldn't instantly recall Duplex/simplex as I hardly use it anymore.
Nice discussion and I have saved your attachments too.You're a natural at explaining this easily. I know this stuff and still couldn't say it as well as you. (but I didn't know out on 1 in on 30 stuff)
Getting Older Is Unavoidable, Growing Up Is Optional!
YNOT (26th January 2011)
Wrong guy .... that was the other new guy.....
Hi Bob, Bendigo ehhh .... I was born there in Golden Square way back when ....
Hey Dhuck..... I live in Munruben .... not far from Marsden ... thanks for the welcome
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