How do i peak and tune a cobra 29 lx

Iron

• 3018 Answers

SOURCE: cobra 29 lx need owners manual and peak and tune

• Here is the manual you requested http://www.mediafire.com/?ovsf5q2p8zlqluz

• When you get to the link click on "Click here to start download from MediaFire.." and the PDF will download onto your computer.

• The slug in the back of the radio by the final transistor turn left until desired power output is reached.
• The coils on the right side of the heat sink for the final can be spread a little bit apart for a little more power.
• VR1 receive gain
• VR2 receive signal meter
• VR3 squelch
• VR4 AMC
• VR5 transmit power meter
• VR6 antenna warning light

• If you have any comments please feel free to leave them here.
• Hope this helps and thank you for using FixYa.

Posted on Oct 13, 2011

SOURCE: how do i tune and peak a cobra 29 ltd classic

Only a qualified technical person is allowed to do so per FCC, (Federal Communications Commission). That means what it says. If you are not one, then you cannot do this procedure....hope this helps....

Posted on Mar 12, 2010

SOURCE: cobra 29 ltd classick tuning

Here is a link to the Phantom CB's seb site, you can click on the brand of radio you want to peak, in you case, Cobra. Then follow through the chart to the Cobra 29 LTD Classic under the Cobra power mods, which tells you what to adjust and changes that can be made. Only one suggestion I have before you start, where it says to cut D11, don't, only turn up VR-4 for your modulation. That is the only thing I don't like with their instuctions is telling people to cut the modulation limiter. You can get full modulation by turning up the potentiometer, and if you cut the limiter, sometimes it will over modulate.

http://www.714xpress.net/714mods1.html


You need an inline power meter to peak the radio out. This is the quick and dirty way to peak and tune a radio. To properly align a radio, you really need an oscilloscope and other related test equipment.


If you have more questions, don't hesitate to post here or email me at [email protected]. I can't promise I will have an answer to all questions, but I will do the best I can to help.


Dean Pitts
Rollin CBs

Posted on Nov 21, 2008

SOURCE: how do i turn peak and tune my cobra 19 ultra 3

un-solder 1 leg of D11 diode, pull it out of the board, and make sure it does not short against anything.

That will bring your modulation up all the way. there are other adjustments that can be done, but without proper meters, you will most likely mess up the radio.

D11 will be a big step up any way.

Posted on Oct 03, 2009

SOURCE: my cobra 29 has a 75watt amp on the back how can i get more

If you're using the RFX-75 amp section. Then you'll need to make sure your transmiter section is tuned for full output. The last last unit I installed in a Cobra 29 LTD, the radio modulated right at 100 watts output.
Hope this helps,
J.R.

Posted on Jan 23, 2010