The loop will be tuned (!) but hopefully to a freqency much above 60kHz by the inter-turn and turn to screen capacitance. Also hopefully this will be a low Q resonance and the phase frequency response at 60kHz should then be stable with ambient conditions. Interestingly a lot of the modern LF and VLF Off-air Standards use ferrite rod antennas and there are known problems with those, Quartzlock advise a air loop for critical requirements.
Alan G3NYK ----- Original Message ----- From: "Arthur Dent" <[email protected]> To: <[email protected]> Sent: Sunday, October 03, 2010 5:09 PM Subject: [time-nuts] 60kHz Loop antenna > John-…”HP's loop for the 117A is not tuned, as I rember, but it > is followed with a narrow band amp.“ > > Both the nuvistor and FET versions of the loop show capacitors across the loop winding to tune it. > http://www.leapsecond.com/museum/10509a/ > > -Arthur > > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
