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Old June 1st 07, 01:49 PM posted to rec.radio.shortwave
Junius Junius is offline
Senior Member
 
First recorded activity by RadioBanter: Mar 2006
Posts: 111
Default External Antenna with insulated wire?

On May 26, 1:36 pm, Telamon
wrote:
In article . com,





RHF wrote:
On May 20, 7:23 pm, Telamon
wrote:
In article .com,


RedPenguin wrote:
On May 20, 7:13 pm, Telamon
wrote:
In article . com,


RedPenguin wrote:
I have a fairly large amount of insulated copper wire, that is solid.
MySonyICF-7600GR, has an externalantennajackthat is just
basically a headphonejackwith it's connector. Isn't it possibly just
to put this insulated wire on a 1/8jackand make fairly okantenna?


Yes but it needs to be a monojackwith two conductors tip and barrel.


Connect the wire to thejacktip for a single wireantenna.


I guess you can't just use any end, I used one from an old pair of
headphones that broke for the heck of it to test and it barely got
any signal in. Am I wrong about using copper wire like this?


If you want something better use two wires, one to the barrel and the
other to the tip. Stretch the wires in opposite directions and you have
a dipole. Make sure they don't short to each other inside thejack.


Can you just buy those ends anywhere? I never heard of a tip and
barrel, but I guess I can maybe find them at Radio Shack.


I have given you the wrong idea. The tip and barrel are descriptors of
the same plug. The stereo head phonejackyou used is a barrel contact,
a ring, then a tip. Examine the stereo headphonejackyou have and you
will see that there are three contacts (metal areas) separated by two
insulators. You only need two contacts, a tip and barrel. The plug you
need will be the same size but only have the two contacts missing the
small ring contact.


Theantennajackis meant to power a small externalantennathatSony
sells so you do not want to short the two contacts of thejack. Use
insulated wire.


--
Telamon
Ventura, California- Hide quoted text -


- Show quoted text -


Telamon,


FWIW - TheSonyAN-LP1 Active Shortwave LoopAntenna
requires it's own built-in {Set-of-Batteries} Battery Power to
Opperate. TheSonyICF-SW7600GR Radio simply supplies
a small 'sensing' Voltage to only "Switch" the AN-LP1
On-and-Off; and nothing more.


NOTE - This Switching {On-and-Off} Voltage from the Radio
does NOT Supply the needed Power to actually Power the
SonyAN-LP1 Active Shortwave LoopAntenna.


TheSonyICF-SW7600GR Radio has built-in 'protection'
for this small Switching Voltage : When a normal 1/8" Mono
Phone Plug is used with anAntennaWire and Ground Wire.
http://www.universal-radio.com/catal...able/0360.html


TheSonyICF-SW7600GR Radio can be run on (via) an
AC-to-DC Adapter {Wall Wart} while theSonyAN-LP1
Active Shortwave LoopAntennacan be Powered with
(via) Two (2) "AA" Batteries = 3 VDC.
http://www.universal-radio.com/catalog/sw_ant/3676.html


hope this helps - iane ~ RHF


What about this 2nd to last line in this link?
http://www.universal-radio.com/catalog/sw_ant/3676.html

"The AN-LP1 derives power from the radio when connected to models
ICF-SW1000T or ICF-SW7600G."

--
Telamon
Ventura, California- Hide quoted text -

- Show quoted text -


Shortly after I got my '7600GR, I hooked it up with the AN-LP1 antenna
to see if the '7600GR would power this antenna. It would not. When
hooked up to the '7600GR, the AN-LP1 required batteries and required
being placed in the "on" position. I'll go home this evening and test
out whether the '7600G actually can power up the AN-LP1... It would
seem rather surprising if the '7600G did, while the '7600GR did not.
Although I'd prefer that neither utilized the antenna jack for
powering an external active antenna. I just don't much care for that
arrrangement.

Junius