Yet another receive loop is born.
The construction is similar to the first 500 kHz loop, i.e. cardboard box loop, but made with Litz wire and with only 6 turns.
The calculation of resonance frequency found here indicates a frequency range covering the whole of the 160m and 80m band, and this looks like what I have.
The coupling is made with a further full loop, and it looks like that creates a too hard coupling to the antenna (not really unexpected), making the antenna rather broadband.
Later this week some experimentation on the coupling loop size is in the planning.
A QRP CW Contact (Video) with the Winterfest MXM SupeRX/TX 40 (1 Watt,
Crystal Controlled Transmitter)
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*I picked this transceiver up at Winterfest for one dollar. 40 meters.
Superhet receiver with 455 kc ceramic filter and 2 NE602s. Crystal
controlled one ...
4 hours ago
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