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ROgerbirds My website was hosted there as well, it has not come back up on his servers. I have temporarily reactivated my server to continue hosting till he gets my directories back, ( I have not contacted him,yet, figured he was busy trying to fix it) My index page (main page is still at...

jumps Double check the wiring on the micro board, some of the connectors have the same number of pins and can be plugged in the wrong place. Rogerbird

Is this a Cobra 135 A or B? The xtal boards are different. The A series converts with a single xtal replacement. My radio had a simple relay that switched out the xtal hot sides, and left them with common grounds. x311. Change to a 13.000mhz xtal gives from ch 26 to CH 55. x311 should be a...

Always glad to be able to help. Roger

Display Caps Hi, Got your email, I will reply as I have here. There are 3 electrolytic caps on the Display board. you probably should try replacing all 3. see: Uniden HR2510 Service Manual C501 - 4.7uf C502 - 3.3uf C503 - 100uf There can be other issues but this is the best...

Still having the AM power issue. It is actually 200w in both High and Low power. I have replaced both VR9 and VR8 but no difference. I am guessing the power regulator stage for AM is the culprit. Anyone have a Transistor voltage chart for the power Regulator ckt? Roger

Voltage Sorry, I did not receive any emails.. Send to me At Rogerbird1@aim.com or Rogerbird1@hotmail.com You say the 7805 is putting out 10v? what happens if you lift the output leg? is it still 10v? remember to measure from the ground tab to the leg, some of the later chassis have...

Power loss Did you get this solved? Does it drop during xmit? If so It may need to have an insulator installed between the final and the heatsink. It is a common issue, the Chassi ground and Power ground meet at the uninsulated final mounting tab. I have seen this cause gradual loss of...

power Does it transmit, can anyone hear you? I have seen the meters go wacky, from loose board mounting screws, Start by making sure they are tight. All board screws. Main and CPU boards. If it isnt xmitting it may be a couple of bad Capacitors. I could direct you where to check, or...

Need a PLL for a 29 Do you got a upd2816c ? Got one here that is bad. Just want to get it going again. email me: Rogerbird1 @ aim.com (remove spaces)

Original SAMS CB tuning manuals I have one question: Has anyone ever seen a SAMS CB manual that ever mentioned 'SWING' when performing a tuning procedure? Roger

ANy thing Hello, I am wondering what I am doing wrong.. I have a 200 with a blown driver, (2nd time) It is now out of warranty, and the last time it was repaired in warranty. This time I have replaced the RD16hhf1 and performed the Driver Bias adj. SSB operates normally 10w/40w but...

Hello The center pin on the regulators is usually ground. If you are getting 10v out of a 5v reg, some thing is not right, check the caps across the input an output on the regulator. they can go bad and produce noise, oscillation if you will. and appear to be higher voltages. (still not...

Got your email, Got your email, but it was in my SPAM trap, So I got it late. GLad you figured it out. Roger

Frank Tomes This PDF is a copy of my website that I gave to Frank back in '98. Please visit my webpage for the updated versions of the mods discussed in this PDF. http://Rogerbird.tripod.com Roger Perales 'Rogerbird1' Rogerbird1@aim.com

One more thing Well now that I got that fixed, I need more info on the NightWatch lighting. This one does not light up. The meter and display lights and dims with the pushbutton control, but the NightWatch backlighting does nothing. I have the Schematic (Near Schematic) from CBtricks for...

Pinchy Audio Bob, You were right on! I replaced C90 with a different value, and SSB audio came up slightly and the bass response was much better. I have to determine what value I ended up with. C90 is a 2200PF, I tried a 220 pf cap but had no notable change, I have bag of SMT Caps and...

Pinchy Audio on SSB Any one of the audio mods fix that 'Pinchy' sound on SSB? Roger

2510 audio Problem. Try this, Replace C95 and C98 - Both are 10v capacitors and should be replaced with 16v or 25v capacitors. [Keep the Microfarads the same as they are. - 470us and 47uf] the 2 caps are in the audio circuit, and usually leak or short internally, causing all kinds of...

Kenwood forum on Yahoo Check out the Kenwood Forum on Yahoo groups. The 440/430 forum has tons of repair info and tips. The moderator knows a bunch about them . Got the repair info on my 440 and fixed a major issue fairly simply and now have a great base! Roger