[time-nuts] 60KHz Antenna Cont'd

[Bill Hawkins]

Perrier,

You may have missed some bits. The plans are in the archives,
or ask John, your list manager. The coax is 1/4" in diameter
but doesn't have an RG designation on the cable. I used it
indoors near a window because 60 KHz isn't greatly affected
by wooden construction.

There is no resonating capacitor. That way lies phase angle
variations with temperature. I used it with a receiver that
had a 60 KHz crystal filter, no preamp.

Tried a shielded loop in the attic (tinfoil and twisted bell wire)
to a converted BC-454(?) TRF receiver with the IF cans resonated
for 60 KHz. Was swamped by 61 KHz signal from nearby CRT monitors.

My QTH is Minneapolis, MN, not that far from Fort Collins, CO.

Bill Hawkins
 

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Perry Sandeen
Sent: Tuesday, October 19, 2010 10:44 PM
To: time-nuts-request at febo.com
Subject: [time-nuts] 60KHz Antenna Cont'd

Gents,

Wrote: < 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 results.
<snip>

Could you please elaborate on the construction details such as co-ax
used, indoors or out, and type of tuning caps used, ect?  What was the
input amp used?

I was planning on making that antenna but don't want to go to all the
effort for a bust.  My antenna would be outside and I plan on using some
RG-6.

Regards,

Perrier 




      

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