small but powerfull

[balou]

ok guys heres my question

i work in a open pit mine as an operator i tried my scanner a few times with a cheap antenna
all i can get is not more than 11% of the control channel for the bell fleetnet..i hear a peep once in a while


i cant bring anything big in there
i want a antenna that would bring in the signal in my pro -96

it would be vhf 140,245

any help would be appreciated

 

[W6KRU]

What kind of antenna are you talking about? Mobile or portable?

 

[balou]

i can bring a mobile in as long as its not to long so that i can hide
or even a portable antenna if its a good one

 

[Taloniilm]

If you could get away with a magnet mount... the Larson tri-band would be a good choice, otherwise the Diamond RH 77 would be a good option

 

[balou]

last night at work i took my uhf to bnc connector with me
we have vhf motorola in all equipment
i tried with the antenna they have on ther for the fun of it and it didnt do much for me
the have maxrads

i guess i could use as rh77 with a magmount
i'll try to find a larsen as well to try out...


im about 35 km from town...i get the other control channel at 99% but theres is not much there its on a lonely strech of highway

 

[kb2vxa]

Assuming you mean 140.245MHz a 1/4 wave 2M ham mag mount stuck on top of the cab should suffice being it has sufficient receive bandwidth to cover that frequency. It has two advantages, it's small and unobtrusive and a larger gain antenna has a much narrower bandwidth so when you consider gain vs. loss the gain antenna will buy you no advantage. For this single band application a multi band antenna is pointless and besides, they're considerably more stand out like a sore thumb boss's eye catching monstrosities.

 

[balou]

thank you for the nice answer
is there a certain model that i should be looking at

 

[alfapapamike]

The Diamond (RH-77CA for a BNC mount) previously mentioned will work well on that freq. and is black: pretty stealth. It's under 18 inches.

I've got mine on a mag mount that I use when I'm just sitting at my desk, using my Pro-97 for airband and it's great.

I've got this mount: WR AX-91M Magnetic Antenna Base

 

[balou]

thanks again guys very appreciated

1 more question

i am more that 30 kms or 20 miles from the control channel
this will work..

 

[ermin]

More than likely being 20 miles away and in a pit it will be difficult to improve on what you have already.
Ermin

 

[Thayne]

I think we are all in a pit--

 

[balou]

i work on top most of the time not in the hole lol

 

[kb2vxa]

OOOOHHHH... talk dirty to me!