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132 /135 The Cobra 132 mobile is the same as the Cobra 135A or B base. The 135A was the first Base radio I ever bought (Used). Not bad for a Xtal radio, I did fiind that the unit has a Master Xtal to allow for full conversion, My Original radio had a Mini Relay and a Dual xtal board...

popups.. Just hit stop after the page loads.. price I pay for a free site. Only the main page is hosted with the popups, the rest is hosted on CBTricks Servers.. If you want NO popups, start here: http://www.cbtricks.com/~rogerbird/2510/ also: http://rogerbird.net/mainpage.aspx or...

Manuals I have both the Lincoln and the 2510 Manuals here: http://rogerbird.tripod.com/diagrams/ Roger

RF meter Check all the board screws, typically a loose screw will cause the meter to stay at one level. Roger

no display.. Does the radio still transmit? If so, check the 3 capacitors on the display PCB. One of those could (usually) short out and the display will goe blank. Also check the voltage regulators on the Microprocessor board. One is 5v one is 8v. the output pin is right most pin...

I have mods. I have mods listed on my site.. http://rogerbird.tripod.com/ [one of the oldest mod sites for the HR series] I can do tuneups and mos too. Roger

Display issue.. Typically if the radio is txing but the display is 8's, its caused by a bad capacitor on the display PCB. [probably C501 or c503) the fact that it doesn't tx, could be unrelated to the display issue. but, it could be a faulty regulator on the Microprocessor PCB. The lack...

Radio Repair Yes, I could check it out for you. I have sent you a PM. You can email me at Rogerbird1 @ netscape.net Roger

power VR4 am VR5 ssb ALC

HR2600 info Am power control is VR4 SSB ALC is VR5 Roger

Check this You may want to check the Bias Diodes on both the Driver and final, I would also check the driver as well, If your getting full output when its working it may just be the 2SC2166 driver going bad. (lost cheaper to fix) Is the Final heating up? (check the temp, also check the...

TX prob Check Q136 and Q125. Q136 is TX control and Q125 is the TX Regulator Switch. Q136 RX Voltages : Emitter = 0v Collector = 8v Base = 7.9v Q136 TX Voltages : Emitter = 0v Collector = 0v Base = 0.7v Q125 RX Voltages: Emitter = 7.4v Collector = 0v Base = 8.0v Q125 TX...

Yep Cheech, you were 100% correct. I Ohmed out the pads the SMT resistor sat on and it showed High Resistance, Cleaned up the solder job and reflowed the solder to the left side of the resistor and got the correct reading. Re-checked the radio and all the freq's worked. Another local that had...

AMC Have you tried adjusting the AMC? or The AM Mic Gain Mod and readjusting the AMC? See: http://www.cbtricks.com/~rogerbird/2510/micgain2.htm This wont be Booming , but will allow for more AMC adjustment, from approx 70% to 100%. You could use the Astatic D104-M6B - I think...

Thanks I will have to check that for him. Hope that is all it is, he was really excited to get that radio. Roger

Thanks Thanks, and glad to hear the radio is working good for you. :) Roger

chipswitches Hi, Yep I still do chipswitch mods, But Last time I got them Bill said it was getting harder to find blank chips, I currently have 3 left. I hope its not the last 3 I ever see... Roger

Missing frequencies Just had a friend buy one, and he states it is not transmitting on channels randomly through out the bands. He made up a chart and it is something like 40 or 50 channels that do nothing - No TX no RX. And another one that was sent in for losing TX in Hi power, now...

to answer Rf Overlord... Yes I am still working on radios.. Roger

Vari Pwr and Dead key... Hello, I have missed most of this post til now, Lets see if I can help.. The Mod states that the Vari Pwr will affect the AM and SSB key. The Mod does not affect the Modulated signal on AM .. If the radio was peaked and the AMC was left untouched you need to...