Search found 13 matches

by Hinermad
Wed Dec 12, 2018 4:09 pm
Forum: RTL-SDR Discussion
Topic: Looking for education and advice
Replies: 4
Views: 1769

Re: Looking for education and advice

RTLSDR-Scanner might do want you want https://eartoearoak.com/software/rtlsdr-scanner. It's cross platform, and accepts GPS logging too. Thanks! I'll give it a look. I wouldn't bother trying SDR# with Mono, it's probably not going to work. I wondered about CPU compatibility. Raspberry Pi boards use...
by Hinermad
Tue Dec 11, 2018 6:21 pm
Forum: RTL-SDR Discussion
Topic: Looking for education and advice
Replies: 4
Views: 1769

Looking for education and advice

I've been using an RTL-SDR and my Windows PC to monitor local ham radio repeaters and gather usage statistics. I was curious which machines were most and least active. I use SDRSharp with the Frequency Manager + Scanner plugin, and it does well for what I wanted to do. Now I'd like to take this on t...
by Hinermad
Mon Oct 26, 2015 6:41 pm
Forum: Troubleshooting Help
Topic: USB arduino LCD showing frequencies...
Replies: 7
Views: 7717

Re: USB arduino LCD showing frequencies...

I read something about CAT implemented into HDSDR, maybe it could be useful or someone already has wrote/created something like this, I don't know, I'm completely newbie with arduino things... If I'm reading the HDSDR page correctly, the CAT interface is to control external radio hardware. You coul...
by Hinermad
Mon Oct 19, 2015 2:23 pm
Forum: RTL-SDR Discussion
Topic: Wan't to buy a RTL.SDR
Replies: 7
Views: 10120

Re: Wan't to buy a RTL.SDR

NattyFido wrote:I'm guessing those 'smart meters' probably won't have any receive capability and anyway, it's sounds like you want to defraud the power company, not a good idea!
It's also illegal. Meter tampering is a criminal offense, and can land you in jail for up to a year.
by Hinermad
Thu Oct 01, 2015 9:06 pm
Forum: RTL-SDR Discussion
Topic: hf sdr rtl help
Replies: 2
Views: 5817

Re: hf sdr rtl help

Hi Phill! HF is a nasty place to try to receive anything. Shortwave broadcasters and other commercial stations on HF use powerful transmitters, and since their signals can travel worldwide they can cause receiver problems worldwide. What might help is a preselector. It's a tunable filter that goes b...
by Hinermad
Thu Sep 24, 2015 7:35 pm
Forum: Off-Topic
Topic: frequency selective levelmeter
Replies: 5
Views: 15206

Re: frequency selective levelmeter

Unless there's an RF Output connection, that level meter's not going to help with your SDR. You'd have to hook your antenna to the meter's input, then hook the meter's RF output (if there is one) to your SDR antenna input. That would put the bandpass portion of the meter in line with your SDR, which...
by Hinermad
Thu Sep 24, 2015 7:30 pm
Forum: RTL-SDR Discussion
Topic: RF filter
Replies: 3
Views: 7007

Re: RF filter

I don't know about tunable filters for VHF and UHF, but if you search the Web for "SWL preselector" you should be able to find tunable HF devices. The MFJ 1046 might help:

http://www.mfjenterprises.com/Product.p ... d=MFJ-1046
by Hinermad
Wed Sep 23, 2015 2:29 pm
Forum: Off-Topic
Topic: frequency selective levelmeter
Replies: 5
Views: 15206

Re: frequency selective levelmeter

What model is your meter? I'm not aware of any that have a notch filter. The "frequency selective" part is usually a bandpass filter.
by Hinermad
Mon Sep 21, 2015 2:53 pm
Forum: Off-Topic
Topic: frequency selective levelmeter
Replies: 5
Views: 15206

Re: frequency selective levelmeter

A frequency selective level meter (or voltmeter) is more of a bandpass filter. Think of it as a preselector.

I didn't know you could get the RF out of one after the frequency selective part but before the level detector.
by Hinermad
Sun Sep 13, 2015 11:06 pm
Forum: Signal Identification Help
Topic: Replaying Wireless door-bell
Replies: 1
Views: 7854

Re: Replaying Wireless door-bell

If that schematic is accurate, I don't think there's any modulation other than being turned on or off with the switch.