UHF question

[berniebgf Senior Member Find all posts View Profile Close berniebgf]

Was testing my UHF unit with my mate tonight and we had some interesting results we are trying to workout.

I have a Oricom UHF (80 channel) with a GME 6DB independent grounded Antenna (long white fibre glass thing), he had a GME unit (80 channel remote head) with a steel antenna with a curl in the middle (~2 foot) (not sure brand or spec's).

Trans and Receive within ~2KM was Good, but the further I got out my receiving dropped quickly but he could pick me up loud and clear up to almost 8KM.

So we are trying to work out if it is me transmitting a stronger signal or my unit not receiving well...

My thinking is that the Antenna Gain on my setup is better and that I am transmitting more power than him.....

Any advice?

Thanks

Bernie

[Guest Close Guest]

Your setup has higher gain than him and can therefore reach him but he can't reach you.

In basic terms, the longer your antenna, the further you can transmit on flat ground. But a shorter antenna is better suited to hilly terrain.

[rbert Lurker Find all posts View Profile Close rbert]

berniebgf
Have a look at this site, may help to answer your question

http://www.lakecomm.com.au/Antenna-Prop.html and another similar link
http://www.zcg.com.au/antenna-gain-explained.html

[berniebgf Senior Member Find all posts View Profile Close berniebgf]

Thanks for the response Guys, appreciate it.

I was aware of the different Characteristics of Antennas with respect to "focus" and "Gain", I just never appreciated (or witnessed) how dramatic the difference is! incredible.

If having the 6Db presents the same level of difference (Negatively) in the bush (hills) then I will definitely look at getting a 4Db shorted antenna (I have a screw base and can interchange) to swap in when up in the bush.

Bernie