Search found 34 matches

by VK3MHZ
Thu Aug 15, 2019 1:24 am
Forum: General
Topic: Electric Fences
Replies: 3
Views: 618

Re: Electric Fences

LW needs a long aerial the fence in that case. I would try feeding the fence with a grounded 11 mm coaxial cable with a serial coil on the device side. The coaxial cable acting as the capacitor of this basic low-pass filter. Coil could be replaced by a resistor. Thanks. Problem is I am not using a ...
by VK3MHZ
Tue Aug 06, 2019 10:11 am
Forum: SDRuno
Topic: Digital modes within SDRUno?
Replies: 2
Views: 405

Re: Digital modes within SDRUno?

With most digital modes it is pretty easy to get audio into companion software, VB Cable for Windows is one. I think due to their being so many well established digital mode decoder software packages available it would probably not be a viable thing payment wise. Especially when you consider you can...
by VK3MHZ
Tue Aug 06, 2019 10:01 am
Forum: New Users' experiences
Topic: wav file recording
Replies: 2
Views: 369

Re: wav file recording

It would be great if SDRUno also included a record function that allowed you to record the current audio on the current frequency to a wav file. Maybe one day. I am not a programmer so I don't know the implications of adding such features. All this aside, you can still record audio from SDRuno with ...
by VK3MHZ
Tue Aug 06, 2019 6:15 am
Forum: General
Topic: Electric Fences
Replies: 3
Views: 618

Electric Fences

Does anyone have an effective solution (apart from turning it off!) to rid ones self of electric fence 'ticks'. Unfortunately one of the downsides to being on a farm with lots of space is typically lots of electric fences, miles of the damn things. I believe this is a pretty beastly unit at around 8...
by VK3MHZ
Mon Aug 05, 2019 4:32 pm
Forum: SDR Antennas
Topic: DCF 77 77.5KHZ
Replies: 17
Views: 1958

Re: DCF 77 77.5KHZ

ernestyn wrote:
Mon Aug 05, 2019 3:19 pm
Dear VK3MHz,

the post is: viewtopic.php?f=8&t=4788
Thanks mate.
by VK3MHZ
Mon Aug 05, 2019 8:19 am
Forum: SDR Antennas
Topic: DCF 77 77.5KHZ
Replies: 17
Views: 1958

Re: DCF 77 77.5KHZ

I am glad you wish to experiment antennas for lower frequency reception from far away. If you experiment with the Langford antenna, very easy and simple and cheap to make look up the post of SDRguy22 in this section we can get your results in reception and then make more perfection to complete capa...
by VK3MHZ
Fri Jul 26, 2019 6:20 am
Forum: SDRuno
Topic: ADS-B very poor reception - Why ?
Replies: 15
Views: 1204

Re: ADS-B very poor reception - Why ?

Patrick; I have never used SDRuno in conjuntions with Dump1090. Just merely monitored the squitter's with SDRuno. For ADS-B I run dedicated RPI's and Dump1090. As like Mike, I have also done tests with very average antennas. My first ADS-B antenna was a SO-239 chassis socket, with a 1/4 wave-length ...
by VK3MHZ
Thu Jul 25, 2019 3:44 pm
Forum: SDR Antennas
Topic: DCF 77 77.5KHZ
Replies: 17
Views: 1958

Re: DCF 77 77.5KHZ

Thanks to those who replied. Space - As I said previously, not really any issue. Noise - Again not an issue. Height - Only problem as previously said. Should I look at a vertical antenna, or is horizontal sufficient. Keep in mind the goal is to receive some European LW broadcast stations, if at all...
by VK3MHZ
Thu Jul 25, 2019 3:34 pm
Forum: SDRuno
Topic: ADS-B very poor reception - Why ?
Replies: 15
Views: 1204

Re: ADS-B very poor reception - Why ?

I guess the first question that should be asked is if you were in a high traffic area for planes? Secondly, of the antennas you were using, a log periodic would be directional. The co-linear may not have been the best choice at such a high elevation either. As it would have a reasonably flat angle o...
by VK3MHZ
Thu Jul 25, 2019 3:23 pm
Forum: General
Topic: Difference between Rpi 3 and Rpi4?
Replies: 7
Views: 1047

Re: Difference between Rpi 3 and Rpi4?

As Andy stated it really depends on what your wanting to do on it. ADS-B/AIS, Web/FTP server, VHF/UHF RX with a dongle and something like GQRX - RPi will do all these without any problems. Unless you are running CPU/Memory intensive programs, then the RPi4 might be a bit of overkill. Also note with ...