[time-nuts] WWVB 60 kHz Loop Antenna Progress

Bill Hawkins bill at iaxs.net
Wed Oct 20 02:14:25 UTC 2010

As I understand it, 60 KHz information is so slow that phase
information is critical. Why would anybody use a resonant
antenna in that situation? The phase shift from day to night
is more than enough to work around.

I used a non-resonant antenna proposed by John Ackermann
against Z3801 outputs and got decent results, but not like
comparing the Z3801 outputs against a Cs standard. John's
antenna should be in the archives. Just 100 feet of RG-58
wound on a 4 foot diagonal PVC pipe frame, with the shield
split at 50 feet, IIRC. Tried resonating it, got unstable

If you really must work with WWVB, I have a Spectracom 60KHz
receiver and extras in a Tektronix rack or a Fluke 207 for
sale at moving sale prices. I never thought there'd be any

Bill Hawkins

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Bob Paddock
Sent: Tuesday, October 19, 2010 7:10 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] WWVB 60 kHz Loop Antenna Progress

On Tue, Oct 19, 2010 at 7:16 PM, Magnus Danielson
<magnus at rubidium.dyndns.org> wrote:

> But then again, avoid the issue and go for a black hole antenna amplifier.

I've been gathering information on Black Hole Antennas for a while on
my web site:


Anyone come across anything new?  Always did want to try one for 60 kHz.


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