N1AAE - November One Alpha Alpha Echo

February 7, 2018 / N1AAE / APRS (Automatic Packet Reporting System)

APRS RX/TX I-Gate and Digipeater for less than $100

So, you want to set up a RX/TX I-Gate and Digipeter to send and receive packets on your Raspberry Pi over the APRS network? No problem. I was pleasantly surprised…

January 14, 2018 / N1AAE / Amateur Radio Satellites

Visualizing Satellite Doppler Shift

Per Wikipedia, Doppler Shift is defined as: The change in frequency or wavelength of a wave for an observer who is moving relative to the wave source. In regards to…

January 14, 2018 / N1AAE / Software-Defined Radio

Amplifying weak signals with a Low Noise Amplifier for your RTL-SDR

I wanted to add a Low Noise Amplifier to my RTL-SDR dongle to amplify weak signals received from ARPS, satellite and HF signals for FT8 and other digital mode decoding.…

January 12, 2018 / N1AAE / Amateur Radio Satellites

Adding Fox-1D to Gpredict

The Fox-1D/AO-92 satellite launched into orbit earlier today (Friday, January 12th) and can be added to Gpredict easily using the steps below. More information on this satellite can be found…

N1AAE Posts

APRS RX/TX I-Gate and Digipeater for less than $100

Visualizing Satellite Doppler Shift

Amplifying weak signals with a Low Noise Amplifier for your RTL-SDR

Adding Fox-1D to Gpredict