dxAce wrote:

John Doe wrote:

Why is the Eavesdropper minus the static arrestor?

Because I'm keeping it?


If that's the Zap Trapper that came with the antenna, be advised it
has a finite halflife. It loses effectiveness over time.




"dxAce" wrote in message
...

Brian Hill wrote:

"dxAce" wrote in message
...
Looks as though Universal is offering up a new Hy-Power AB-SWL-SL
shortwave
sloper antenna:

http://www.universal-radio.com/catalog/sw_ant/5062.html

dxAce
Michigan
USA

Are you going to try it Steve? Looks like it might be allright?
I rather doubt I'll be trying it, Brian. Tentative plans here are to try
and put
up an inverted vee this coming summer for 60 meters, and then use that for
other
bands as well with an antenna tuner. Not even sure anymore if it would
even be
worthwhile to try it, but I might have a go with it.

I do have a used Eavesdropper C for sale, minus the static arrestor, for
$25.00
+ shipping, in case anyone might be interested.

dxAce
Michigan
USA

D Peter Maus wrote:

dxAce wrote:

John Doe wrote:

Why is the Eavesdropper minus the static arrestor?

Because I'm keeping it?


If that's the Zap Trapper that came with the antenna, be advised it
has a finite halflife. It loses effectiveness over time.

Could be, but it's never been used. It's currently a $24 item at Universal.




"dxAce" wrote in message
...

Brian Hill wrote:

"dxAce" wrote in message
...
Looks as though Universal is offering up a new Hy-Power AB-SWL-SL
shortwave
sloper antenna:

http://www.universal-radio.com/catalog/sw_ant/5062.html

dxAce
Michigan
USA

Are you going to try it Steve? Looks like it might be allright?
I rather doubt I'll be trying it, Brian. Tentative plans here are to try
and put
up an inverted vee this coming summer for 60 meters, and then use that for
other
bands as well with an antenna tuner. Not even sure anymore if it would
even be
worthwhile to try it, but I might have a go with it.

I do have a used Eavesdropper C for sale, minus the static arrestor, for
$25.00
+ shipping, in case anyone might be interested.

dxAce
Michigan
USA

I done told y'all www.yall.com before, years ago, the best Antenna
is, stick a wire on a purty girl's arse.
cuhulin

Give me BBC America's Top Gear email addy.Stop what you are doing and be
fast about it too.

www.devilfinder.com David's Southern Gospel Midi Tracks

(Rank Strangers)
cuhulin

On Feb 2, 11:27*am, wrote:
On Sat, 2 Feb 2008 13:10:20 -0600, "Brian Hill" wrote:

"dxAce" wrote in message
...
Looks as though Universal is offering up a new Hy-Power AB-SWL-SL
shortwave
sloper antenna:

http://www.universal-radio.com/catalog/sw_ant/5062.html

dxAce
Michigan
USA

Are you going to try it Steve? Looks like it might be allright?

BH

I'm not Steve but will offer my comment anyway. *It looks very much
like the Alpha-Delta sloper in length and with the inductive coils.
The prime difference seems to be that it accepts coax or ladder line.- Hide quoted text -

- Show quoted text -

GH,

That was my take on the Diagram of the new "Hy-Power"
AB-SWL-SL Shortwave Sloper Antenna
http://www.universal-radio.com/catal...nt/5062dia.jpg
http://www.universal-radio.com/catalog/sw_ant/5062.html

It sure do look like the Alpha Delta DX-SWL Sloper Antenna.
http://www.universal-radio.com/catal...nt/pg29d1a.gif
http://www.alphadeltacom.com/dxswl_ii.htm
http://www.universal-radio.com/catalog/sw_ant/0799.html

"Close Enough" to be a 'clone' -BUT- the Dual Connections for
with SO-239 for Coax Cable or Two Terminals for Twin-Lead or
Ladder-Line.

~ RHF

- -
- - They are a sealed gas tube. However, impurities, leakage...
- - that sort of thing, compromise effectiveness over time.
- - And even a few static strikes will produce some electrolytic
- - action between the electrodes and the gas introducing further
- - impurities. I read an article a some years ago, either on the
- - Universal or the Grove websites, recommending replacement
- - of the gas cartridge every few years as a matter of course.
- -
- - The Transitrap has a replaceable cartridge, in part, for this
reason.
-
- Now you did it! You made me go dig out the paperwork!
-
- From the Alpha Delta data sheet: ...
- Arc-Plug Cartridge replacement is indicated by an increase
- in VSWR during transmitter tune-up, or by a "dead" receiver
- caused by the Arc-Plug Cartridge being shorted due to an
- extremely strong near-miss lightning dischharge.


For the Newbies : Lightning EMF Protection using an
In-Line Gas Discharge Tube (GDT) {Arc-Plug} Device.

Arc-Plug Cartridge Cartridge Replacement Page 2
http://polysat.calpoly.edu/earthstation/documents/delta-4.pdf

ARC-PLUG (tm) Gas Tube Module
http://www.alphadeltacom.com/tt3g50.html

Gas Surge Arrestor using an "Arc-Plug Cartridge" consist of
http://www.primecellular.com/859902-..._p_51-307.html
two Metal Electrodes that are Hermetically Sealed in a rugged
Gas Filled, Ceramic Cylinder. -more details to read-
http://www.alternativewireless.com/c...Protector.html

Electric Arc Discharge Tube Containing a Gas
or a Vapor US Patent held by "GE" -circa- 1935
http://www.freepatentsonline.com/2020715.html

Deuterium Gas Discharge Tube (GDT) -circa- 1994
http://www.patentstorm.us/patents/5552669.html

ABOUT - Gas Filled Tube
http://en.wikipedia.org/wiki/Gas_filled_tube
Gas-Filled Tubes operate by Ionizing the Gas with
applied Voltage to start Electrical Conduction.
* Features of a Micro-Gap Gas Filled Tube
http://www.mmea.com/surge_ab/surge08/micro.htm
http://www.allaboutcircuits.com/vol_3/chpt_7/2.html
http://www.sankosha-usa.com/
http://scifun.chem.wisc.edu/chemweek...t/gasemit.html

CAUTION - Arc-Plug(R) Cartridge Pill Will Not Operate
without a good Ground.
http://www.eham.net/reviews/detail/2791

REMEMBER - Good Earthen Ground/Grounding is the
Foundation of All Lightning EMF Protection [.]

Oops - Do not cornfuza dees Arc-Plug(R) Cartridge
wit E-A-R(R) Arc Plug(tm) Dual-End Earplugs. :o))
http://www.labsafety.com/search/AOSa...sredirect=true

YouTube does "Homemade Gas-Discharge Tube"
http://www.youtube.com/watch?v=KV08O-dM9Jg
http://www.physics.lsa.umich.edu/dem...cs/7b10_10.jpg

"How NOT to Have a QSO with the Clouds"
http://www.iceradioproducts.com/thorshammer.htm
Dodging Thor's Hammer -by- Tom Cox [KT9OM]

Ready-Made In-Line Gas Discharge Tube (GDT) {Arc-Plug} Devices :

Antenna Super Market "Zap Trapper" Coaxial
http://www.universal-radio.com/catal...tect/2993.html
The life of the "Zap Trapper" is dependent on the surge current
magnitude and durations. The Gas Discharge Tube (GDT) can last for
thousands of cycles and will typically last for many years.

Alpha Delta "Transi-Trap" LT utilizes a hermetically sealed
http://www.universal-radio.com/catalog/protect.html
gas filled cylinder GDT which has very reliable and predictable
switching characteristics. -read more-

Alpha Delta ATT3G50 "Arc Cartridge" Coax Surge Protectors
http://www.universal-radio.com/catal...tect/4003.html
After hundreds of protective firings of the Arc Cartridge (GDT)
or after a catastrophic surge, the Arc Cartridge may fail and
require replacement.

PolyPhaser Impulse Suppressor
http://www.universal-radio.com/catal...tect/4640.html

I.C.E. (ICE) Coaxial Impulse Suppressor / Arrestor
http://www.iceradioproducts.com/3.html
http://www.iceradioproducts.com/impulse1.html#1

dxAce wrote:

D Peter Maus wrote:

dxAce wrote:
D Peter Maus wrote:

dxAce wrote:
John Doe wrote:

Why is the Eavesdropper minus the static arrestor?
Because I'm keeping it?

If that's the Zap Trapper that came with the antenna, be advised it
has a finite halflife. It loses effectiveness over time.
If I understand correctly, these use a gas filled tube, and remain effective until
they directly short to ground, much the same as the Alpha Delta Transitrap.

I've had the Alpha Delta versions in line here for many years and they've not yet
failed.

They are a sealed gas tube. However, impurities, leakage...that sort
of thing, compromise effectiveness over time. And even a few static
strikes will produce some electrolytic action between the electrodes and
the gas introducing further impurities. I read an article a some years
ago, either on the Universal or the Grove websites, recommending
replacement of the gas cartridge every few years as a matter of course.

The Transitrap has a replaceable cartridge, in part, for this reason.

Now you did it! You made me go dig out the paperwork!

From the Alpha Delta data sheet: ...Arc-Plug Cartridge replacement is indicated by an
increase in VSWR during transmitter tune-up, or by a "dead" receiver caused by the
Arc-Plug Cartridge being shorted due to an extremely strong near-miss lightning
dischharge.



Then that settles that. Thanks.



"dxAce" wrote in message
...
Brian Hill wrote:

"dxAce" wrote in message
...
Looks as though Universal is offering up a new Hy-Power AB-SWL-SL
shortwave
sloper antenna:

http://www.universal-radio.com/catalog/sw_ant/5062.html

dxAce
Michigan
USA

Are you going to try it Steve? Looks like it might be allright?
I rather doubt I'll be trying it, Brian. Tentative plans here are to try
and put
up an inverted vee this coming summer for 60 meters, and then use that for
other
bands as well with an antenna tuner. Not even sure anymore if it would
even be
worthwhile to try it, but I might have a go with it.

I do have a used Eavesdropper C for sale, minus the static arrestor, for
$25.00
+ shipping, in case anyone might be interested.

dxAce
Michigan
USA

Those ******* tv channels SUCK!!!! I clicked on DIY, Amy Mattthews,
bathroom renovations.
cuhulin

Telamon,

This Message and Thread Needed both
Your Vast Knowledge and Great Expertise.

but alas you were once again 'mia' ~ RHF

-ps- that's 20 for me and 0 for you