"John N9JG" wrote in message
...
I wonder where that figure of "20db" comes from? Did you just pull it out
of the aether?


Wonder no more. It comes from an article on vertical antenna ground
enhancement off the DX Engineering website. Here is the link oh ye of little
faith...

1.
http://www.dxengineering.com/techarticles.asp?ID={A46FA56A-2E82-4AF9-9427-6592FC5CFCB7}

--

Charlie
Deep South 2 Meter SSB Net
www.deepsouthnet.net






"Charlie" wrote in message
...
I agree with spamtank about adding ground radials. My 5BTV has 72 ground
radials and it really does perform well. Pics of the installation here.

1. http://www.ad5th.com/5-BTV.html

Ground return currents are the "other half" of any vertical antenna.
Grab an extra 20db by adding lots of them. Mine total around 1300 ft or
wire.

Evidently that direct link won't work...Let's try this one

1. http://www.dxengineering.com/TechInfo.asp

This is the DX Engineering Tech Info page. N ear the bottom of the list is
the article titled "20db for $48.60"

--

Charlie
Deep South 2 Meter SSB Net
www.deepsouthnet.net





"Charlie" wrote in message
...
"John N9JG" wrote in message
...
I wonder where that figure of "20db" comes from? Did you just pull it out
of the aether?


Wonder no more. It comes from an article on vertical antenna ground
enhancement off the DX Engineering website. Here is the link oh ye of
little faith...

1.
http://www.dxengineering.com/techarticles.asp?ID={A46FA56A-2E82-4AF9-9427-6592FC5CFCB7}

--

Charlie
Deep South 2 Meter SSB Net
www.deepsouthnet.net






"Charlie" wrote in message
...
I agree with spamtank about adding ground radials. My 5BTV has 72 ground
radials and it really does perform well. Pics of the installation here.

1. http://www.ad5th.com/5-BTV.html

Ground return currents are the "other half" of any vertical antenna.
Grab an extra 20db by adding lots of them. Mine total around 1300 ft or
wire.

Your link does point to a page that contains an entry with the more
reasonable value of 3-6 db. Isaiah 36:12, in the KJV, also seems to agree
with the smaller value.

"Charlie" wrote in message
...

Wonder no more. It comes from an article on vertical antenna ground
enhancement off the DX Engineering website. Here is the link oh ye of
little faith...

Huh? Proselytize yourself..you need it pal....
--

Charlie
Deep South 2 Meter SSB Net
www.deepsouthnet.net





"John N9JG" wrote in message
...
Your link does point to a page that contains an entry with the more
reasonable value of 3-6 db. Isaiah 36:12, in the KJV, also seems to agree
with the smaller value.

"Charlie" wrote in message
...

Wonder no more. It comes from an article on vertical antenna ground
enhancement off the DX Engineering website. Here is the link oh ye of
little faith...

One word of caution. After using it for months my child bride found the
impedence of her Butternut had changed after a hard rain and readjusted her
tuner to compensate. A tad later she found a weak station she wanted to
contact and turned on her amplifier. A few moments into the QSO the SWR went
nuts and she fried a final. Dropping power she found that the tuner settings
were again back to normal. We continued to use the 'nut for several weeks
then sold it without the problem reoccuring.

I can only guess that the capacitors on the 'nut had filled with rain,
changing the antenna impedence, then dried out when a KW was applied. YMMV

What part was destroyed in the final? Did the tank coil melt?

"Vito" wrote in message
...
One word of caution. After using it for months my child bride found the
impedence of her Butternut had changed after a hard rain and readjusted
her
tuner to compensate. A tad later she found a weak station she wanted to
contact and turned on her amplifier. A few moments into the QSO the SWR
went
nuts and she fried a final. Dropping power she found that the tuner
settings
were again back to normal. We continued to use the 'nut for several weeks
then sold it without the problem reoccuring.

I can only guess that the capacitors on the 'nut had filled with rain,
changing the antenna impedence, then dried out when a KW was applied.
YMMV

No, just the tube. Neat little hole in the glass. Sorry for the
misunderstanding - to us old vacuum-state dudes the tube is the "final".

"John N9JG" wrote in message
...
What part was destroyed in the final? Did the tank coil melt?

"Vito" wrote in message
...
One word of caution. After using it for months my child bride found the
impedence of her Butternut had changed after a hard rain and readjusted
her
tuner to compensate. A tad later she found a weak station she wanted to
contact and turned on her amplifier. A few moments into the QSO the SWR
went
nuts and she fried a final. Dropping power she found that the tuner
settings
were again back to normal. We continued to use the 'nut for several
weeks
then sold it without the problem reoccuring.

I can only guess that the capacitors on the 'nut had filled with rain,
changing the antenna impedence, then dried out when a KW was applied.
YMMV