5 pin converter killing a radio?
D-104 lollipop wired for 4 pin, using a 5 pin converter into the 148. I have been trying to set up the mic listening to a SDR about five miles away. Can do a few test keys to adjust the mic before the...
View ArticleRoyce 641 PLL sealed can SCHEMATICS diagram
I thought I'd throw this out there, figuring no one has this info but who knows without asking. I would like to get the schematics diagram/service data for the CB am/ssb base model 641 (PLL module)......
View ArticleCleaning up Interference Noise???
Hi, After installing my Uniden 980, I'm noticing some (not a lot...but) Interference noise coming from the AC Fan, and Windshield Wiper Motor! I am using #4 wire coming straight from battery for power...
View ArticleLooking for Gold?
Here's one for ya! View attachment 46699 https://www.ebay.com/itm/COBRA-29XL...2349624.m46890.l49286&mkrid=711-127632-2357-0 Brand new still in the box as normally heard on channel 19 near the petro!
View ArticleMaximum Swing Power?
I am in the market for a new base station and am considering a Galaxy-2547 because it fits my budget and has very good reviews. I currently own a Galaxy DX-959 and I know that the innards of the 2547...
View Articleamplified or pre-
does anybody know if there is a difference from an amplified mike to a pre-amplified and if any advantges i have a non amplified tug-8 mike and was looking at this=https://www.ebay.com/itm/174339450360
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US WWDXers: Will you be getting a FM rig?
I know FM CB is not a new thing in the rest of the world so this poll aimed at the US users here. Now it looks like FM will become legal soon does anyone plan on getting a FM radio? View attachment...
View ArticleRefurbishing D104 T-UP9 Microphone
Recently pickup this microphone. I’ve fixed several wiring/solder issues, pinched wires, wire strands on circuit board, cleaned the relays, stopped them from squeaking and I believe the 5k...
View ArticleHr2510 distorts with high volume
I scored a 100% mint completely stock untouched inside president hr2510. I got REAL lucky on this one. It works outstanding. The only issue i have found is, connected to an external speaker when the...
View Articlegalaxy dx 949 dual final mod biasing ?????
Ok I know that some will say its not worth it before I begin! I was wondering when adding the 2nd mosfet to a 949/959.... On cbtricks its going off of the 1969 version it really doesn't show biasing...
View ArticleThe sun is firing, yet no skip :(
I dont know if you guys have been watching the latest news on the sun but it is firing off major flares, cme's etc. Even massive sunspots all over. As of this post the numbers are: SFI 91 SN 77 A 14 K...
View ArticleRFT PP100 transistors vs DEI 2879s
Hi all, How have the RFT PP100 "power pill" transistors that Xforce and others have been using been holding up and how much less/more power do they put out vs the Toshiba 2879 and the DEI 2879s? Are...
View ArticleMathamatical equation for 14.91mhz,15.81mhz?
I have a Cobra 29 LTD CLASSIC I just purchased, another one? The radio has a board with 2 crystals in it, 14.91mhz and 15.81mhz, along with a 10.240mhz and a 10.695 I assume, but I cannot see it...
View ArticleJust started
Morning all, so this just started and is getting more sporadic. I key up and talk the amp is still keyed here click light is on however my needle on radio goes to nothing and my talk back goes silent....
View ArticleMidland 13-898B frequency issue
Hey all, I have been fiddling with a midland 13-898B for awhile trying to figure out why it is so far off freq on a few channels. For example, channel 14 transmits at 27.104 instead of 27.125mhz. The...
View ArticleCobra 148 GTL PC 412 board D78
Hey guys, having trouble finding info for diode D78. I can find it on a schematic but not on a parts list to tell me what it is. Anybody know this one??? It is inline with the MB 3756 regulator (IC4)...
View ArticleWhy echo?
I need some help in understanding here. Why echo? What is the purpose of it? Even in my CB days I never liked it. The only time I liked it was my radio days when I was spinning disc's at a 10,000 watt...
View ArticleApparent engine noise only when squelch is active.
Sitting in the truck today, I noticed when the squelch is active, I have engine noise but here's the part that makes me wonder.....With the volume all the way down and the squelch off, there is no...
View ArticleWHO MADE THIS ??
I was wondering if anyone knows who was the OEM manufacturer of this radio. The screen printing on the component side is unique to this OEM, who is based in South Korea. I've seen this style of screen...
View ArticleElectrolytic capacitors assistance
Ladies and Gentlemen of wwdx, doing some old microphone rebuilding and some things are comics into question. There's various types of electrolytic caps from general purpose, non polar, low impedance...
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