Search found 36 matches

by Mike2459
Sat Feb 24, 2018 6:54 am
Forum: SDRuno
Topic: VFO & LO for dummies
Replies: 14
Views: 304

Re: VFO & LO for dummies

I always use low-if on HF and LF. Compare the two while tuned to around 300 khz at night when MW broadcasts are strongest. Images everywhere on zero-if.
by Mike2459
Thu Feb 22, 2018 5:35 am
Forum: General
Topic: RSP2 operating and/or Bias-T supply on over a long time
Replies: 5
Views: 225

Re: RSP2 operating and/or Bias-T supply on over a long time

That crossed my mind as I was writing my reply. The problem may be as simple as a bad connection in the feedline. A common and sometimes difficult to find problem when it is intermittent. Good luck.
by Mike2459
Wed Feb 21, 2018 3:19 pm
Forum: SDRplay related
Topic: SDRPlay RSP1 & SDR#?
Replies: 9
Views: 487

Re: SDRPlay RSP1 & SDR#?

If that's the case then why would anyone want to buy this product?
by Mike2459
Wed Feb 21, 2018 2:56 pm
Forum: General
Topic: RSP2 operating and/or Bias-T supply on over a long time
Replies: 5
Views: 225

Re: RSP2 operating and/or Bias-T supply on over a long time

Susan, I was curious about your issue with the RSP2. I have an RSP2 that I use for satellite reception also. I use SDR Sharp to take advantage of it's QPSK Meteor plugin. The EXTio interface is required to communicate between SDRSharp and the RSP2. My LNA is inline powered and does not require the B...
by Mike2459
Thu Feb 15, 2018 6:06 am
Forum: SDRuno
Topic: signal at 8.693 mHz
Replies: 4
Views: 203

Re: signal at 8.693 mHz

You might be interested in this blog: diario SWL I5-56578 Antonio http://i56578-swl.blogspot.com/

A lot of loggings and posts on all kinds of digital stuff, primarily in Europe.
by Mike2459
Thu Feb 15, 2018 3:35 am
Forum: SDRuno
Topic: signal at 8.693 mHz
Replies: 4
Views: 203

Re: signal at 8.693 mHz

I ran a speed measurement on this signal around 01:30Z. It appeared to be 100 baud. And of course the shift was 850hz. Shortly thereafter it went down. It probably shifted to a night freq.
In my experience most, but not all, of the non-ham FSK nowadays is encrypted.

Good luck.
by Mike2459
Sat Feb 03, 2018 9:07 am
Forum: SDR Antennas
Topic: Antenna Recommendation for L.E.O LRPT
Replies: 4
Views: 517

Re: Antenna Recommendation for L.E.O LRPT

Thanks Norm, that's a link I missed.
I have been considering this double crossed dipole design: http://www.qsl.net/py4zbz/DCA.pdf
by Mike2459
Fri Feb 02, 2018 1:12 am
Forum: SDR Antennas
Topic: Antenna Recommendation for L.E.O LRPT
Replies: 4
Views: 517

Re: Antenna Recommendation for L.E.O LRPT

About 15 (or more) years ago I built a QFH for the 137 MHz band from a broomstick, some plastic rods, 75 ohm coax and a few cable ties to hold the coax in place. The hardest part was soldering the steel coax shield. I had to use acid core solder. Used an inline TV signal booster as an LNA. It's moun...
by Mike2459
Tue Jan 30, 2018 9:11 am
Forum: SDRuno
Topic: SDRUno vs. Others
Replies: 8
Views: 719

Re: SDRUno vs. Others

rzar66: My experience with SDRUno is similar to yours. I can operate on my Intel Core2 2.5 ghz Dell laptop at the full sample rate with 32 bit Windows 7 but on my Win 7 64 bit 3.2 ghz 10 core cpu system SdrUno chokes when the SR exceeds 5 Mhz. As pgoelz suggests, and I concur, the bottleneck may res...
by Mike2459
Tue Jan 16, 2018 5:04 am
Forum: SDRuno
Topic: 2 minor issues
Replies: 6
Views: 500

Re: 2 minor issues

Roger: Thanks for the info. I was using RF Gain - now switched to Gain Reduction. Manual AGC seems to be working as it should.

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