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I completed the mod to allow use of a cobra wired mic today on the Trinidad III as described above. I am having a problem I am not familiar with. When I key up with No modulation my carrier has ripples in the output ,( seen on O Scope) The output varies up and down on the watt meter I...

WOW that's pretty cool, With your explanation the light went ON about how a PLL works. The Trinidad III used a PLL Board and later CB used a single PLL chip to synthesize the channels?? Is that correct? I appreciate all the Help Thanks Plumber-G

The SBE Trinidad III has a PLL I think what I am asking is how do I use this information?? I don't expect you to give a class just point me in the right direction.... of course if you want too I am all ears Thanks

I got it ! Think substituting a 2n3906 would work OK? Thanks for the help

I downloaded my first Sam's Photofacts yesterday and need some help. To clarify my skill level I am really a Plumber who works with Pipes and ..... I know there is a way to determine if the circuit is working by measuring voltages at different points, I assume that is what the black boxes with...

I was thinking of installing a new power supply and amp inside my Trinidad III, beautiful case would make a real sleeper

NoMadRadio is the drawing correct? Thanks Plumber-G

Hello I just got a SBE Trinidad III when I plugged it in the transmit was a little iffy, work sometime sometimes it wouldn't, thought I would change the microphone to see if it was the problem, sparks flew and I blew a fuse. Now when I connect any mike to the radio it blows a fuse (low voltage...

Just curious Has anyone gotten a update on CB Tricks ??

Handy Andy I haven't expresses myself adequately. I know how to make text bold in the body of the post, I am talking about the "subject line" When I post a Post the subject is not in bold however when you replied to my post yours was bold. So my question would be is the subject "How Come My...

OK OK I know how to make text bold using the text editor, But when I create a message and look at it in the forum it is not bold?? is this because I am looking at my own message after it has been posted?? Does everyone have this happening?? or am I special

Thanks for the schematic, I think there was slight changes it appears the upgraded the final to a nec c1307 from a 2sc1239, but I have a much better grasp of what i am looking at. Do You have any thoughts on the waveform?? Thanks Plumber-G

How come my post are not in bold print?? Am I doing something wrong or just to stupid to know<GRIN>

Sorry I had a Temporary Lapse of Judgment

We had a guy in the Bay area, All he wanted was to be included....... ever try inviting him to a break or to talk??

Well I did it now <GRIN> forgot to turn the antenna switch to the radio I was testing and my output dropped to about 1 watt, brought it back to the bench, No output and it blows the 3 amp fuse when I transmit. Tried transmit with 12 volt supply did not blow fuse but no transmit, Step-down...

Hello Trying to find alignment procedures for a Cobra 139 ( NOT XLR) Bought unit at ham swap has low output and bad channel switch (switch wafers are good centering device on switch is bad. Looking for options Thanks Plumber-G

NoMadRadio I think you hit the nail on the head, I bet the radio was in "AM" mode. I couldn't figure out why the fuse would blow, as I had the meter set to 200 MA and the expected measurement was 50ma. I also had checked this before and the meter worked perfectly. Thanks Guys

I found the problem Junction J14 was not seated properly and causing the erratic voltages, I now can dial in the IF coils LSB is spot on but USB fluctuates about 10Hz. Now not trying to sound as dumb as I feel, Is there some special way to measure milliamps ? I have blown a couple of fuses in...

Andy Just to be current both usb and lsb are flaky I will keep at it and report back, Thanks for all the help Plumber G