Uniden PC404 CB radio - Page 1
Forum section: electronics / general

author: Simon123
author_rank: Regular Contributor
timestamp: May 04, 2014, 07:28:45 pm
content: Hello!I have bought this cb radio, but i dont know if its am or fm?It has 4W output.I checked on the net and radiomouseum says its FM, but then i check which freq. are for what and it says AM.Its 27MHz device.

author: Towger
author_rank: Super Contributor
timestamp: May 04, 2014, 07:32:08 pm
content: In most countries the AM and FM CBs are on the same frequency. The main (only?) exception being in the UK.

author: DonRon
author_rank: Regular Contributor
timestamp: May 04, 2014, 07:39:31 pm
content: Hi Simon,should be FM:http://rigreference.com/de/rig/4977-Uniden_Bearcat_PC_404The Uniden PC40 model was AM.Cheers,Ron

author: Simon123
author_rank: Regular Contributor
timestamp: May 04, 2014, 07:41:52 pm
content: Thanks.Which one is more in use, so i can ask for radio check if FM is ?

author: DonRon
author_rank: Regular Contributor
timestamp: May 04, 2014, 07:52:23 pm
content: Hi Simon,which mode is more in use - I think this is your question?In Germany it's FM - I think no one is still operating in AM.Additionally single side band (SSB) is in use.Don't know how it is for other countries.

author: Fank1
author_rank: Regular Contributor
timestamp: May 04, 2014, 08:09:09 pm
content: http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CCYQtwIwAA&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DXLKqqLZ0_wM&ei=KJ5mU7nENsmtyATohoH4Cg&usg=AFQjCNG1P3F2SDlSvAms6oYcg0QIhMAgqQ&bvm=bv.65788261,d.aWw

author: Simon123
author_rank: Regular Contributor
timestamp: May 04, 2014, 08:11:09 pm
content: OK, Thanks

author: w2aew
author_rank: Super Contributor
timestamp: May 04, 2014, 08:24:09 pm
content: For what it's worth, CB in the US is 27MHz, AM and SSB only. No FM mode allowed. US has FRS handheld radios (license free) that are FM, but they operate in the UHF band.

author: Flump
author_rank: Frequent Contributor
timestamp: May 04, 2014, 10:53:13 pm
content: uk has 2 cb bands both fm only26.965 - 27.405 uk mid band27.601 - 27.991 uk 27/81 (legals) band

author: Flump
author_rank: Frequent Contributor
timestamp: May 04, 2014, 11:04:13 pm
content: The Uniden-Bearcat PC-404 is exactly the same as the Uniden Uniace 200 which is fm only and 27.601 - 27-901 they are easy to convert to put on the "Mid band" (the other UK CB band) by switching in a different PLL chip, the origonal is a TC9119 and the Mid band uniden radios use a TC9106 so you can easily make an 80ch radio by switching the two, I have 2 or 3 Unidens here I have converted over the yearsif you look iside yours the main chip behind the channel selcetor will proberbly be a TC9106there is also a uniden uniace 400 which is black fronted with black knobs and is uk mid band and fm

author: Simon123
author_rank: Regular Contributor
timestamp: May 06, 2014, 03:52:19 pm
content: Thanks, now i have found some yt clips on the net for uniace200How can you get 80chanels?Do you get the 41-80 chanels or have to use difrent selector?

author: ConKbot
author_rank: Super Contributor
timestamp: May 06, 2014, 04:17:10 pm
content: Quote from: w2aew on May 04, 2014, 08:24:09 pmJeeze, I thought the CB radios were FM given the nonsense like key-down competitions. Thought they relied on the FM capture to pick the winner. Guess they are just listening to both and seeing who's louder

author: Flump
author_rank: Frequent Contributor
timestamp: May 06, 2014, 08:14:00 pm
content: Quote from: Simon123 on May 06, 2014, 03:52:19 pm

author: Simon123
author_rank: Regular Contributor
timestamp: May 06, 2014, 09:38:50 pm
content: Thanks again.

author: vk6zgo
author_rank: Super Contributor
timestamp: May 07, 2014, 03:47:13 am
content: Quote from: ConKbot on May 06, 2014, 04:17:10 pmNope,the ones they use in the so-called "key-down" comps are AM------remember with AM you always have a constant carrier,unlike SSB,where ,the power output depends on the modulation level.I don't know if they even speak,------if not,you could say it is CW.