Radio Gurus - Help

Hi Steve

The cable length doesn't change the frequency , and should have also no effect unless the antenna is faulty and badly off tune which creates a high Vswr that the cable may interact with.

isnt that idea a throwback from the 27mhz radios?

Yep, I read that wrong. I thought we were were talking UHF where the cable length does effect freq.

Sorry to all, I'll read better next time rather than just post away.

With cell the only cable issue is loss caused by a to long cable. Any over ten metres will effect reception. That I can assure you and can post the test result when needed. Also we get a lot of these issues up in communities north of Broome

Again sorry I messed that up

db gain has nothing to do with UHF or VHF or HF for that matter ..
it is purely a measure of ratio of the gain of an antenna over a basis value.
There are different measurements used like dbi etc which normalises the ratio
to a specific type of antenna.

ANY antenna in ANY frequency range may be specified with a certain signal gain in db. Higher gain usually means more directional and requires you to know where the nearest receiver/sender is located roughly and needs more line of sight, although other factors come into play. Not always is a higher gain antenna a better option especially not for receivers unless you can really aim at the source like your TV antennas, which is an example of a directional antenna (yagi). Also of relevance is the polarisation of the signal , vertical or horizontal, this also depends on the source.

good luck
gmd

gmd is on the ball LES.

So,....... db's ain't db's Sol.

gmd pps is spot on,it is a pity some of the stores selling this gear know less than the buyers but that does not stop some of them trying to baffle people with b......t,some of the crap members of the public ,who rely on the correct info get told is criminal.I have seen and heard some fairy tales over the years,my advice is deal with people who make their living out of selling and installing radios and ask these people questions,most will gladly let you know.
(I do not have anything to do with the sale or installation of radio gear but have been an Amateur radio operator since 1993. Cheers Snake.

Yes, agreed, spot on.

MMM these guys from there disagree

and being 2 of them maes it sharks

if you want to be pedantic it would be Shark's

Hi Dennis,
Remember that today is Friday, I'm not so pedantic during the week.

Cheers

Disco.

Hi Dennis
Just a quick off subject one ,if you work at Shark Bay Salt you will probally know the brother and sister inlaw Steve and Tracey.Say g,day if you do.
Cheers Coolup

I am just visiting the son who works at Shark Bay Salt.
I'll mention Steve and Tracey's to him.