For sure.mine are stapled to the groundon top!!
73
David Harmon
K6XYZ
Sperry, OK
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Donald
Chester
Sent: Friday, October 12, 2018 10:35 PM
To: topband@contesting.com
Subject: Topband: Historical n
I was looking through my old ARRL Antenna Books. The text in the "Antennas for
160m" chapter in the 1939, 1944 and 1949 issues in my collection state: "The
ideal form of ground is a series of conductors buried A FOOT OR TWO beneath the
surface, radiating like the spokes of a wheel from under t
FYI concerning my 80 meter 4-Square using sloping dipoles
I have now disconnected all four 75 ohm links from the Comtek box. The 75 ohm
stubs are just left hanging, not shorted or anything. Comtek box out of play
right now. Three of the dipole are laying on the ground with shorts across
the
Joe is correct.
On 10/12/2018 5:45 PM, Joe Subich, W4TV wrote:
On 2018-10-12 7:10 PM, MrToby wrote:
You dont have to lower them but you need to short them to ground to
make them electrically invisible
No, with 1/4 wave elements you must *open* the feed point - disconnect
any feedlines and remo
On 2018-10-12 7:10 PM, MrToby wrote:
You dont have to lower them but you need to short them to ground to
make them electrically invisible
No, with 1/4 wave elements you must *open* the feed point - disconnect
any feedlines and remove any components across the feedpoint - to make
them invisible.
I might have done that. It was 20 years ago… :)
From: MrToby
Sent: Friday, October 12, 2018 7:11 PM
To: Dick Green WC1M
Cc: Guy Olinger K2AV ; David Raymond
; w...@hotmail.com; TopBand List
; terry burge
Subject: Re: Topband: trying to tune up 80 meter 4-Square
You dont have to lower
At this location, the VNWA is a bit squirly near the BC band but with a
single L/C notch added at the device input (within the cal plane), it
works fine.
The AA-55 Zoom I have is immune and is the my go-to instrument for field
work. Recommended.
MFJ-259 is too easily disturbed and is not re
You dont have to lower them but you need to short them to ground to make
them electrically invisible
On Fri, Oct 12, 2018, 6:07 PM Dick Green WC1M wrote:
> Interesting. This is not how I tuned my 40m 4-square, albeit with tubular
> elements not slopers.
>
> Anyway, my understanding is that you d
Interesting. This is not how I tuned my 40m 4-square, albeit with tubular
elements not slopers.
Anyway, my understanding is that you disconnect all four elements from the
control box and measure at the feedpoint, not through the phasing lines. I did
it that way and had no trouble tuning the ele
I can vouch for the AA-55 Zoom, although it is not without flaws. I live 5.9
miles from a 50KW BC station on 1550 kHz. On my 160-meter inverted-L they are
70 dB over S9 on a calibrated K3, that's 70 dB above -73 dBm or -3dBm. As long
as I don't sweep through that frequency, the analyzer is unfa
On 10/12/2018 12:02 PM, AC0RL via Topband wrote:
I have found that antenna analyzers can get screwed up on long antennas if
there are nearby transmitters; AM stations or any other transmitter that can
swamp out the input to the analyzer. I live 1/4 mile from a 1kw am station
and I cannot use
In response to:
Recently Tree did some work for me and one of the things was to put
up the Comtek 80 meter 4-Square switching unit and a couple of pulley setups
for my raising of the 80meter slopers. Lately I've been chasing my
tail around to get them dipped in around 3700-3750 Khz.
Not wishing to sound callus since I just read about the ham who lost his life
on a tower collapse.But does anyone have a copy of the story of the guy who
writes to his insurance company explaining how he got injured. I imagine it
was from many years back in one of the radio magazines. As I
13 matches
Mail list logo
