[time-nuts] WWVB BPSK Receiver Project? (fwd)

[Charles P. Steinmetz]

gary wrote:

>OK, assuming type 61, it is 0.1%/deg C.

IME, Type 78 is the usual choice for resonant antennas below 200 kHz 
(tempco of initial permeability = 1.0%/deg C).  I have seen Type 33 
used for broadband LF/MF antennas (tempco of initial permeability = 
0.1%/deg C).  Type 61 is generally not used below 200 kHz.

Best regards,

Charles