Good point. I have a permanently connected 20K 10W wire wound resistor on my
inverted-L feedpoint.
Wes N7WS
On 11/12/2022 5:21 PM, Lee STRAHAN wrote:
And don't forget to discharge the element to ground before connecting to your
measuring device. Static is NOT your friend in this case.
Lee
, whatever goes to ground.
Robin
WA6CDR
VP6DX, etc
- Original Message -
From: "Jim Brown"
To:
Sent: Saturday, November 12, 2022 10:13
Subject: Re: Topband: How good is good enough
On 11/12/2022 10:02 AM, CUTTER DAVID via Topband wrote:
I'd be interested to know h
t: Re: Topband: How good is good enough
>Just cut 20 more 70' radials. Time to go play in the yard.
If that were all I could add, I'd switch them to 40 35' radials.
The R component of my inverted L on around 1840 is 11 ohms. X is around 20.
That's with 101 radials. I
>Just cut 20 more 70' radials. Time to go play in the yard.
If that were all I could add, I'd switch them to 40 35' radials.
The R component of my inverted L on around 1840 is 11 ohms. X is
around 20. That's with 101 radials. I look for a R of at least 15
ohms where X is minimal on an analyze
On 11/7/2022 1:27 PM, Pete Smith N4ZR wrote:
Is it worth laying down more radials, or am I approaching diminishing
returns?
It depends a lot on the nature of your soil, and how much a dB or two is
worth to you. These slides for a talk I've done at Pacificon, Visalia,
and for several ham clubs
On 11/12/2022 10:02 AM, CUTTER DAVID via Topband wrote:
I'd be interested to know how you make the joints, then add joints to joints,
then...doesn't it get a bit lumpy? Do you solder or crimp or nuts and bolts,
joints in three at a time...?
I've done it two ways. There's a DX Eng radial plat
-
> > From: Topband On Behalf
> > Of Pete Smith N4ZR
> > Sent: Monday, November 7, 2022 4:27 PM
> > To: topband reflector
> > Subject: Topband: How good is good enough
> >
> > Now that the lawn mowing is done for the season, I resuscitated my 160M
> >
dials of varying
lengths (Most were either 50 or 100' long.). Much would depend on
length, configuration, terrain and ground conductivity.
Jim - WS6X
-Original Message-
From: Topband On
Behalf Of Pete Smith N4ZR
Sent: Monday, November 7, 2022 4:27 PM
To: topband reflector
Subject: T
or
Subject: Topband: How good is good enough
Now that the lawn mowing is done for the season, I resuscitated my 160M
inverted L. With 13 on the ground radials, each roughly 70 feet long, measured
R of 34 ohms seems OK to me. Is it worth laying down more radials, or am I
approaching dimini
Hi Pete,
Buy all means install more radials.
At 70 foot radial length diminishing returns is at about 30 radials
73
Frank
W3LPL
- Original Message -
From: "Pete N4ZR N4ZR"
To: "topband"
Sent: Monday, November 7, 2022 9:27:09 PM
Subject: Topband: How good is good
Original Message-
From: Topband On Behalf Of
Pete Smith N4ZR
Sent: Monday, November 7, 2022 4:27 PM
To: topband reflector
Subject: Topband: How good is good enough
Now that the lawn mowing is done for the season, I resuscitated my 160M
inverted L. With 13 on the ground radials, each roughly 70
Now that the lawn mowing is done for the season, I resuscitated my 160M
inverted L. With 13 on the ground radials, each roughly 70 feet long,
measured R of 34 ohms seems OK to me. Is it worth laying down more
radials, or am I approaching diminishing returns?
--
73, Pete N4ZR
Check out the ne
that part isnt
critical yet and simply move it as needed.
Carl
KM1H
- Original Message -
From: Guy Olinger K2AV
To: ZR
Cc: Pete Smith N4ZR ; topband@contesting.com
Sent: Monday, March 12, 2012 1:02 PM
Subject: Re: Topband: How Good is Good Enough?
I dont know if Id trust trying to us
you have to use the correct
impedance value for the CT transformers.
Carl
KM1H
- Original Message -
From: "Andrey Fedorishchev"
To: "ZR"
Cc: "Topband" ; "N1BUG"
Sent: Monday, March 12, 2012 12:55 PM
Subject: Re: Topband: How Good is Good Enough?
My experience with canid (coyote and wolf) urines suggests that if
canids are not the local predator of interest--coyotes in England?--it
may not work.
Garry, NI6T
On 3/12/2012 6:15 AM, Pete Smith N4ZR wrote:
> Two words - coyote urine. Seriously the local Southern States
> sells a critte
>
> I dont know if Id trust trying to use a resonant dipole on the ground to
> determine the VF of a non resonant wire. In any case keep the VF at about
> .6
> or higher when determining the maximum length of the BOG, Slinky, or any
> other Beverge form.
>
> Carl
> KM1H
>
It was clear there was a
ends. Thats what is used here for the 5 reversibles and a reversible
> BOG will be tried soon.
>
> Carl
> KM1H
>
>
> - Original Message -
> From: "N1BUG"
> To: "Topband"
> Sent: Monday, March 12, 2012 11:22 AM
> Subject: Re: Topband: H
11:22 AM
Subject: Re: Topband: How Good is Good Enough?
>> If you need a preamp on any Beverage you have a problem IMO. Its too
>> long,
>> poorly terminated or there is a lot of feedline loss.
>
> Or you've been forced into some other bad situation.
>
>
> If you need a preamp on any Beverage you have a problem IMO. Its too long,
> poorly terminated or there is a lot of feedline loss.
Or you've been forced into some other bad situation.
I have a local noise problem that is beyond my control.
Unfortunately I can't afford the DXE noise canceller s
scrap #10 to 16 insulated and lays on the
typical woodland ground cover, pine needles and leaves. I shake it free
every season so it doesnt wind up getting buried.
Carl
KM1H
- Original Message -
From: "Tracey Gardner"
To:
Sent: Monday, March 12, 2012 9:11 AM
Subject: Re: To
.6
or higher when determining the maximum length of the BOG, Slinky, or any
other Beverge form.
Carl
KM1H
- Original Message -
From: "Pete Smith N4ZR"
To:
Sent: Monday, March 12, 2012 7:29 AM
Subject: Re: Topband: How Good is Good Enough?
> This is exactly why
Two words - coyote urine. Seriously the local Southern States
sells a critter repellent based on dried coyote urine.
In our case, the biggest critter problem with my BOG so far has been
deer - tangle-footed beasts!
73, Pete N4ZR
The World Contest Station Database, updated daily at www.con
I'd be interested to know what "critter/rodent" damage these BOGs get?
My experience, in the UK, of leaving the last 60m of my Beverage lying on
the ground for a few days, is that the insulation got chewed through in
seven places.
I would be interested in trying a BOG but I have a feeling that
ccordingly. I used 250 Ohms for the ground.
>
> Carl
> KM1H
>
>
> ----- Original Message -
> From: "Mike Waters"
> To: "topband"
> Sent: Sunday, March 11, 2012 6:12 PM
> Subject: Re: Topband: How Good is Good Enough?
>
>
> > How doe
just pop out of the noise
floor.
Dan W8CAR
-Original Message-
From: ZR
Sent: Sunday, March 11, 2012 8:58 PM
To: Mike Waters ; topband
Subject: Re: Topband: How Good is Good Enough?
Ive said several times that my 500' BOG's dont need a preamp. The signal
level may be 5-6dB lower
arcluster.reversebeacon.net, port 7000
On 3/11/2012 9:52 PM, ZR wrote:
> Very possible on your farm Mike, time to experiment I'd say.
>
> Carl
> KM1H
>
>
> - Original Message -
> From: "Mike Waters"
> To: "topband"
> Sent: Sunday, March 11, 2012
Very possible on your farm Mike, time to experiment I'd say.
Carl
KM1H
- Original Message -
From: "Mike Waters"
To: "topband"
Sent: Sunday, March 11, 2012 9:19 PM
Subject: Re: Topband: How Good is Good Enough?
> Thanks, Carl!
>
> Seems to me that
Thanks, Carl!
Seems to me that laying on the ground, the VF would be considerably lower,
and so we could shorten them.
73, Mike
www.w0btu.com
On Sun, Mar 11, 2012 at 7:58 PM, ZR wrote:
> Ive said several times that my 500' BOG's dont need a preamp. The signal
> level may be 5-6dB lower
>
_
2 6:12 PM
Subject: Re: Topband: How Good is Good Enough?
> How does the signal level from a BOG compare to the signal level from an
> elevated Beverage? I'm sure the output from a BOG is less. But how much
> less? Enough to require a remote preamp? I've always wondered.
>
Mike:
I had 2 element BOGS and a LOG Loop at my former QTH - Yes the signal level
is less than a standard elevated beverage. I had excellent results using a
preamp in the shack. I didn't have Beverages to compare signal levels with
but I know from using Beverages at two contest stations where I
How does the signal level from a BOG compare to the signal level from an
elevated Beverage? I'm sure the output from a BOG is less. But how much
less? Enough to require a remote preamp? I've always wondered.
I --and many others-- have found a remote preamp on an *elevated* Beverage
to be totally u
I have about 350 feet of quad-shield RG-6 going out to a receiving
antenna hub which has a 20-db ARR preamp on the end of the line,
followed by an 8-way relay switch. The feedline is lying on the ground,
or more correctly on the stubble of a mowed hayfield. At the moment, it
has only one BOG
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