Go Back   WorldwideDX Amateur Radio Forums > Citizens Band Related > General CB Services Discussion


Amateur Callsign Lookup
Enter Callsign:

cobra 29 wx nw st mods

Reply
 
LinkBack Thread Tools Display Modes
  #9  
Old 10-13-2008, 06:02 AM
Radio Tech's Avatar
Radio Operator
iTrader: (1)
 
Join Date: Sep 2008
Location: North Carolina
Posts: 558
Radio Tech is on a distinguished road
Default


Ok, Simple fix for frequency expansion.
Just build a new oscillator like the one at TR-20.
Add a 15.810 for high and a 14.910 for low.
This can be done on one board.

And there you go.

Reply With Quote
  #10  
Old 11-15-2008, 05:10 PM
Member
iTrader: (0)
 
Join Date: Aug 2008
Posts: 48
spider451 is on a distinguished road
Default

the chip has a differant number but it is the same as upd2816

Reply With Quote
  #11  
Old 11-19-2008, 07:12 PM
Senior Member
iTrader: (2)
 
Join Date: Aug 2008
Posts: 2,329
9C1Driver is on a distinguished road
Default

For any future radio purchases I would avoid anything that says SOUNDTRACKER. They are built sub-par compared to older 29's and 25's. I have seen them referred to as Soundcrappers, I'm sure they earned this nickname for a reason.

Reply With Quote
  #12  
Old 04-27-2009, 08:42 AM
Member
iTrader: (-1)
 
Join Date: Jan 2008
Posts: 33
Audio Man is on a distinguished road
Default

is there a way to disable the sound tracker?

Reply With Quote
  #13  
Old 12-03-2010, 04:09 PM
TAZ TAZ is offline
Junior Member
iTrader: (0)
 
Join Date: Dec 2010
Posts: 1
TAZ is on a distinguished road
Default

Wondering if anyone can help me. I am reading these post and understanding some of it. But the queation I have is how I can hear other truckers better.

I have the cobra 29wxnw soundtracker came stock with the truck from Western Star.

I have hear people say they have "motherboard"? and you can hear them from a couple KM away.

How far should away should be normal to hear other Truckers?

Thanks

Reply With Quote
  #14  
Old 12-03-2010, 07:38 PM
Member
iTrader: (0)
 
Join Date: Aug 2009
Posts: 63
Big Dummy 123 is on a distinguished road
Default

Hi all yes the soundcrapper can be disabled. Go to the cobra site if ya cant find it. I have it printed out ill have to find it, Ben

Reply With Quote
  #15  
Old 12-05-2010, 01:58 AM
Skyrider's Avatar
Junior Member
iTrader: (0)
 
Join Date: Apr 2010
Location: Leon, GTO. Mexico
Posts: 21
Skyrider is on a distinguished road
Default

I have to ask a dumb question. What exactly does the sound tracker button do anyway? I have a little cobra 25 with sound tracker and when i press the button i dont really notice any difference at all!

Reply With Quote
  #16  
Old 12-05-2010, 02:32 PM
loosecannon's Avatar
break on through
iTrader: (1)
 
Join Date: Mar 2006
Posts: 1,964
loosecannon is on a distinguished road
Default

ok, taz's question first, because he posted first.

average mobile to mobile range for barefoot (no linear amplifier) radios is around 5-20 miles, depending greatly on your antenna setup.

if you want to hear others better, and for that matter, reach out further; your antenna system is the place to start making improvements.
dont buy cheap off brand antennas, and mount it up high on your vehicle.
yes, many variables there, but searching around this forum should give you some good suggestions.

i dont know what "motherboard" is, but you should be able to hear people from a couple of kilometers away with no problem whatsoever using just a stock CB radio.


Skyrider, soundtracker is a marketing ploy used by cobra to get unsuspecting buyers to choose their radios over the unidens and midlands that are sold right next to them.

the concept behind it is called "companding" which is a mash up of the words compressing and expanding.
the idea is that when you add compression to your mic audio, it will give your voice more punch, allowing you to be heard over the noise.
the expansion is on the receive end, where your receiver "expands" the audio coming in that has been compressed, and allows you to hear that station over others that arent running compression in their mic audio.

there are two things about this that cobra fails to mention. first, BOTH the receiving radio and the transmitting radio have to be using the soundtracker feature for it to have any benefit whatsoever. pretty lame eh?

the second thing they dont tell you is that it doesnt work very well even in the rare case where both radios are using the soundtracker feature.

the "companding" concept got big in the early 80's and was planned for use in the telephone industry.
radio people borrowed the idea and tried applying it to radio comms.
Selman Enterprises (the Secret CB people) used to sell a kit called the VSB-1
(Voice Signal Booster) and if you read their advertisements for it; you would have thought you could hear someone on the moon with it. LOL

the idea just never caught on, and i for one am very glad it did not.
if it did, pretty much all major branded CB's would have that "feature".

most people just never turn it on. some of us will remove it from the radio completely and use the button for something useful.
i have heard people say that radios that came with the soundtracker feature sound better with it removed than just with it off, but i have not had an opportunity to confirm or deny this.

LC
__________________
https://i.chzbgr.com/maxW500/1912864512/h0491035C/

Reply With Quote
Reply

Bookmarks
Worldwide Radio Forum



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 06:24 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Worldwide Radio Forum