Author: Andrew Georgakopoulos - SV1DKD

Prevent TVI & RFI with the PB-LPF1500-54 Low Pass Filter - Unboxing & VSWR Testing (video)

Prevent TVI & RFI with the PB-LPF1500-54 Low Pass Filter – Unboxing & VSWR Testing (video)

Afraid of causing TVI / BCI / RFI / EMI? Well, you can prevent against this, by installing a high-quality Low Pass Filter such as the PB-LPF1500-54 HF + 6 Meter LPF from LOW BAND […]

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6m (50.1MHz) Far Field Plot of End-Fed Half Wave Antenna

End-Fed Half Wave (EFHW) Antenna Modeling with MMANA-GAL

I wanted a quick & easy to install high-power multiband wire antenna for field-day and temporary operations and I’ve been hearing a lot about End-Fed Halfwave antennas lately. So I recently purchased the EFHW-8010-2K from Myantennas.com which […]

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KVR Non-Directional Beacon Tower

Will the NDB “KVR” be heard again?

As 160Μ CQ WW CW begins tonight… I’m posting a few photos and nostalgic thoughts about the decommissioned high-power (KW) Non-Direction-Beacon “KVR” at Kavouri, in Vouliagmeni, Athens, Greece. In the photos, you can see the […]

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TIMEWAVE ANC-4: The Miracle of phase shift active noise cancelling! (video)

Above I’ve created a video demonstrating the “miracle” of phase shift active noise cancelling with the ANC-4 from Timewave My town had just put-up new LED-based street lighting (a multi-million euro procurement and they bought […]

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