Active CB Users

Forum for CB, PMR, Ham, Business users, GMRS, Repeaters and all other TX Chat

Re: active cb users

Postby JGR » Sun Sep 27, 2015 11:44 am

BlackKnight_UK wrote:I was considering getting a new base antenna to replace the old one which is still there, and an SSB radio, maybe I should have done that instead of buying a multi handheld.

Antenna first and foremost with everything we do with RF as without a good antenna the item on the other end means nothing, still you can keep saving up and get one eventually. :thumbup:
John 2E0JGR CMH (clinical master hypnotist)
JGR
 
Posts: 192
Joined: Tue May 28, 2013 10:51 am
Location: Cumbria

Re: active cb users

Postby m0lsx » Sun Sep 27, 2015 12:44 pm

Even on a wavelength a short as 10 meters & legal CB frequencies are at the top end of 10 meters in wavelength. The losses as a result of a combination of very short inefficient antenna combined with a lack of counterpoise is going to bite you.
One thing that may help with a CB handheld is what I do on 4 meters to help with the lack of performance. A counterpoise tail. On 4 meters I use 2 meters of wire connected under a screw.
A hand portable is great for hill topping & with a counterpoise & smallish portable antenna, good distances can be worked from a small ruck sack.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://www.google.com/cse/home?cx=partner-pub-6291336405621919:2662881632
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5361
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Re: active cb users

Postby auntystatic » Mon Sep 28, 2015 11:13 pm

Don't forget British CB changed last year to include the use the CEPT frequencies with 12Watt sideband usage, something we have been waiting for, for 30 years, its in the 11 metre band ( top end of 10 metres is for amateur fm and satellite working only :smiles: ) although 27.555MHz usb is outside the band it is recognised as the international calling frequency, when the conditions allow there are lots of people calling on there, more information can be found on the ofcom site http://stakeholders.ofcom.org.uk/binaries/spectrum/spectrum-policy-area/spectrum-management/research-guidelines-tech-info/interface-requirements/IR_2027.2.pdf
I'll try anything once, twice if I like it.
User avatar
auntystatic
 
Posts: 30
Joined: Tue Jun 24, 2014 12:18 am
Location: North Yorkshire

Re: active cb users

Postby m0lsx » Tue Sep 29, 2015 12:25 pm

auntystatic wrote:Don't forget British CB changed last year to include the use the CEPT frequencies with 12Watt sideband usage, something we have been waiting for, for 30 years, its in the 11 metre band ( top end of 10 metres is for amateur fm and satellite working only :smiles: ) although 27.555MHz usb is outside the band it is recognised as the international calling frequency, when the conditions allow there are lots of people calling on there, more information can be found on the ofcom site http://stakeholders.ofcom.org.uk/binaries/spectrum/spectrum-policy-area/spectrum-management/research-guidelines-tech-info/interface-requirements/IR_2027.2.pdf


It is not until you get below 27.300 Mhz that it is 11 meters.
The calculation is the speed of a radio wave 300,000 meters per second divided by the frequency in khz.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://www.google.com/cse/home?cx=partner-pub-6291336405621919:2662881632
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5361
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Re: active cb users

Postby BlackKnight_UK » Wed Sep 30, 2015 10:24 am

But who is arguing over a few centimeters?
User avatar
BlackKnight_UK
 
Posts: 56
Joined: Sun Aug 30, 2015 12:04 pm
Location: Somerset

Re: active cb users

Postby Crazylegs » Wed Sep 30, 2015 4:22 pm

BlackKnight_UK wrote:But who is arguing over a few centimeters?

Yes exactly!
Just as your hand has the power to hide the sun, mediocrity has the power to hide your inner light!

Uniden UBC3500XLT
Uniden UBC125XLT
Realistic Pro-50
Harvard 410T
User avatar
Crazylegs
 
Posts: 87
Joined: Wed Mar 06, 2013 11:17 pm
Location: Out there!

Re: active cb users

Postby m0lsx » Wed Sep 30, 2015 5:34 pm

BlackKnight_UK wrote:But who is arguing over a few centimeters?


But when it comes to antenna length it is not just a few CM's is it??
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://www.google.com/cse/home?cx=partner-pub-6291336405621919:2662881632
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5361
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Re: active cb users

Postby Alfie » Wed Sep 30, 2015 9:35 pm

I get a bit of traffic on cb channels busy through the day with mostly truck drivers and other mobiles. i also get local and long distantish chat at night a lot of nights. also get a bit of interference and foreign stations coming in so i have cb all in one bank so i can lock it out whenever. dont forget to program all 80 channels in not just the uk40 and 27.555 MHz (USB).
User avatar
Alfie
 
Posts: 612
Joined: Sat Feb 16, 2013 8:48 pm
Location: The City

Re: active cb users

Postby m0lsx » Wed Sep 30, 2015 10:53 pm

CB is about the only thing I use my old Alinco DJ-X3 for now. I originally brought it to listen to the old scrambled analogue Police transmissions, which it did a great job of resolving. I also used it to listen to the old 31 MHz cordless phones.
But now, if it is used it is simply to scan manually through the CB bands. I also occasionally use one of my base radios on band scans, as I am scanning with the others. And CB is perfect for band scans as it is a small chunk of spectrum. I generally scan 26.5 to 28 in 5khz steps.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://www.google.com/cse/home?cx=partner-pub-6291336405621919:2662881632
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5361
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Re: active cb users

Postby BlackKnight_UK » Thu Oct 01, 2015 10:54 am

m0lsx wrote:
BlackKnight_UK wrote:But who is arguing over a few centimeters?


But when it comes to antenna length it is not just a few CM's is it??


I'm fairly certain it doesn't make much difference if you are trying to tune your antenna to cover all legal channels, unless you are going to adjust it for every channel!
User avatar
BlackKnight_UK
 
Posts: 56
Joined: Sun Aug 30, 2015 12:04 pm
Location: Somerset

PreviousNext

Return to The TX'ers Forum

Who is online

Users browsing this forum: No registered users and 2 guests