Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old October 27th 04, 05:46 PM
I Am Not Ice
 
Posts: n/a
Default Cobra 19 mods

On Wed, 27 Oct 2004 09:33:08 -0400, "N8WWM" wrote:

Unscrew bottom cover.

Locate RV2 pot and turn to substantially increase both modulation and TX
power swing.

Find coil RFC5, spread moderately to gain some TX power.

Locate L201, a sealed coil and core. Since the core cannot be adjusted,
force two (2) loops of the coil over the core to increase TX power.

Find L202, compress this coil as much as possible to gain TX power.

Locate L203, spread coil dramatically and bend into a semi-circular arc to
increase its length. This will increase TX power.

RESULTS:

Stock Radio TX was 4.5 watts swinging to 6 watts. After mods, TX was up to
7.5 watts swinging to 15+ watts with a stock microphone. No bird meter, so
the output power stated here is somewhat exaggerated.



Will this also work on a Cobra 29?
  #2   Report Post  
Old October 27th 04, 05:46 PM
I Am Not Ice
 
Posts: n/a
Default

On Wed, 27 Oct 2004 09:33:08 -0400, "N8WWM" wrote:

Unscrew bottom cover.

Locate RV2 pot and turn to substantially increase both modulation and TX
power swing.

Find coil RFC5, spread moderately to gain some TX power.

Locate L201, a sealed coil and core. Since the core cannot be adjusted,
force two (2) loops of the coil over the core to increase TX power.

Find L202, compress this coil as much as possible to gain TX power.

Locate L203, spread coil dramatically and bend into a semi-circular arc to
increase its length. This will increase TX power.

RESULTS:

Stock Radio TX was 4.5 watts swinging to 6 watts. After mods, TX was up to
7.5 watts swinging to 15+ watts with a stock microphone. No bird meter, so
the output power stated here is somewhat exaggerated.



Will this also work on a Cobra 29?
  #3   Report Post  
Old October 27th 04, 05:46 PM
I Am Not Ice
 
Posts: n/a
Default

On Wed, 27 Oct 2004 09:33:08 -0400, "N8WWM" wrote:

Unscrew bottom cover.

Locate RV2 pot and turn to substantially increase both modulation and TX
power swing.

Find coil RFC5, spread moderately to gain some TX power.

Locate L201, a sealed coil and core. Since the core cannot be adjusted,
force two (2) loops of the coil over the core to increase TX power.

Find L202, compress this coil as much as possible to gain TX power.

Locate L203, spread coil dramatically and bend into a semi-circular arc to
increase its length. This will increase TX power.

RESULTS:

Stock Radio TX was 4.5 watts swinging to 6 watts. After mods, TX was up to
7.5 watts swinging to 15+ watts with a stock microphone. No bird meter, so
the output power stated here is somewhat exaggerated.



Will this also work on a Cobra 29?
Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
QST mods for IC-728 please? Dave Bullock Equipment 9 October 12th 04 08:03 AM
QST mods for IC-728 please? Dave Bullock Equipment 0 October 11th 04 08:16 AM
WANTED: Cobra SR-15 handheld scanner K5DH Equipment 0 February 6th 04 02:29 PM
WANTED: Cobra SR-15 handheld scanner K5DH Equipment 0 February 6th 04 02:29 PM


All times are GMT +1. The time now is 05:53 PM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017