View Single Post
  #49   Report Post  
Old October 15th 07, 09:02 PM posted to rec.radio.amateur.antenna
Tim Shoppa Tim Shoppa is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 263
Default Antenna for receiving WWV/10MHz: am I asking too much?

On Oct 14, 12:34 pm, Frnak McKenney
wrote:
Tim,

Thanks for joining in.







On Sat, 13 Oct 2007 17:27:01 -0700, Tim Shoppa wrote:
Frnak McKenney wrote:
I'm in Richmond, Virginia and I'm trying to noticeably improve my
reception of WWV's 10MHz signal from Fort Collins, Colorado. It all
seemed so simple, two weeks ago: wind some wire, solder a
connector, and Hey...presto! a clean WWV signal. grin!

--snip--

Frank -
I am up in Maryland, not too far from you.


WWV on 10MHz is only usable for about a third or less of the day for
locking an electronic clock. Generally the late afternoons and
evenings are great, early afternoons and mornings are a little more
variable.


Overnight 5MHz works best. During the mid-day 15MHz or when
propogation permits 20MHz rules for WWV. I don't think your Heath has
any frequency diversity capability, right? Well, 10MHz is a pretty
good choice if you only have a choice of one, it is usually coming in
strong in the evenings there. Over wintertime 5MHz gets pretty good at
night.


My current box, the MAC-II, only monitors 10MHz; its predecessor,
the GC-1000 MAC, monitored (IIRC) 5/10/15MHz and chose the
strongest.

You will, especially in the early morning, occasionally hear WWVH on
10MHz or 5MHz or 15MHz. Sometimes I hear both WWV and WWVH at the same
time. You can recognize WWVH by the woman's voice reading the time.


My best antenna for 10MHz WWV is my 40-meter dipole strung between
two trees. Mine mostly points broadside to the NE/SW but if you could
arrange it, it would be slightly preferable to have it broadside to be
sensitive to the W.


A dipole optimized for 10MHz would be even shorter - the formulas
put a half wave dipole at 47 feet long.


Thanks for your signal report and the antenna suggestion. I'll keep
it in mind.

On the other hand, my tuned (and currently horizontal) loop is
suddenly picking up WWV/10MHz remarkably reliably, and I didn't even
have to "sacrifice a goat at midnight"! grin

Has your reception improved lately as well (last few days)?


Don't know about WWV in particular, but this past weekend on the ham
bands there was an obvious uptick in propogation conditions. The MUF
was up enough that I heard several pileups on 15 meters and 40 and 30
Meters were more hopping than usual in mid-day/early evening.

Tim.