CRYSTAL SWITCH

Discussions on CB Radio Modifications
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beerbarrel
Dead Key
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Posts: 27
Joined: Monday 23rd Jun 2008, 4:40
Location: burton on trent

CRYSTAL SWITCH

Post by beerbarrel » Tuesday 2nd Sep 2008, 6:34

I was wondering if anyone knows if you can use this crystal switch in uk cb radio ie on the lc 7137 just to get a extra band some where within the vco range and does any one on here make them thanks novice modder shaun

warhorse
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Joined: Sunday 23rd Apr 2006, 1:15
Location: uk

switch board

Post by warhorse » Thursday 4th Sep 2008, 4:08

Hi- if you look on scotts main cb page the switch board is their easy to make on copper track board. i,e on a 1.1 scale but if you detract away from 10.240 mhz then things get very complicated on th rx side of the math. in my other post i made an error in mhz if you use a 10.200 mhz crystal then this will give you 16 channels on the high band, channel 17 then becomes channel 1 on the 27601 cb band if you tie both legs and use very thin wires to switch the crystals this will keep losses down keep the wires as short as poss and you can get away from using a switch board if this is the case use a updwn switch on the cb.

beerbarrel
Dead Key
Dead Key
Posts: 27
Joined: Monday 23rd Jun 2008, 4:40
Location: burton on trent

Post by beerbarrel » Friday 5th Sep 2008, 6:37

Yet again warhorse thanks i was pondering the idea when i seen the crystal switch and your other advice was very helpfull all good thanks i will have ago at making the board no harm in experimenting is they rig was only 3 quid cheap enough to tinker and learn with

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