Search results

Here's a schematic for the 60.

Years ago on the Yahoo CPI group there was a lot of discussion about this and no one was ever able to come up with a programmer that was able to read or write to any of those proms or eproms that were used in the Digicoms or CPIs.

Here's a schematic for it. I believe there is a CPI group on FaceBook that used to be on the old Yahoo group. Might find some info there.

Ebay sent out notices to sellers to set up an account with your bank or other financial institutions last year as they stated they were no longer allowing people to pay with PayPal. I kept receiving them in my email and in my Ebay messages until I finally did it. With PayPal it was an instant...

Looking at the schematics C79 should be a .1uf and C108 .022uf. The parts list shows C79 as a .1uf mylar and C108 as a .022uf mylar. The parts list also shows C79 again as a 15pf ceramic. It seems that there are mistakes in the parts list. I would say to go by the schematics.

I once sold the same radio 3 times on Ebay before someone would keep their hands out of it. I got it for partial payment for some work I did. It was a RCI 2980 and was in beautiful condition but didn't work. I replaced a regulator, aligned it and ran it for a bout a month. It worked great and...

Yes. I've seen that in two General Lees before.

I've seen radios do something similar to that when the crystal is bad. They will show the correct frequency and be on that frequency but then at some point the display just starts "rolling" and the radio is not on that frequency anymore until it's shut off and then turned back on again. Then it...

Check out Barketts. He states they are original ones that he sells. RF parts may be a place to check also.

They are a problem in the Trams. I've changed many myself over the years and have worked on many that have had them changed. I always run an old radio for at least a week before I'm satisfied with it and like you said it's always days after you think it's all set to go, more problems pop up...

The difference is that the SAM manual uses TP6 instead of TP8 to take the measurements from.

In the 50 years that I have worked on electronics, 45 of those for major corporations as an electronic tech only a few times did I ever have to change out a tantalum. The last company I worked for built equipment that has been running in their customers' facilities 24/7 since the mid 80's...

You can find the info in the parts section of the manual in case they may not be the original caps. There is no reason to use caps of extreme voltage value in circuits that are never going to see that kind of voltage. Most circuits in a radio do not run at the B+ voltage otherwise they would all...

Here is another copy of the same that may be easier to read.

Here is a list. This is from 2600 about 15 years ago. I hope he doesn't mind me posting this. I blacked out some of my scribbling. It's for the 40 channel model but 95% will pertain to the 23 channel.

Whenever one takes any type of switch apart it's best to mark the sections so it can be reassembled correctly. I always just draw a line diagonally across that type. One could also number or letter the sections.

If done correctly you can use 4 switches or a rotary switch and have no channel skips including the "A"s for 399 channels. But since the radio doesn't do 10 meters well without some more work, 3 switches or the rotary one will get you 299 with no skipped channels.

Also it's important to know that the counter is accurate meaning that it has been calibrated recently or you will never know if the measurements you are taking are correct and you could be making the radio worse.

Like TM86 said that cable for the PH163 style is the one. Belden/Volex model #17280 or Alpha 543. Belden/Volex model #17952 or Alpha 544 will work also. (The only difference is that they have the hot and neutral wires reversed.) The later built Tram D201 and the D201A used the same cord. They...