[OKDXA] HB0
AC5UP
ac5up at windstream.net
Mon Nov 12 10:35:57 EST 2007
Kim Elmore wrote:
> Well, the K9AY loops do seem to help.
Do me a small favor... I'm considering a variant of the K9AY idea as an
all-band wire biased toward the AM broadcast band. Same concept, except
I'm thinking one loop with a spreader arm near the top to increase the
enclosed area. Visualize a 30' mast with a 10' horizontal PVC pipe
clamped about 5' from the top. Bottom end has a pair of 10' horizontal
PVC pipes on either side of the mast. Terminating resistor, ground rod
and 9:1 balun as normal. It's still a triangle, but now it's a fat
triangle. Could be better, could make no difference...
Anyway, during the mid day when there's no hint of skywave tune around
and let me know how you copy WBAP on 820 kHz and KRLD on 1080 kHz (both
Dallas). Then slide over to 1070 and listen for KFDI in Wichita, KS. I
have a hunch you'll hear a weak but usable signal from all three. For me
WBAP is a tad stronger than KRLD and I'm curious if you find the
opposite to be true since your loop is biased more toward 160 Meters
than the resonant loops I've worked with. Just for grins, see if you
have any daytime reception of KWON in Bartlesville on 1400 kHz or
(mission impossible) KMOX on 1120 in St. Louis.
At night try KDKA in Pittsburgh on 1020 kHz. That's my bellwether
station as (I think) it's the only true clear channel left in the US.
Generally comes in best an hour or so after sunset, and if you can score
KPHT on 1210 kHz (Philadelphia) you're doing extremely well. Might also
try for KSL on 1160 kHz in Salt Lake City and... If you're really
lucky... KNX in LA on 1070. SLC is tough copy for me thanks to the Tower
Of Power on 1170 and I've heard KNX only a handful of times over the years.
Used to do a fair amount of BCB DX'ing but since it all became corporate
radio the motivation isn't what it used to be.........
- TNX
Note To 'FU: -= REAL HAMS =- have no problem soldering PL-259's 'cuz
they picked up an 80 watt soldering iron at Lowe's (or a stained glass
shop) and know how to use it. Let's just say I can smoke 'em into
submission faster than some folks can Ribbit with a big iron pre-heated
for five minutes or better. The trick is to lightly tin the center
conductor and braid, solder the center pin first, let it cool, and be
sure to pull the iron as soon as the solder starts to flow into the side
holes. There's enough residual heat to finish the job and anything over
10 seconds or so with the iron on the connector body will melt the
dielectric.
The other trick is to have plenty of spare PL-259's and anything less
than textbook perfect for the connector(s) at the top of the tower gets
re-done. In other words, do your best work on the connectors that are
the most work to replace... Otherwise, you will.
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