[Boatanchors] Question

[K0DAN]

Mike's right, i was the presence or absence of a resistor...the arc voltage 
may or may not be an issue as I previously stated.

All my comments were related to balanced line feeder...I use nominal 600 ohm 
balanced line, approx 6" spacing.

I hope my ASCII "art" comes out OK:


TO ANT <--------------o------------> TO RIG
                                       ||


TO ANT <--------------o------------> TO RIG
                                       ||




The    o    symbol are the sparkplugs
          ||


The open-wire feed goes straight to the shack, but at the exterior entry 
point you drill a block of aluminum or copper (if you can still afford 
copper!), thread the holes, and insert the sparkplugs. Also drill a hole for 
a bolt, which connects to your ground system. Mount the metal block on 
suitable wall, pole, etc. Inside the shack you can also install a heavy duty 
DPDT knife switch (one side to ground system) and/or connect the open-wire 
feed to banana plugs, so when you have the big thunderstorms, you can easily 
disconnect the equipment from the antenna network.

I wouldn't recommend trying to do this with a coax feed....you'd mess up the 
impedance of your system.

For coax, Polyphasers, Alpha Delta, or other gas-discharge surge suppressors 
are the right choice.

GL es 73

Dan
K0DAN


----- Original Message ----- 
From: <WA5CAB at cs.com>
To: <we0h at yahoo.com>; <boatanchors at mailman.qth.net>
Sent: Tuesday, August 05, 2008 12:15 AM
Subject: Re: [Boatanchors] Question


> Excellent point.  Although non-resistor Champion N-8 and N-14Y are still
> available for the 50's through 70's 4-cylinder Land Rover engines.  Lawn 
> mower
> spark plugs are also generally shorter as well.  But how do you connect 
> the coax
> center conductor to the electrode?  And without disturbing the ground
> electrode for the spark gap?
>
> In a message dated 8/4/2008 11:47:58 PM Central Daylight Time, 
> we0h at yahoo.com
> writes:
>> The mower sparkplugs are likely non-resistor plugs verses the resistor
>> plugs run in automotive motors.
>>
>> Mike
>> WE0H
>>
>>
>>
>> Gary Pewitt wrote:
>> >Dan, what's the advantage of using -lawn mower- spark plugs rather
>> >than automotive spark plugs?  I intend to do more or less what you
>> >have described for my balanced lines.   Thanks and 73  Gary  N9ZSV
>> _______________________________________________
>
> Robert & Susan Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
> _______________________________________________
>