COBRA 148 GTL ADDING FREQ. COUNTER

Discussions on CB Radio Modifications
Post Reply
trying
Newbie
Newbie
Posts: 8
Joined: Sunday 25th Sep 2011, 19:34
First Name: Otis
Location: USA

COBRA 148 GTL ADDING FREQ. COUNTER

Post by trying » Sunday 25th Sep 2011, 19:59

I have a dyi freq, counter and would like to connect it so that it reads tx and rec freq. How do I connect? :D

littledot
Newbie
Newbie
Posts: 5
Joined: Friday 23rd Sep 2011, 6:51
First Name: Leland
Location: UK

Re: COBRA 148 GTL ADDING FREQ. COUNTER

Post by littledot » Sunday 25th Sep 2011, 23:08

DYI ? Havnt heard of that one, Is it anything like the SS3900 type counter ?

trying
Newbie
Newbie
Posts: 8
Joined: Sunday 25th Sep 2011, 19:34
First Name: Otis
Location: USA

Re: COBRA 148 GTL ADDING FREQ. COUNTER

Post by trying » Monday 26th Sep 2011, 1:56

The diy freq meter is a counter kit from electronics-diy.com measures freq fron 10 to 60 MHz.
it can measure weak signals from crystal oscillators. sorry about the DYI. AT 84 my fingers are a little tired
Thanks for the come back, keeps me on my toes. :D

littledot
Newbie
Newbie
Posts: 5
Joined: Friday 23rd Sep 2011, 6:51
First Name: Leland
Location: UK

Re: COBRA 148 GTL ADDING FREQ. COUNTER

Post by littledot » Monday 26th Sep 2011, 2:09

Ah right, I did actually think DYI was a model, I wasn't playing grammar police. :D

I cant help you on this one as i only know how to connect up a 3900 type counter [CRT superstar kf v1] for the 148, Theres plenty of instuctions around for this maybe it could give some clues, You never know.

trying
Newbie
Newbie
Posts: 8
Joined: Sunday 25th Sep 2011, 19:34
First Name: Otis
Location: USA

Re: COBRA 148 GTL ADDING FREQ. COUNTER

Post by trying » Tuesday 27th Sep 2011, 22:57

surrely some one out there can answer this simple request---or is there?

trying
Newbie
Newbie
Posts: 8
Joined: Sunday 25th Sep 2011, 19:34
First Name: Otis
Location: USA

Re: COBRA 148 GTL ADDING FREQ. COUNTER

Post by trying » Wednesday 28th Sep 2011, 2:30

lets try another approach-----can anyone tell me where to connect a freq meter to read both tx and rec on any cb unit,
probable not!

User avatar
The Defpom
Site Admin
Site Admin
Posts: 435
Joined: Friday 20th Aug 2004, 18:06
Location: New Zealand
Contact:

Re: COBRA 148 GTL ADDING FREQ. COUNTER

Post by The Defpom » Thursday 24th Nov 2011, 20:42

The only way to read the TX and RX freq on a radio is to hook into the offset oscillator, however, this will not give you the on channel frequency, as it would need to be mixed with another frequency (to match the radios IF), for instance if you hooked into the 148, you would be seeing a 34MHz frequency, if you then had a mixer circuit installed too then that could deduct the 7.8MHz IF from that to give the correct on channel frequency.

trying
Newbie
Newbie
Posts: 8
Joined: Sunday 25th Sep 2011, 19:34
First Name: Otis
Location: USA

Re: COBRA 148 GTL ADDING FREQ. COUNTER

Post by trying » Thursday 24th Nov 2011, 22:56

thanks for your info. found the answer i needed at: http://www.radiomods.co.nz/frequencycountermods.html
trying =D> =D> =D>

Post Reply

Return to “CB Radio Modifications”