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If the VCO output stops, that might also give you the same indication. A spectrum analyzer should tell you, or even an RF voltmeter. Your original topic stated TX VCO issue and you're still seeing

Yes, exactly..... I did the bbs thing too at 1200 baud. Bear in mind though that was 1200 all to yourself all text, and not shared. The baycom modems were a good solution for packet on the cheap if

AM 7910 Baycom or A&A Electronics....Still have mine....Software did all the encoding/ decoding 73 Mike - N7ZEF

I once owned a 1200 baud modem that hung off the com port. A TNC was far too expensive for me back in the 80s. From a faded memory the modem chip was called something like World Radio xxxx. It was

Short answer: *IT DEPENDS.* I use them all. - *Analog FM* , for it's great audio quality.? I work in noisy equipment rooms in a broadcast facility, FM is *LOUDER and more intelligible* on our

First off how much data do you have to pass? Remember amateur packet mostly died from its heyday when everyone came to realize that a 1200 baud shared channel was the greatest thing since sliced bread

Hi Bob- Swapped the VCO's again, RX VCO on the TX, and vice versa. Was stable about 10 minutes until the first time the ID came up, then it unlocked, recovered, and after trying a few TX it fell out

Like this? <https://kantronics.com/kpc-3/> Bob NO6B

Does anyone make a commercially available product, that is relatively inexpensive, packet radio node? this will be in the 160 Mhz range and used much like the amateur packet network is used, only for

Swap the VCOs again, align both of them, and let it sit for 5-10 minutes to see if you get the same problem. The 38uA meter reading is not critical as long as it's between about 10 and 45 and moves

Hi Sam! Yep, I did. I'm thinking the next step is to replace that last cap on teh interconnect board, baybe a voltage is going wonky after a few mimutes due to that. I havent looked at it yet that

I missed my coffee today sorry. I see now you cleaned them already!

Hey Tom! Yep, sounds like the TX VCO needs a scrub. Definitely hit both while you’re at it. If the problem persists, then we can start attacking the actual circuitry of the TX VCO, or I can send you

Yep, like I said. They both need precautionary cleaning. Will save you headache down the line trust me.

Totally agree on the spurious transmitters In the 1980’s and 90’s local hams had to DF at least 3 Marti’s that started spurring and getting into local 2M ham repeaters. One was about 40 miles

Hi, Take the VCO units apart they? like Ge Mastr Series develop whiskers. I experienced this on a 900 station last year.? was doing all sorts of strange things. I took detoxit spray and a compressed

Hi Sam! When this trouble started the first thing I did was clean out the VCO's. I Just swapped the TX & RX VCO's. The RX locked immediatly with the TX VCO in it, just had to peak it a little to get

As technologies progress, variety widens under our very wide tent of amateur radio. The "Original Digital" is, of course, CW. It's very '1' or '0' by nature & wins the range war. That said, for voice

"Wide band"? To me WBFM is 15 kHz deviation (60K0F3E). Bob NO6B

Whoops, hit send too soon. Try swapping the VCOs just to see if TX will stay locked. Obviously not a permanent solution, they are different parts. But if it remains locked when you swap, then we can