How common is HF CB (27 MHz Australia), specifically SSB compared to AM

dan12345678

Newbie
Joined
Sep 10, 2021
Messages
3
I'm considering buying a HF CB radio along with some of my mates, for long range communication and listening. I am considering buying a TX2720, but I see that it is only AM and not SSB. How much will not having SSB impact my ability with others and would it be worth it to buy a second hand radio with AM and SSB. Thanks in advance as I am new to HF and modulation.

Cheers,
Dan.
 

TomLine

Member
Premium Subscriber
Joined
Jul 22, 2019
Messages
48
Location
Hamilton, Ohio
Is that TX2720 radio VHF 27 mhz? AM 4 watts? Understand there may be a unlicensed "UHF CB" 476 Mhz band as well used down under? FM on that higher band would probably sound better. I'd recommend talking with truckers, radio clubs, and see what's really working there which may be important to know. What kind of distances and terrain are you talking about? Mobile or base? What kind of antenna space is available?

How about getting a low cost RTL-SDR usb stick, SDR# (sdr-sharp is free) a couple cheap vhf/uhf car antennas, or cheap telescoping antenna you can adjust to different lenghts, and listen to what's going on.
 
Last edited:

dan12345678

Newbie
Joined
Sep 10, 2021
Messages
3
Is that TX2720 radio VHF 27 mhz? AM 4 watts? Understand there may be a unlicensed "UHF CB" 476 Mhz band as well used down under? FM on that higher band would probably sound better. I'd recommend talking with truckers, radio clubs, and see what's really working there which may be important to know. What kind of distances and terrain are you talking about? Mobile or base? What kind of antenna space is available?

How about getting a low cost RTL-SDR usb stick, SDR# (sdr-sharp is free) a couple cheap vhf/uhf car antennas, or cheap telescoping antenna you can adjust to different lenghts, and listen to what's going on.
Yeah its 27 MHz HF CB 40Ch. I didn't know you could get USB connectors for antennas and I think I might just do that. Thanks for your help.
 

TomLine

Member
Premium Subscriber
Joined
Jul 22, 2019
Messages
48
Location
Hamilton, Ohio
A cheap usb stick and my sdr# free software. Watching and listening 20 meters ham band. The digital guys are on the left, and the side band guys are on the right.
 

Attachments

N8IAA

Member
Joined
Dec 19, 2002
Messages
7,131
Location
Fortunately, GA
A cheap usb stick and my sdr# free software. Watching and listening 20 meters ham band. The digital guys are on the left, and the side band guys are on the right.
You do understand that he wants to TALK, as well as, listen????
What good is a SDR for doing that???
 

TomLine

Member
Premium Subscriber
Joined
Jul 22, 2019
Messages
48
Location
Hamilton, Ohio
You do understand that he wants to TALK, as well as, listen????
What good is a SDR for doing that???
Watching and listening with a low cost SDR will help him learn a great deal, encourage a journey to become a knowledgeable amatueur operator, and help him spend his money wisely on equipment to talk on bands which will actually be in use. In other words, it will answer his question, and give him knowledge. I have a very postive feeling about his ability and interest as we all should.
 

N8IAA

Member
Joined
Dec 19, 2002
Messages
7,131
Location
Fortunately, GA
Watching and listening with a low cost SDR will help him learn a great deal, encourage a journey to become a knowledgeable amatueur operator, and help him spend his money wisely on equipment to talk on bands which will actually be in use. In other words, it will answer his question, and give him knowledge. I have a very postive feeling about his ability and interest as we all should.
When you say 'amatuer' operator, is that as in ham radio? He and his buds want something to use while they are out and about.
Not evreyone wants to tie up a PC to just monitor AM CB radio, or, other frequencies you might believe are interesting.
Different country, different interests. Maybe we should wait and see what he posts in the future.
Just saying..........
 

ko6jw_2

Member
Premium Subscriber
Joined
May 18, 2008
Messages
1,222
Location
Santa Ynez, CA
SSB will give you more efficiency watt for watt than AM. That's why the ham radio community uses SSB on phone for the most part. AM is limited to some enthusiasts using vintage equipment. On CB it gives you double the number of channels.

In Australia it would make more sense to get amateur licenses given that you would have access to more frequencies and higher power. Being able to switch bands depending on propagation conditions is very important. Due to the long distances involved, CB radio could be of limited use. But, perhaps you and your friends will always stay within range of each other.
 

TomLine

Member
Premium Subscriber
Joined
Jul 22, 2019
Messages
48
Location
Hamilton, Ohio
When you say 'amatuer' operator, is that as in ham radio? He and his buds want something to use while they are out and about.
Not evreyone wants to tie up a PC to just monitor AM CB radio, or, other frequencies you might believe are interesting.
Different country, different interests. Maybe we should wait and see what he posts in the future.
Just saying..........
I agree. He's just getting started. The radio situation in Australia and is certainly very interesting. They have a large number of open public repeaters for their uhf "cb" band. They're very picky about which radios are permitted for sale. VHF is like 4 watts AM with band planned repeater and SSB channels, and UHF is like 5 watts. Normal operation seems very familiar, and "you might as well turn off the radio in town". Lots of beautiful country with no cell service still.
 

dan12345678

Newbie
Joined
Sep 10, 2021
Messages
3
I agree. He's just getting started. The radio situation in Australia and is certainly very interesting. They have a large number of open public repeaters for their uhf "cb" band. They're very picky about which radios are permitted for sale. VHF is like 4 watts AM with band planned repeater and SSB channels, and UHF is like 5 watts. Normal operation seems very familiar, and "you might as well turn off the radio in town". Lots of beautiful country with no cell service still.
When you say 'amatuer' operator, is that as in ham radio? He and his buds want something to use while they are out and about.
Not evreyone wants to tie up a PC to just monitor AM CB radio, or, other frequencies you might believe are interesting.
Different country, different interests. Maybe we should wait and see what he posts in the future.
Just saying..........
Thanks for your advice. I do want to eventually move into amateur, but at the moment that isn't really an option for me because of my location and the lockdown and I would like to get a better understanding of radio and before I move into amateur. My mates and I are already on UHF CB, but we're limited to using the local repeater to communicate, which is subject to shenanigans such as jamming.

The two main reasons I'm asking about AM and SSB are range and interoperability, but I think I'll just buy a Uniden 980 SSB, throw an antenna on the roof and hope it works.
 
Top