Hi: Lesscom boards for 2824 or 2816 are almost 3 times as much as 1 from Ing Maurer,he ships from Austria
Or if you lucky to finds these on ebay or amazon
https://cbworldinformer.org/cb_world_961001_2.htm
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Low channel mod for UPD-2816
- Thread starter sus
- Start date
Or if you lucky to finds these on ebay or amazon
https://cbworldinformer.org/cb_world_961001_2.htm
I found a few of these SPECTOR SP-41 kits in some of my inherited stuff. I think it's close to the Galaxy kits for 29 etc.
Not sure if it's relevant here or not, it does have upper and lower setups, the chips are shaved on them.
There's a list of radio applications on the .pdf.
Not sure if it's relevant here or not, it does have upper and lower setups, the chips are shaved on them.
There's a list of radio applications on the .pdf.
While I can't prove anything, the physical layout of that "Spector SP-41" kit looks about like what you'd expect from the diagram in the link Techniloco posted. Frequency coverage appears to be identical as well. Odds are that it's the same circuit, so the chips would be a 7493 4-bit counter and a 7400 quad NAND gate. Both of which are still available. So they went and shaved them for nothing.
I have 3 of these. If someone wants to try one, it would be the cost of shipping.
I remember installing a few of these back in the 1980s. The tripler coil's setting becomes both touchy and critical. Found that the temperature swings in a mobile installation would mess with the tripler settings just enough to cause intermittent trouble. Base station users didn't seem to have this problem.
Never got around to trying to analyze just what it's doing back when the numbers were scraped off the chips. Still don't have the picture of exactly what changes it is making to the PLL.
73
Never got around to trying to analyze just what it's doing back when the numbers were scraped off the chips. Still don't have the picture of exactly what changes it is making to the PLL.
73
I know the post is a year old but do you have any of the N kits im willing to buy one if possible. Im here in Boston Ma.
Looks tempting to just make a batch and see if it works like the original. Won't let go of the original until I'm sure I can duplicate it.
73
73
Do yo have a picture of the back of the pc boards Ill have some boards made and send you some.
I know this is an old post but mentioned they have upper and lower channels. I installed one in a 29ltd and also a TRC465 ssb and wondering how to get the lower channels below ch 1. thanks
Yeah I saw your video you posted on your YouTube channel and had the same question why no lowers uppers on an am only radio seems pointless no ssb