home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
QRZ! Ham Radio 3
/
QRZ Ham Radio Callsign Database - Volume 3.iso
/
buffalo
/
1750m.txt
< prev
next >
Wrap
Internet Message Format
|
1993-10-10
|
6KB
From: J..R..Pendleton@f851.n102.z1.fidonet.org (J. R. Pendleton)
Sender: NewsMeister@mcws.fidonet.org
Newsgroups: rec.radio.amateur.misc
Subject: Yes there is a 1750 Meter band
Date: Sun, 07 Jun 1992 21:30:26 -0700
Organization: Employer not involved in this.
As requested by several people, here is a collection of
highlights of the replies I recieved to "Does 1750 meters
really exist". It looks like one of the replies was from a
FAQ list, but since I got several requests to summarize,
I'll go ahead and consume the bandwidth.
Many thanks to all that took the time to reply. And many
thanks to all those who caught the error in my .sig. I
guess I'll go listen to the tapes some more :-).
Thanks again.
73s,
jerryp@key.amdahl.com
KC6RTO
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>From alan@dsd.es.com Wed Jun 3 06:43:44 1992
(K6X0)
...yes, Virginia, there is a real citizen's band between
160 and 190 KHz. The limitations are: one watt output
power, and the antenna can be no longer than 50 feet
including the feedline. There are some serious
experimenters using the band for propagation studies and so
on, but there is lots of room for CW signals. You may hear
several beacons operating there 24 hours a day. There is a
newsletter, but I do not know who publishes it. Other than
the power and antenna restrictions, as far as I know
anything goes. To my knowledge there is no commercially
made equipment available for this band - virtually everyone
builds their own transmitters, and most of the modern
receivers will tune down on that band. I listen there once
in a while with my TS-930 but have never been interested in
transmitting there. Good luck.
********************************************************
(KC6WUG)
...FCC part 15 (no license) 1750 meter band: 160-190 KHz.
1 watt max
input power. 15 meter maximum lenght of antenna +
feedline. With those power and antenna restrictions you
don't get much range.
*********************************************************
>From jkearman@arrl.org Fri Jun 5 07:55:06 1992
(KR1S) ^^^^
|------(AhHA! - So much for the benign
neglect theory --
JRP)
JP: Well, shucks. We have run articles about this band in
the past. I guess we should do it again. The band runs
from 160-190 kHz. You're allowed 1-watt output, total
length/height of antenna including feed line is 50 ft (max
allowed by law). Most folks put the xmtr right at the base
of the antenna.
You can join the Longwave Club of America, which was
organized in 1974 to promote DXing and experimentation on
frequencies below 550 kHz and activity on the 1750 meter
band. Membership in the LWCA and a one-year subscription to
The LOWDOWN is $12.00 by First Class Mail. Please make all
remittances payable to the Longwave Club, and mail to LWCA,
45 Wildflower Rd., Levittown, PA 19057. [Direct quote from
the LOWDOWN]
(See, we READ it here!)
The LOWDOWN is published monthly. Good luck and 73,
*******************************************************
>From: pdh@netcom.com (Phil Howard )
(KA9WGN)
Depending on your effective bandwidth, you can extend it.
I've read about very slow digital going something like 1000
to 2000 km.
*********************************************************
As promised, here's the summary of the information I
requested from the net a couple weeks ago regarding the
1750 meter band.
Does one need a license to operate on this band? No. This
means that you can choose your own callsign although
callsigns are not required.
What is this band for? Experimentation mainly. It is
especially fun to attempt QRP operation and one respondent
said that given the right type of modulation and antenna
setup, signals can travel 1000 miles or more with just
under one watt output! Lots of folks use CW beacons and
there is a radio club called The Lowfers (Low Frequency
Users, presumedly). Be aware that this IS NOT a ham band
although several LF receiver manu- facturers boast that
their units can "receive the 1750-meter ham band". You
will not find discussion of this band in the ARRL
publications BECAUSE it is not a ham band. Perhaps some of
the confusion here arises from the use by LF operators of
ham radio callsigns. Many hams also operate in this band
and use their own calls for identification, even though, as
mentioned above, a callsign is not required here.
What is the frequency limits of this band? The 1750 meter
band spans from 160 to 190 KHz.
What types of modulation may be employed? You may use CW
and AM voice. You may be allowed others (FM, RTTY, etc).
But the data I was able to gether was sketchy on this
point. One person though said that there are no
restrictions on modulation methods.
What are the legal power limits and other
transmitter-related restrictions? Transmitter power is
limited to somewhat less than one watt output. The maximum
power INPUT to the final should not exceed one watt. The
length of the antenna added to the length of the feedline
MAY NOT exceed 50 feet. Spurious emissions outside the
band must be 60db below the signal strength at the carrier
frequency.
Who may use the band? Anyone, so long as they comply with
the above regulations.
Where can I get more definitive and detailed information on
this band? The band is discussed in Part 15 of the Code of
Federal Regulations which you can pick up at your local
library (assuming it is a fairly big library), or you can
order it from the nearest US Government Bookstore. If any-
one knows where such a store is, please post its location.
I'd like to snag a copy of Part 15 myself.
Thanks to alan@dsd.es.com, kludge@grissom.larc.nasa.gov,
kc2wz!bob%fdurt1@uunet.UU.NET, brown@hpspkla.spk.hp.com,
markz@ssc.wa.com, and gary@ke4zv.uucp for all the
information they provided.
Happy Lowfering! :-)
**********************************************************
--
-- --- .-. ... . -.-. --- -.. . .-.. .. ...- . ...
.-.-.-
--... ...-- -.. . -.- -.-. -.... .-. - ---
* Origin: gated usenet/mcws.fidonet.org (818)352-2993
(1:102/851)