Re: J6/N7QT
I worked him around 02z on the 10th on 80 CW and asked about 160 and
he said 'probably tomorrow' but I never heard him that night and I
stayed home from an event my wife wanted to go to as well to look
for him ... ouch He was on 30 m though.
I heard somewhere that they had to share
Sounds like really effective approaches! I expect that the narrowing of the
BW as you added radials was because the additional radials were reducing the
losses of the system and therefore raising the Q. Your 130 ft radials were
fairly close to 1/4 wave resonance on 160, I would think. I agree
Rick,
You will never find out which way is the cheapest.
Put down all the radials you can manage, the longer - the better.
Do not care about a few USD up/dwn.
The more, the better!
73
CU on 160
SM7BIC
-Ursprungligt meddelande-
Från: Topband [mailto:topband-boun...@contesting.com] För
No problem at all here, using two or three types of compression F
connectors. PE jacket flooded direct burial RG6 type cable, one foil
and braid, NOT quad shield. They have been in service now for 4
years with no issues. Best part is my local squirrels don't seem to
like the taste of
On 12/13/2012 3:14 PM, Tom W8JI wrote:
Somehow they thought moving the feedpoint eliminated the need for
radials with an electrically short antenna, when the real mechanism
was a 1/2 wave vertical was converted to a 1/4 wave groundplane 1/4
wave above ground and it only got a tiny bit
Joe Subich, W4TV wrote:
Is there any theory to the 25% rule?
The 25% rule says the ends of the top hat wires should not extend
more than 25% down the vertical. The thought is that the wires
shield the main vertical ... that the currents on the top hat
wires cause cancellation. Once the
Craig Clark wrote:
Anyone have any success installing compression F connectors on
polyethylene
coated RG6?
I am having no luck with either double or quad shield compression or older
crimp F connectors.
Craig Clark K1QX
An old trick that works with hoses on barb connectors is to
heat up
Hi Carl,
I was in e-mail contact with N7QT during his J6 operation, which
finished a couple of days ago.
You are right, the antenna had to be shared with 160m and 80m, and for
some reason could not be switched during the night. Hence, they had to
commit to one band or the other before
the more i read, it seems raised radials are a fairly easy way to raise
the effeciancy of a short vertical.
i have a hy-gain 18ht with base loading. can i use these raised radials
with this antenna, and if so how to do it. it is impossible to raise
the whole antenna to get the base off the
the more i read, it seems raised radials are a fairly easy way to raise
the effeciancy of a short vertical.
Only if the original ground system is a meager system with significant loss.
At my QTH on 40 meters, 4 elevated radials at 6 feet above ground were about
equal to 12-15 radials in the
The beverage notes web page may be of some help.
www.qsl.net/k1fz/beveragenotes.html
I like 600 ohms . Losses go up faster when vegetation comes in contact with
wires if the impedance goes much higher. I try to keep the wires clear even
at 600 ohms.
73
Bruce-K1FZ
On Thu, Dec 13, 2012 at
Just completed cables for an active receive 4 square with Commscope PE jacketed
flooded RG6 (660-BEF), 1000' on ebay for $35. I used the weathertight
compression fittings and a Radio Shack stepped prep cutter. RS has the tools
cheap. Extra care is needed to remove the braid shards since
Hi Craig,
I bought a new roll of flooded quad shield RG-6 and packages of connectors from
5 sources because they are cheap until I found a package that worked.
Here is the one that worked great. Note: this is for Quad Shield
and Flooded (with Poly.). If you have Double shield it may not
Forgot to say these were purch. on eBay and the same company
sells Dual Shield Connectors:
RG6 Quad Shield Compression
F-Type Connectors
DESCRIPTION
Quantity: 10
For use with RG6 Quad Shield Cable (Not suitable for dual shield cable, look in
our store for RG6 dual shield connectors)
Hi, Rick
Well, 14 ga stranded wire should be fine for radials - although you might
want to pre-stretch it.
I have occasionally used smaller gauge wire - 16 gauge or even 18 gauge
stranded with black PVC insulation for lower visibility.
Regards,
Charlie, K4OTV
-Original Message-
From:
I use whatever I can find at the lowest cost which has been mostly #16 and
18 stranded and insulated in 500-1000' reels at a local surplus shop. Ive
even used #22 when the other wasnt on hand and it was a weekend. With the
current split thru a sufficient number of wires there shouldnt be any
A ground screen mesh extending out at least 25' from the base would reduces
losses considerably since just 10-20 radials has little effect.
At a prior QTH, going from 100 radials of 60-130' to spokes of 4' x 50'
rabbit wire mesh on top of them made the difference between also ran and
pileup
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