Hi all, I have an obsolete (no data sheet available) Z-Comm VCO that I'm using for a low buck signal generator. Yes, I know it's noisy & unstable. It looks like there's a Vmod input on it. I'm mounting this to a "slash & cut" PCB - surface mount. I couldn't find any documentation at Z-comm on their N suffix VCOs. My question is, do I solder the unused Vmod to ground or just leave the pad open? Much thanks! :-)
Why not a pot?
John
Thanks for the idea! Attached a pot (for fine trimming),& started tweaking the pot & it snapped to another frequency! Seems it's not a Vmod in ,but it rather looks like a dual frequency VCO. ~1130-1880 MHz low, ~2060-2500MHz high @12V Vcc (V670DC01 - Ebay)
Thanks again!
In message , bart writes
Don't know about ground but I'd consider mid rail just to prevent (more) noise getting onto the output.
-- Clint Sharp
Hi Bart, I'm thinking about an swr meter for wifi antennas. Just how noisy and unstable are these VCOs? Do you have 1 or 5 to sell. Hows the slash and cut method working? My address is good, send me a private email. Thanks, Mike
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