Tuesday, 17 January 2012

Winter Hill

On Saturday I did a SOTA activation of Winter Hill G/SP-010
I used 70cm FM from my FT-817 into a W50 colinear. The pole is so short because I brought the wrong sections, so I could only use the top one.
Afterwards it was tea at Taybarns, Wigan.

Photos taken on my HTC Hero phone camera.

Thursday, 12 January 2012

80m noise

Flex 1500 on 80m on the wire, about -91dBm of noise in a 2.4KHz bandwidth.
It's what I've always wanted, a radio which displays proper signal levels (dBm).

Connected to the WSPR software using Virtual Audio Cable (2 lines) and Com0Com (WSPR using COM5 for CAT, Flex 1500 using COM15). PTT and frequency changing is via CAT, the Flex 1500 appears as a Kenwood TS2000.

I've been trying remote control of the radio using TeamViewer and Skype. Set up 2 different Skype accounts, one at home and one on my laptop. Set the home one to auto-answer and use the audio from the Virtual Audio Cable. So now I can tune the Flex 1500 and listen to it from anywhere.
TeamViewer has an Android app, so I can still check up on the home PC using my phone, even if it's hard work scrolling around my 1920x1080 desktop on a 320x480 phone screen.

Wednesday, 4 January 2012

Time for a new colinear

After 5 years on my chimney, it looks like my Watson W300 has had it. It had been used a bit before that as well, as I'd had it since 2000.
Recently I'd been noticing that received signals would be lower than normal until I transmitted, and then they would go back up, but when checking the SWR everything was OK. I thought this might have been a bad connection in the coax plug indoors, but after changing the plug it did exactly the same thing.
Then yesterday, which was very windy, the SWR was actually changing on transmit (between 1.3:1 and 4:1), and the received signals were varying without me doing anything.
It might just be the plug at the antenna but as the pole isn't moving it seems more likely to be the antenna. Either way it needs some work doing on the chimney. I think I'll go for a new tri-bander, I've got a 50MHz half wave vertical in the loft but it picks up a lot of noise.