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Now for something completely different. Converting a CB to 10/12 meters

nomadradio

nomadradio

Analog Retentive
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Apr 3, 2005
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Louisville, KY
www.nomadradio.com
For decades radios with features not legal for 27 MHz CBs have entered the country as "10 meter" transceivers. Typically the Galaxy, RCI, Connex and such brands will be intentionally crippled on the inside before shipment, and get "un-crippled" to cover 40 CB channels once the radio is safely across the border. Not legal, but popular year after year.

This guy does quite the opposite. Takes a FCC-legal CB AM/FM transceiver and expands it from 40 channels to 10 and 12 meters.

Go figure.



73
 
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Back in the late 70's...early 80's...Ham Radio Magazine and 73 mag has many articles on converting CB's to 10m...most of those articles I think can be found on archive pages....

I had either a Cobra 138 (?) mobile ...or that old SBE Sidebander II (?)....plus a 4 lung 8950 :cool: mobile amp...."Can you hear me NOW!!!"...had a BLAST on 28.400 and 28.475 were my fav's running mobile.
All the Best
Gary/W9FNB

I still have that AMP SUPPLY 10M (Tokyo High Power built) mobile transceiver...neat little 20 w PEP SSB/CW rig! 28.00 -29.00 MHz
 
Last edited:
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AudioShockwav said:
One of the first radios I ran on 10 meters was a 148 bodged up to 28 MHz.
Lou Franklin had plenty of info about ten meter conversion back then.


73
Jeff
Click to expand...
I have a Grant XL I wouldn't mind doing this with. Can you tell me what all is involved? I have two rigs, one with and one without a Digiscan.

73,
Brett
 
Start here

S

Thread 'Grant XL 10 meter mod'

Has anyone done the Grant XL 10 meter mod? I believe it's the same for other similar radios.

I found instructions saying to replace crystal X3 with a 11.6908Mhz from the stock 11.325Mhz Couldn't locate a 11.6908 but I did get a 11.6900 which should be close enough.

Swap it out and tested, seems to work except it will only transmit up to channel 13. Channel 14 makes the TX/RX light flicker and anything higher does nothing.

Channel 1 = 28.06 and channel 13 works out to 28.211Mhz but can't get higher. Would like to get access 10 meter voice area 28.3 to 28.5, seems to receive fine...
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73
Jeff
 
AudioShockwav said:
Start here

S

Thread 'Grant XL 10 meter mod'

Has anyone done the Grant XL 10 meter mod? I believe it's the same for other similar radios.

I found instructions saying to replace crystal X3 with a 11.6908Mhz from the stock 11.325Mhz Couldn't locate a 11.6908 but I did get a 11.6900 which should be close enough.

Swap it out and tested, seems to work except it will only transmit up to channel 13. Channel 14 makes the TX/RX light flicker and anything higher does nothing.

Channel 1 = 28.06 and channel 13 works out to 28.211Mhz but can't get higher. Would like to get access 10 meter voice area 28.3 to 28.5, seems to receive fine...
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73
Jeff
Click to expand...
Interesting! Thanks Jeff!
 
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