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Tag: SDR

Anan7000/HPSDR and Icom IC-7300 S-Meter Calibration

February 6, 2019 n8ur 2 Comments

I’ve noticed that my SDR setup, an Apache Labs Anan-7000DLE transceiver used with the PowerSDR software, seems to rest the…

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Posted in: Ham Radio, SDR Filed under: 7000DLE, Anan, IC-7300, Icom, PowerSDR, SDR

Update on Update on P25 Scanner

February 12, 2018 n8ur 31 Comments

Since my updated post on building a P25 trunking scanner with a Raspberry Pi and an RTL-SDR dongle, I’ve created…

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Posted in: SDR Filed under: OP25, P25, Raspberry Pi, SDR

RTL-SDR.com Dongle Measurements (Part 1 — background)

January 24, 2018 n8ur 1 Comment

I’m using several USB “dongle” SDR sticks from RTL-SDR.com. These nifty $20 devices can receive from 100 kHz to above…

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Posted in: Ham Radio, SDR, Test and Lab Equipment Filed under: dongle, RTL-SDR, SDR

Update on P25 scanner — new version, and new installation instructions

November 6, 2017 n8ur 8 Comments

Since I posted my original articles on configuring the Gnuradio-based op25 P25 trunking scanner, there’s been a lot of progress…

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Posted in: SDR Filed under: P25, Scanner, SDR, Trunking

More Solar Eclipse Analysis (HF Propagation)

August 30, 2017 n8ur Leave a comment

I’ve continued processing the data generated from software-defined-radio recordings I made during the 2017 solar eclipse at my fairly isolated…

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Posted in: Ham Radio, SDR, Solar Eclipse, Test and Lab Equipment, Time and Frequency Filed under: Beaver Island, eclipse, SDR

First data from Solar Eclipse 2017

August 27, 2017 n8ur 1 Comment

I set up a smaller version of my mad-scientist stuff at our cottage on Beaver Island, Michigan (45 38 38…

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Posted in: SDR, Solar Eclipse, Test and Lab Equipment, Time and Frequency Filed under: Beaver Island, eclipse, SDR

Hermes SDR as spectrum analyzer

August 11, 2017 n8ur 1 Comment

I was fussing about signal generator output accuracy because I wanted to calibrate my HPSDR Hermes software defined radio (“SDR”)…

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Posted in: Ham Radio, SDR, Test and Lab Equipment, Uncategorized Filed under: Hermes, HPSDR, SDR, TAPR

$20 P25 Trunking Scanner (Part 4)

June 10, 2017 n8ur 4 Comments

With op25 successfully decoding the control channel, now you just need to set up the trunking configuration. To do this,…

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Posted in: SDR Filed under: Gnuradio, P25, Scanning, SDR

$20 P25 Trunking Scanner (Part 3)

n8ur 9 Comments

The info in this and in part 4 was aided tremendously by several folks on the “op25-dev” mailing list. Without…

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Posted in: SDR Filed under: Gnuradio, P25, Scanning, SDR

$20 P25 Trunking Scanner (Part 2)

n8ur 5 Comments

Here’s how to install the OP25 scanning software. If you don’t already have Gnuradio installed on a Linux system, do…

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Posted in: SDR Filed under: Gnuradio, P25, Scanners, SDR

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