102 lines
3.9 KiB
Plaintext
102 lines
3.9 KiB
Plaintext
|
|
|||
|
|
|
|||
|
|
***********************************************************************
|
|||
|
|
* Cordless Telephone Antenna -A.G.TENNA- August 3, 1989 *
|
|||
|
|
* Designed by: Adam Gott (On GENIE: A.GOTT) *
|
|||
|
|
*---------------------------------------------------------------------*
|
|||
|
|
* For latest UPDATE, call: The Hole in the Wall BBS *
|
|||
|
|
* (415)/524-1329 *
|
|||
|
|
***********************************************************************
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
Introduction:
|
|||
|
|
-------------
|
|||
|
|
|
|||
|
|
Below is what I have been using for quite a long time now
|
|||
|
|
to stretch the reception range of my scanners on the
|
|||
|
|
cordless phone/baby monitor frequency ranges. Using this
|
|||
|
|
antenna, I have been able to receive about 10-15 more
|
|||
|
|
cordless phones than with my discone or telescoping
|
|||
|
|
antenna. I hope you will find this useful! Remember,
|
|||
|
|
that stupid E.C.P.A. does not apply for these devices!
|
|||
|
|
|
|||
|
|
|
|||
|
|
Required Materials:
|
|||
|
|
-------------------
|
|||
|
|
|
|||
|
|
Coaxial cable - 50 Ohms - length variable depending on usage
|
|||
|
|
Connector (to match your scanner)
|
|||
|
|
Wire - Any kind, 30 feet or so
|
|||
|
|
|
|||
|
|
|
|||
|
|
Instructions:
|
|||
|
|
-------------
|
|||
|
|
|
|||
|
|
1. Attach connector to one end of the cable.
|
|||
|
|
2. On the other end, strip off outside covering (about 1.5
|
|||
|
|
inches). Twist braiding together.
|
|||
|
|
3. Strip about .5 inches from center conductor.
|
|||
|
|
4. Connect 10 feet of wire to the center conductor. Soldering
|
|||
|
|
is the most preferred way to go here! If not, then tape
|
|||
|
|
it up with electrical tape.
|
|||
|
|
5. Connect 15-30 feet of wire to the braid. Solder this also.
|
|||
|
|
6. Tape (or use some type of sealant) on the connection area
|
|||
|
|
at the tip of the cable.
|
|||
|
|
7. Finished, now hang it somewhere. Best results are obtained
|
|||
|
|
by stretching it end to end as high as possible, but
|
|||
|
|
in front of a window produces good results. Draping it
|
|||
|
|
out the window is even better. Just try to keep the two
|
|||
|
|
wires from running next to each other, this degrades
|
|||
|
|
A.G.TENNA performance slightly.
|
|||
|
|
8. Refer to below 'illustration' if you have any questions
|
|||
|
|
or I can be reached on GEnie or The Hole in the Wall.
|
|||
|
|
|
|||
|
|
Illustration:
|
|||
|
|
-------------
|
|||
|
|
|
|||
|
|
'A'
|
|||
|
|
<--------10 Feet------------->
|
|||
|
|
------------------------------c 'B'
|
|||
|
|
c <-----------15-30 Feet------------->
|
|||
|
|
bcbbb------------------------------------
|
|||
|
|
bcb
|
|||
|
|
bcb
|
|||
|
|
XXX KEY: XXX = coaxial cable
|
|||
|
|
XXX b = braid on cable
|
|||
|
|
XXX c = center conductor
|
|||
|
|
XXX --- = ANY wire
|
|||
|
|
XXX
|
|||
|
|
XXX
|
|||
|
|
XXX
|
|||
|
|
|
|||
|
|
|
|||
|
|
Cordless Telephone/Baby Monitor frequency review:
|
|||
|
|
-------------------------------------------------
|
|||
|
|
|
|||
|
|
Base frequencies: 46.61 to 46.97 Mhz
|
|||
|
|
Handset frequencies: 49.67 to 49.97 Mhz
|
|||
|
|
|
|||
|
|
Baby Monitors: 49.00 to 50.00 Mhz (reported)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
Please for info!
|
|||
|
|
---------------
|
|||
|
|
|
|||
|
|
If you live in CA, especially the SF Bay Area, please call
|
|||
|
|
me on The Hole in the Wall. I am looking for people to swap
|
|||
|
|
frequencies with. I also need some good bbs's to call, like:
|
|||
|
|
|
|||
|
|
|
|||
|
|
Spectrum Analysis Center - (714)/532-2300
|
|||
|
|
A.N.A.R.C. - (913)/345-1978
|
|||
|
|
|
|||
|
|
Thanks to these bbs's for all the information that we have
|
|||
|
|
shared. And join Radio Communications Monitoring Association,
|
|||
|
|
I finally did! (PO Box 542, Silverado CA, 92676, $18.50)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
- Adam Gott -
|
|||
|
|
|