Tag Archive : digital

/ digital

Yaesu FTDX10 has odd subcarrier on FT8

June 6, 2022 | Equipment | No Comments

While doing a lot of station work, moving antennas, updating cable runs, I’ve done a lot of antenna vector analysis, fixing grounds, removed a failed (defective?) AlphaDelta spark arrestor, and also listening to signal quality with my other HF Rig (Yaesu FT-991).

When checking 20m and 40m, I didn’t hear the clear, clean FT8 tone, but what sounds like an overwhelming hum. I recorded an example of this here.

Weird signal on FT8 20m & 40m bands.

Research into what this might be, continues. I’m considering shipping radio in for service, but don’t want to be without my rig for a month or so, and only find out nothing is wrong?

I’ve solicited opinion from other HAMs. Maybe I’ll find a solution that doesn’t involve shipping something to California.

Read More
By david.demartini

TI200I Costa Rica Bicentennial Special Event Station 2021.

September 26, 2021 | Awards, Events, QSOs | No Comments

Glad I could participate in the Costa Rican Bicentennial Special Event during the month of September.

A number of confirmed QSLs were made with the participating stations in Costa Rica. Contacts were made on 10m, 17m, 20m and 40m using FT8 digital protocol. There was a lot of traffic, and more than a couple of pileups, but even at though I’m limited to 100w, we were able to complete some solid contacts.

I’d like to thank the TI2HAS and the TI200I special event team for sending out such a wonderful looking commemorative certificate.

Congratulations on 200 years!

Read More
By david.demartini