Spurious emissions from WLN KD-C1 vs transmissions from Yaesu FT1XD, Yaesu FT60R, Explorer QRZ-1

Portable QRP QSO - Amateur radio contact with JJ0WON around 3,000Km distance de DU2XXR/1

Feb 28, 2024

Compact amateur radio HF go-kit with the USDR+

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Deploying my portable HF go-kit with the USDR+, QRPguys EFHW

Feb 21, 2024

First DX contact with my portable USDR QRP rig with HL4CDA de DU2XXR/1

Feb 21, 2024

Checking and adjusting PA settings on the USDR portable QRP HF software-defined radio

Dec 25, 2023

Adjusting filters and settings on the USDR portable QRP HF software-defined radio for optimal rx

Dec 25, 2023

Using CTCSS (Short #175)

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OM0ET