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Gary @N8DMT
@n8dmt@mastodon.radio  ·  activity timestamp last week

Exploring lower cost alternatives in measuring RF filter frequency response… Added a RTL-SDR to my SATSAGEN controlled scalar network analyzer setup just to see if how well it might work. TLDR: It works pretty well! Isolation between TX/RX is improved with this setup. Details in the blog post at: https://qsl.net/n8dmt/pluto-rtl-sdr-and-satsagen/index.html
#HamRadio #TestEquipment #RTLSDR

N8DMT

Pluto + RTL-SDR & SATSAGEN

Have been using ADALM Pluto SDR with Alberto IU1KVL's SATSAGEN software and wondered if there was benefit to using an…
Screen capture of SATSAGEN running on the Ham Win11 PC, with the software controlling the RTL-SDR receiver and Pluto SDR transmit source. A frequency sweep is running from 70 to 1200 MHz. The plot shows the reference line at 0 dB and the classic low-pass filter shape below that the Mini-Circuits SLP-300 filter provides (attenuating frequencies above the pass band up to 300 MHz).
Screen capture of SATSAGEN running on the Ham Win11 PC, with the software controlling the RTL-SDR receiver and Pluto SDR transmit source. A frequency sweep is running from 70 to 1200 MHz. The plot shows the reference line at 0 dB and the classic low-pass filter shape below that the Mini-Circuits SLP-300 filter provides (attenuating frequencies above the pass band up to 300 MHz).
Screen capture of SATSAGEN running on the Ham Win11 PC, with the software controlling the RTL-SDR receiver and Pluto SDR transmit source. A frequency sweep is running from 70 to 1200 MHz. The plot shows the reference line at 0 dB and the classic low-pass filter shape below that the Mini-Circuits SLP-300 filter provides (attenuating frequencies above the pass band up to 300 MHz).
Photo of a RTL-SDR receiver stick testing a Mini-Circuits low pass RF filter with a Pluto SDR as a transmit source.
Photo of a RTL-SDR receiver stick testing a Mini-Circuits low pass RF filter with a Pluto SDR as a transmit source.
Photo of a RTL-SDR receiver stick testing a Mini-Circuits low pass RF filter with a Pluto SDR as a transmit source.
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