Tag Archives: ft817

OH3SPN FT8 Activity

Posted on January 18, 2019 by Steve Netting OH3SPN

I’m now active from Tampere, Finland using the call OH3SPN, primarily FT8 on 30/20/17m due to antenna restrictions; FT817 (typically 2.5W out), G4ZLP MinoProSC interface, indoor SPX-100 antenna or short wire connected to LDG Z100 Plus. I’m very happy to report … Continue reading →

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Multi Band Slinky Doublet

Posted on April 11, 2016 by Steve Netting OH3SPN

Designing an HF antenna for Swindon Makerspace presented several challenges:- Routing coax from Makerspace to the roof is potentially tricky High external vertical antennas would require lightning protection No convenient external earths available Counterpoises impractical due to size Large horizontal … Continue reading →

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FT817 Chinese TCXO and Collins 2.3 kHz SSB Filter

Posted on February 16, 2015 by Steve Netting OH3SPN

Operating on the crowded 40m band has made me appreciate the need for good filters. I’d read many comments regarding filter brands and bandwidths, plus viewed several videos that show an FT817 with collins filter fitted and the author stating … Continue reading →

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