Thanks, Tim! I'd be interested to see the pics and your results with the
new relays! I'll have a look at the Struthers-Dunn Data sheet also. Thanks
for sharing1
73,
Charlie, K4OTV
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Tim
Shoppa
Sent: Su
I agree. We really don't want the coax shield to be part of the antenna,
regardless of whether the antenna is vertical or horizontal. If the coax
shield is part of the antenna, it can seriously distort the resonance and
the driving point impedance - hence the need for some common-mode isolation.
Well, a few things to keep in mind, Mike:
.Each time an MOV breaks down, Its breakdown voltage decreases a
little, taking its break down voltage closer to the peak voltage of the line
cycles.
.Regarding ground rods - if the ground rods take ligh
got the brilliant idea to do
what I did. I feel kind of bad.
But thanks for your professional advice!
73, Mike
On Sat, Jun 27, 2015 at 1:09 PM, Charles Cu nningham
wrote:
Having spent decades of my engineering career working with electric power
distribution systems and equipment, especia
post, but no one complained since there's so much good info in it.
John is a smart fellow.
73, Mike
www.w0btu.com
On Sat, Jun 27, 2015 at 5:14 PM, Mike Waters wrote:
Hi Charlie,
On Sat, Jun 27, 2015 at 4:06 PM, Charles Cu nningham
wrote:
Well, a few things to keep in
Hi, Mike
Well, I've been licensed and a DXer since February 1957. In my opinion
remote stations and operations should NOT be acceptable for DXCC. Perhaps a
special NEW DXCC could be established for those operations Most of us over
the decades have worked diligently so improve our stations and ant
evel playing field for each category, home
> station or remote. (After all that is the crux of the issue)
>
>
> 73,
> Bob
> K6UJ
>
>
>
> > On Jul 10, 2015, at 12:54 PM, Charles Cu nningham <
> charlie-cunning...@nc.rr.com> wrote:
> >
> > Hi,
vel playing field for each category, home
> station or remote. (After all that is the crux of the issue)
>
>
> 73,
> Bob
> K6UJ
>
>
>
>> On Jul 10, 2015, at 12:54 PM, Charles Cu nningham
> wrote:
>> Hi, Mike
>>
>> Well, I've been licensed a
Hello all
It seems to me that a very fast operating preamp protection circuit could be
constructed employing a good fast saturating NPN switching transistor across
the antenna path. In receive mode the collector-base junction would have
substantial reverse bias and the transistor can be chosen fo
e Beverage switching
relays. I do that so that the signal from the Beverage is equal with the RX
signal from the inverted-L.
73, Mike
www.w0btu.com
On Sat, Aug 29, 2015 at 8:06 PM, Charles Cu nningham <
charlie-cunning...@nc.rr.com> wrote:
>
> It seems to me that a very fast ope
Well, that's certainly true, Lee. I was just wondering aloud, if the
transformers were indeed 1:1, if the point might be common-mode isolation
like we work to achieve in the transformers of our flag, pennant and KAZ
antennas - although in those cases the matching transformer also matches the
50/7
Makes sense, Lee
Charlie
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Lee K7TJR
Sent: Monday, August 31, 2015 12:44 AM
To: topband@contesting.com
Subject: Topband: KD9SV-OK1RR relays ??? (RX Front End Protector)
I believe the point of having th
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