Question about Ranger Communications RCI-6900F-25 CB Radio

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Rci 6900f drifting

Rci 6900f the freq. drifts slowwly up and down for the first 5 or 6 hours it is on
is there a easy fix out there

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Though those radios are "Marketed" as "10 Meter Ham Radios" (Wink Wink) they were and are intended to be Illegally used on the CB frequencies and those frequencies in that general frequency spectrum. Those radios are "NOT" Type accepted for any band within the generally accepted Radios services. That said, do you notice that the radio itself is drifting while you are listening to stations on Single Sideband ? Drifting on AM wouldn't be very noticeable unless the radio is drifting a lot. Like 2 or 3 KC! I have seen Frequency counters drift when the radio didn't. Also, because the radios are made of less expensive componants, Frequecy stability issues can be caused by changes in temperature (Cold to Warm during the winter months). This is generally due to crystal or adjustable coil issues in the frequency generation circuitry (Mixer and fundimental stages). Best to bring it to a shop after you determine if the radio is really drifting (Verified by using it on SSB for an extended time).

Posted on Feb 14, 2015


There is a fix the last statement was ENTIRELY untrue.
Take the radio to a shop or tech you cant trust, and have it re-allinged and all will be fine. Possible a bad/weak voltage regulator; i had similar problems with an old Sommerkamp.
Just dont trans on the 10 meter band w/o a licence and you'll be ok.... its not like youre smuggling in illegal ailens!

Posted on Jul 02, 2008


I have not had the radio turned in to a cb as i am a ham operator
why did u reply if u didnt have any usefull info?

Posted on Feb 03, 2008

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Since the RCI 6900 is a 10 meter ham radio, and not desogned for the 11 meter band, when you had it modified, you also expanded the PLL chip past it's normal use. 10 Meter radios are not designed for CB use ( and of course this is also illegal ) so the PLL does drift. There is no real fix on this problem. Sorry
NC Electronic
Mills, Wyoming

Posted on Jan 07, 2008

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