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Inexpensive Software Defined Radio Spectrum Analyzer < $10.00

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Old 12-06-2016, 07:19 AM   #16  
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Default Great feature.

Hi Pete,

Did it, but I was unable to "stretch" my data to fit the screen to get better detail. Even though I reset the parameters to 490-700 Mhz it didn't fit the whole screen.

In other words, I opened RTLSDR and re-set my parameters, then I clicked open compare and when the scan comes on the screen, the parameters have changed starting at something much lower that 490 Mhz.

Still, very handy indeed.



Any tips on how to take an old save and make it fit?

Thanks, Bob
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Old 12-07-2016, 04:14 PM   #17  
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My scans do the same thing. Not sure why? To expand the display click on the Zoom icon and with the crosshair, marque select the area you want to fill the screen. You can also Zoom in on a narrow range of signals to expand it out for closer examination. The Pan button (or the left & right arrows) let you “pan” through the (zoomed) display.



I did notice that the FM band scans (88-108 MHZ) show up in the Level Comparison window between 85-110 MHz. When you set the initial scan for 85 to 110 MHz and load it into the Level Comparison window it does fill the whole display area.
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Old 06-11-2017, 11:49 AM   #18  
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Default Zadig updated to version 2.3

All,

Zadig for Windows 7 and later was updated to version 2.3 (4.9 MB) on 18 Apr 2017.

http://zadig.akeo.ie/
Windows XP and Windows Vista are “NO LONGER SUPPORTED”, but older versions are still available via a link labeled “Other versions” on the above page. “zadig_xp_2.2.exe (5.1 MB) dated 04-Feb-2016 @ 10:47” appears to be the latest XP version and works well for me.

Pete
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Old 06-14-2017, 05:23 PM   #19  
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Default Inexpensive Software Defined Radio Spectrum Analyzer < $10.00 {Linux Install}

If you are interested in using an RTL2832U + R820T DVB-T dongle with Ubuntu Linux, I found an excellent set of directions in .pdf form that walks you through all the necessary steps @:

https://ranous.files.wordpress.com/2...tartv10-16.pdf

After testing that the dongle was working properly (Step 7) I had to go to the Ubuntu Software center (the orange briefcase with an “A” on the sidebar) and install the “Synaptic Package Manager“. Once that’s installed, open the Package Manager and under “Amateur Radio (universe)” scroll down to “gqrx-sdr” and install it.

When the “Configure I/O devices” pop-up appears, make sure Realtek RTL28xxUHIDIR is selected. Mine defaulted to RTL2838UHIDIR instead of the RTL2832U I see in Windows, but “gqrx-sdr” seems to work just fine.

Like SDR# in Windows, you can create groups (FM Broadcast, Weather Radio, VHF & UHF Air bands, 10 Meter Ham band and 6 Meter, 2 Meter, 220 and 440 MHz Amateur repeaters). Like SDR#, it also demodulates CW, AM (including LSB & USB) and both Wide (FM broadcast in Stereo & Mono) and Narrow band FM (police, fire & Amateur radio).

Tutorials can be found on YouTube & at the following link:

http://gqrx.dk/doc/practical-tricks-and-tips#more-229

Last edited by Pete Higgins; 06-14-2017 at 05:30 PM..
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Old 01-13-2018, 07:20 PM   #20  
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Do you think that the ANTENNA manufactures will go back too making a low band vhf tv ANTENNA. For outside
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Old 01-13-2018, 08:17 PM   #21  
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Default ANTENNA manufactures will make a low band vhf antenna?

Hi, Hdb91xg, long time since I've heard from you.

With the move away from the low VHF band by commercial TV I doubt it would be economically viable to manufacturer low VHF band antennas.

I'm in the Los Angeles market and don't receive any low VHF band channels. There are a few low band repeaters or translators still in use but not enough to justify new production. Probably the best bet would be some of the "all band" combo antennas that are still left. They had the added advantage of FM band response as well, but were really big with a lot of wind loading.
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Old 01-14-2018, 09:20 AM   #22  
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Hello Pete even with the brodcasting station moving too low vhf well I finally got my hands on one of the antnnacaraft cs,1100 hi& low vhf ,fm outdoor tv antenna
It's 15ft long and I only paid $50dollars for it the person who I got it frum used it
For 3months he said he was using it for fm radio he said he didn't have much luck
With it when I went too pick it up I could see why ock tree city I couldn't get it into my car fast enough what a steal for $50dollars because I did find one brand new
They wanted over $300dollars for it +shipping costs and that just alone was $100dollars well they say 1000,miles away you can receive with this antenna I
Will be installing it on a 100ft tower in March with a channel master 7777amp
In Springfield Massachusetts 01129 and yes I have a Ham rotor for it and no
Trees lol I will keep you updated on what I receive with the monster
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Old 04-05-2019, 09:40 PM   #23  
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I see on the bottom a message:

"Status error Errno 10061 No connection could be made because the target machine actively refused it"

So, I'm stuck. any ideas Pete?

Thanks, Bob


Bob,

That error message usually means there was nothing listening at the IPort you tried to connect to. Since it worked before, I'm guessing the Zadig install got messed up.

Try reinstalling Zadig and make sure you select "Options" & "List All Devices". From the drop down menu select RTL2832U or whatever your receiver shows up as and then click the "Install Driver" or "Reinstall Driver" button. You might need to reboot for it to be recognized? Hope this Helps.
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