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t
terry Posted on Mar 12, 2020
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What# is the transistor on Q701 in a cobra 29 weather band sound tracker cb radio?

1 Answer

Brad Brown

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  • Cobra Master 19,187 Answers
  • Posted on Nov 21, 2020
Brad Brown
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Joined: Nov 14, 2008
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The number is 2sb891 and the purpose in the circuit is voltage regulation.

5 Related Answers

Anonymous

  • 27 Answers
  • Posted on Jun 27, 2008

SOURCE: cobra 29 ltd sound tracker cb

you start by replacing every electr cap as most cb radios live in a hostile enviorment, They ALL suffer from dried up electolite. if the set is old ,that will be you first step,if you are up to speed with desoldering with out lifting copper tracks/etc, no reason why you can't have a go...do not shift trim pots or tuning can slugs
with out marking their factory positions as this can end up in a
mess
CHEERS

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Anonymous

  • 1139 Answers
  • Posted on Dec 08, 2008

SOURCE: weather Radio won't work on 29 Nightwatch

Hello papapyr07,

It looks like you are trying to run the CB and the commercial radio off of the same antenna at the same time? This I gather is failing. This may be due to the pre-wired antenna having a filter on it to prevent exactly what you are trying to do. If this is the case you may have no choice but to run a separate antenna for your CB (this is the most logical choice), now you can try to find the filter if it is an external filter and remove it and use an antenna matching network to connect the CB to the existing antenna system (next logical, but may void the antenna system warranty). In any event you will either have to run another antenna for the CB or find and remove the present antenna filter.

I hope this helps

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

John Saybe

  • 16 Answers
  • Posted on Jul 08, 2009

SOURCE: need wiring digram for road king 56 to cobra 29 cb

He is actually looking for the Microphone wiring which is a roadKing Mic to the Radio Cobra 29.

Anonymous

  • 103 Answers
  • Posted on Aug 29, 2009

SOURCE: No TX Power

If it is classic it is a 2SC2029 driver transistor.

thndr143

  • 141 Answers
  • Posted on Jan 30, 2010

SOURCE: My 18 WX ST Cobra CB radio will allow me to

make sure the CB/Weather is set to CB.

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Related Questions:

0helpful
1answer

Every time i turn on my cobra 29 wx nw st sound tracker it goes back off

Hi Davis, please post on CB radio forum, this is Radio scanner forum.

Cheers,
Peter
1helpful
2answers

Is it possible to convert the cobra 29 wx nw st sound tracker cb to 10 meter amateur band?

No it cannot. If you want that buy a Ranger or a Galaxy.

The 29 can be altered to increase modulation and turned down in power to match it to amp for increased output of power.

Set to dead key a watt or so with a 100 watt amp it would dead key low and swing to 80 to 100 watts pep.(peak envelope power)
0helpful
1answer

With my cobra 29 wx nw st I can not pick up any weather channels. I have the k30 antenna. Do I need a dual band antenna?

Do you hear static when you turn on weather? If so there are just none in range of you. There are not weather radio stations everywhere. You would not use a dual band antenna on any CB. Only an antenna designed for the 11 meter band. Which is the 27mhz CB radio band.

You can go here and see if you have NOAA All hazards weather radio coverage in your area.

If the CB radio is working otherwise it is most likely that there is just not a NOAA transmitter near you.
0helpful
1answer

How do I adust the watts on my cobra 29 ltd CB

Replace the 2314 driver withe a 2SC2166 driver and the final transistor with a 2SC1969 final transistor. Re-tune coils L10,L9,L8 for maximum power. Don't cut d11 like some may say to. It will turn your radio into a crappy sounding radio. Simply adjust VR4. Never cut a limiter. This will get you some solid sounding power.
0helpful
1answer

Need to wire a high gear m75 for acobra sound tracker

It should already be wired for that radio. Its a cobra mic, on a cobra radio, its all wired for cobra. Witch is a very common mic wiring.
0helpful
2answers

POWER CORD

check your ground wire and make sure it is getting a good connection because if not you will keep blowing fuses after a while
0helpful
1answer

NO sound

Make sure the switch is in the CB position. If this is so, then you may have a bad switching transistor or a bad diode in the board. Also on some of the weather band cobras I have worked on in the past, I have found bad pll chips. Good Luck
Ed
NC Electronic
Mills, Wyoming
0helpful
1answer

Cobra 29 ltd night watch with sound tracker i want to convert it

Go to a CB shop and have them put in an "A" board. Then have them tweak & peak. Got mine done for $80.00.
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