20141220

ISS SSTV pirctures. Me, too.

Hi.

ISS crew sends some nice SSTV pictures from outer space to earth.







As you can see quality isn't that good. I don't know if it is a problem with my antenna...

Setup:
COMMTEL COM 212
DIY QFH
MMSSTV
SAT AMP

I hope next time to get better quality pictures ;).

20141214

WSPR: RTLSDR vs FRG100

Hi.

Yesterday I compared WSRP with two different RX. The first was RTLSDR (E4000 as direktsampler) and YAESU FRG-100. Both on same antenna. 12m wire on 9:1 unun.

The result is not that much different as I expected. Have a look at this animation. It shows stations from within Europe on 30m band.

WPSR on 30m band


Even if the FRG-100 has bigger SNR (-70dB vs -50dB of RTL) WSPR gets not more stations.

Remeber: this is not a high end scientific research! Hower, it's interesting to see that WSPR is able to decode nearly same stations.

Setup:

WSPR
12m wire
9:1 unun
RTLSDR e4k (SDR#)
YAESU FRG-100 (on soundcard)