HDTenEightyP/NetNews huggingface dataset:
From: crisp@netcom.com (Richard Crisp)
Subject: Re: spectrum display integrated with computer software?
Date: Mon, 07 Sep 92 03:23:25 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Keywords: spectrum dispaly, software, on computer screen

In article <1992Sep7.005152.23933@mnemosyne.cs.du.edu> kmasrani@nyx.cs.du.edu (Kamlesh Masrani) writes:
>
>Question:-
> 
>In what way is a spectrum display useful to the shortwave listener?  The
>only use I can think about is picking out RTTY frequencies?
>
>
>Kamlesh Masrani
> 

Well one thing that comes to mind right away is that you can see utility
activity near where you are tuned. For example if there was a two-way
SSB conversation going on 30Khz away from where you are tuned, you]
would notice the pip if you used a real spectrum analyzer or panadaptor.
I have a surplus Singer spectrum analyzer hooked to my IF out
of my R7000 and can find lots of stations on UHF that way, but also
sometimes hook the IF out of my R71A or R70 and tune it with my R7000
on the 70+Mhz that it is cenetered on and can then see the HF spectrum
as well. Kind of a kludgy way of having a 70mhz panadaptor (my singer
will go to 30mhz only) but it works.

If you get a chance to try a real panadaptor or SA in this way you will
be suitably impressed. The problem with making a spectral plot using 
the reciever and a computer program is that you cannot notice fast happening
events. A panadaptor or a spectrum analyzer will not have that limitation.

-- 
Richard Crisp                 Cupertino, Ca.                crisp@netcom.com
(415) 903-3832 wk  "Time for a clean sweep of Congress"   (408) 253 4541 fax

A government that is afraid of an armed populace is a government
the populace should be afraid of.
From: gjensen@ersys.edmonton.ab.ca (Glenn Jensen)
Newsgroups: rec.radio.shortwave
Subject: RS DX-390
Date: Sun, 13 Sep 92 11:28:02 MDT
Organization: Edmonton Remote Systems #1, Edmonton, AB, Canada

Was looking at purchasing the Radio Shack DX-390, anyone have any 
experience with this model.  All info, opinions will be greatly 
appreciated.. thanks in advance....
bye

Glenn Jensen              gjensen@ersys.edmonton.ab.ca
From: caf@omen.UUCP (Chuck Forsberg WA7KGX)
Newsgroups: rec.radio.shortwave
Subject: Re: WWCR
Date: 13 Sep 92 03:50:13 GMT
Article-I.D.: omen.1992Sep13.035013.7219
Organization: Omen Technology INC, Portland Rain Forest

It's Saturday night (Sep 12) and WWCR is getting nailed with
QRM.  The powerhouse RTTY on the upper sideband is back with us.
The RTTY is about 20 db stronger than WWCR as received in the
Portland Oregon rain forest.

Now there is a second RTTY signal camped on WWCR's lower
sideband.  While not as strong as the upper sideband RTTY, the
RTTY on the lower sideband makes a mess even on SSB reception.
A notch filter helps some, but by now the audio sounds worse
than CBS StereoSound(Tm).

It's hard to imagine how anyone without a fancy communications
receiver would be able to enjoy the show.

If WWCR moved to the RTTY's mark or space frequency
the RTTY station might be forced to move somewhere else.

-- 
Chuck Forsberg WA7KGX          ...!tektronix!reed!omen!caf 
Author of YMODEM, ZMODEM, Professional-YAM, ZCOMM, and DSZ
  Omen Technology Inc    "The High Reliability Software"
17505-V NW Sauvie IS RD   Portland OR 97231   503-621-3406
From: epcodjs@houston.unocal.com (Doug Seyler)
Newsgroups: rec.radio.shortwave
Subject: Japan Radio NRD-525 vs NRD-535
Date: 11 Sep 92 16:46:37 GMT
Distribution: usa
Organization: Unocal Corporation, Sugarland, Texas
Originator: epcodjs@union3



I am in the market for a new shortwave receiver. The current price of the NRD-525
is really attractive. The NRD-535 is around $800 more. Is the '535 worth that much
more or is this just a very good clearance price on the '525? What would I be
giving up by going for the '525 instead of the '535 (besides the opportunity to
spend a whole lot more money)?

Thanks!

Doug Seyler
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
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Newsgroups: rec.radio.shortwave
Date:         Wed, 9 Sep 1992 09:58:31 FULL
Reply-To:     PACER@CITADEL.BITNET
Comments:     Warning -- original Sender: tag was SWL$L@CUVMB
From:         PACER@CITADEL.BITNET
Subject:      Radio, Handheld,

I just picked up 4-GE MPX4B radios from government surplus. I was
wondering where can I get some info on these radios. Also, is it possible
to change the frequency? Any info would be greatly appreciated!
Thanks
From: toad@apple.ucsb.edu (Marazita)
Newsgroups: rec.radio.shortwave
Subject: National HRO-7 taken
Keywords: national hro-7
Date: 8 Sep 92 20:41:38 GMT
Distribution: usa
Organization: University of California, Santa Barbara

The National HRO-7 receiver that was looking to be adopted has
tentatively found a good home.

Thanks,
Tom
=======================================================================
Tom Marazita                                     |INET:  toad@ucsb.edu
Center for Computational Sciences and Engineering|VOICE: 805-893-3221
University of California                         |
Santa Barbara, CA 93106
From: ercn72@festival.ed.ac.uk (R.J.Hare)
Newsgroups: rec.radio.shortwave
Subject: Radio Australia
Date: 9 Sep 92 08:40:45 GMT

Someone recently asked for information on Radio Australias broadcasts to
Europe. I just received a mailing from ABC listing their shortwave
transmissions in English. Too much detail to give it all here, but here is the
gist:

Radio Australia does not direct broadcasts specifically at the UK/Europe, but
recommend that you listen to some of their Middle East/Pacific transmissions.
It suggests the following times & frequencies:

0700-0900 - 21590
0800-1300 - 21725
1430-1900 - 13755 9540
1900-2100 - 7260 6020
0730-0830 - 15240

I tried the 7260/6020 frequencies between 1915-2030 last night on my small
portable (Phillips AE 3405/20) and was able to receive both frequencies well
enough to listen to speech.

Full information from:

Radio Australia
PO Box 755
Glen Waverley
Victoria
Australia
3150

Roger Hare
r.j.hare@edinburgh.ac.uk
From: mcovingt@athena.cs.uga.edu (Michael A. Covington)
Newsgroups: rec.radio.shortwave
Subject: Re: 2010--Good vs Bad
Date: 5 Sep 92 18:09:54 GMT
Organization: University of Georgia, Athens

The 2010 is an _excellent_ radio for DXing.  For serious work, I'd suggest
getting an antenna tuner (cost: about $40) and a fairly long outdoor
antenna; but you can get good reception with the built-in whip, perhaps
with a wire clipped to it.

I would also suggest, for serious DXing, an add-on audio filter.  The
filters in the 2010 are not _exactly_ to my taste.  And the sound is a lot
better if you run it through your stereo system.

-- 
+ Michael Covington - Artificial Intelligence Programs - U of Georgia - USA 
+ Unless otherwise noted, these are private opinions, not official statements.
+ VOTE NO GEORGIA LOTTERY - we need not imitate mistakes of other states.
From: ajay@acsu.buffalo.edu (Ajay Shekhawat)
Newsgroups: rec.radio.shortwave
Subject: Re: Internet on BBC Waveguide
Date: 7 Sep 92 03:57:34 GMT
Organization: University at Buffalo, Dept. of Computer Science

huopio@lut.fi (Kauto Huopio) writes:
: 
: Well, I think it is about time. Quite many international broadcasters
: have some kind of Internet connections. The very active persons in the
: field are George Wood @ Radio Sweden and Jonathan Marks @ Radio
: Netherlands, and all the people at CSM. There are some excellent and
: rather inexpensive systems in London that offer e-mail and news, so it
: would be rather easy to get accounts. If I have understood it
: correctly. BBC Recearch Departiment has some e-mail or news connetions
: (can anybody confirm this?). Who is going to do the lobbying?
: 
: --Kauto
: 
: PS:BBC Monitoring offers their reports in electronic form, so they
: must have some kind of e-mail, too..

It looks like atleast 2 of the departments at BBC are on the net.
Here are the relevant entries from the uumap file "u.gbr.1" :
(Suitably edited to make it less cryptic)
---
Name	 bbc
Org.	 Design and Equipment Department, British Broadcasting Corporation
Contact: Brandon Butterworth, David Carter
Email:	 postmaster@dd.eng.bbc.co.uk
Phone:	 +44 81 747 4334 x4278
Postal:  Avenue House, Power Road, Chiswick, London W4 5PG
Coords:	00 16 39 W / 51 29 31 N
# UK domain name
bbc	.dd.eng.bbc.co.uk
bbc = dd.eng.bbc.co.uk

Name	 bbcerd
Org.	 BBC Engineering Research Department
Contact: D G Kirby, A J Mason
Email:	postmaster@rd.eng.bbc.co.uk
Phone:	+44 737 832 361
Postal:	Kingswood Warren, Tadworth, Surrey, KT20 6NP
Coords:	00 12 44 W / 51 17 17 N
# UK domain name
bbcerd	.rd.eng.bbc.co.uk
bbcerd = rd.eng.bbc.co.uk
----

Maybe someone should send mail to the Postmaster at these sites, and ask...

Ajay

--
Ajay Shekhawat 
		USPS Center of Excellence for Document Analysis and Recognition
		S.U.N.Y., Amherst, NY - 14260
		Email: ajay@cs.Buffalo.EDU
From: ad207@cleveland.Freenet.Edu (Brett Kollar)
Newsgroups: rec.radio.shortwave
Subject: Re:  Hand-held frequency counter recommendations sought
Date: 12 Sep 1992 02:41:20 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: slc10.ins.cwru.edu


The only radio stations that are marked on aviation maps (sectionals)
are the AM broadcast stations.  The are basically used as navigational
beacons with an ADF in the aircraft.  

-- 
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Original_To:  Jnet%"SWL$L@CUVMB"
Newsgroups: rec.radio.shortwave
Date:         Thu, 10 Sep 1992 15:08:00 EST
Reply-To:     KEESBUG@SNYALFVA.BITNET
Comments:     Warning -- original Sender: tag was SWL$L@CUVMB
From:         KEESBUG@SNYALFVA.BITNET
Subject:      Panasonic Radio

I just purchased an old Panasonic short wave radio.  It is a RF-4800.  It looks
in good shape and seems to work well.  I don't have the manual and know nothing
else about it.  Does anybody have any info about this machine ?
Newsgroups: rec.radio.shortwave
From: crisp@netcom.com (Richard Crisp)
Subject: Re: R7000 relay replacement with solid state switch?
Date: Sun, 06 Sep 92 02:00:07 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 

In article <VB3DqB1w165w@pranny.uucp> lee@pranny.uucp (Lee Reynolds) writes:
>The title says it - anyone know of a circuit I can drop in to
>my R7000 to replace the slow mechanical relay?
>
>This should make it fly with a computer controller.


I haven't tried this, but included with the directions on using Sam Dunham's
ScanStar program is the following information on modifying the R7000 to make it
run faster in computer controlled operations.

"A better and more reliable approach is to replace the relay with an opto-
isolator. This completely solves the problem allowing the R7000 to reach
its ultimate scanning speed."

"To make this modification, you will need to replace relay RL1 on the R7000 main
board (Left hand side) with an opto-isolator. You will also need to change R46.
Check the optoisolator data sheet for maximum values and desired operating 
current. Almost any opto-isolator will work. For the 4N26 device operated at
10mA forward current, R46 should be 1200 ohms and at least 1/4 watt. Opto-
isolators will not tolerate abuse like a mechanical relay will, so be careful
what you plug into it! Clearly label any changes made on the
rear panel."

"Some users have reported that a further improvement in scanning speed can
be obtained by connecting a 470 ohm resistor across R18 on the R7000
logic board."

Again, I haven't tried these mods, but I do plan od doing so at
smoe time in the future. Perhaps if anyone does try it before I get
around to doing it, they will be willing to share their experiences
with the net? I will when I do it.

-- 
Richard Crisp                 Cupertino, Ca.                crisp@netcom.com
(415) 903-3832 wk  "Time for a clean sweep of Congress"   (408) 253 4541 fax

A government that is afraid of an armed populace is a government
the populace should be afraid of.
Newsgroups: rec.radio.shortwave,uk.misc
From: slee@eng.auburn.edu (Sanguk Lee)
Newsgroups: rec.radio.shortwave
Subject: HELP FOR FINDING KOREAN BROADCAST
Date: 7 Sep 92 16:54:04 GMT
Reply-To: slee@eng.auburn.edu
Organization: Auburn University Engineering

HELLO !

I BOUGHT A SHORTWAVE RADIO FROM DAK AND I'VE TRIED TO CATCH 
KOREAN BROADCAST SEVERAL TIMES BUT I FAILED.
IF ANY OF YOU KNOW THE BROADCAST SCHEDULE OF KOREAN (I MEAN "FROM KOREA")
LET ME KNOW.
IN ADDITION TO THIS, IS THERE ANY WAY TO IMPROVE CATCHING ABILITY OF STATIONS
BY USING ANTENNA. IF IT IS, HOW?
THANKS IN ADVANCE

Sanguk LEE
_______________________________________________________________________
Sanguk Lee : 644 W. Magnolia Ave. #A11, Auburn, AL36830, USA
		(205) 826-8358; (205) 844-6806

	Dept. of Aerospace Engineering
	Auburn Univ.
	Auburn, AL36849
_______________________________________________________________________
From: billn@hpcvaac.cv.hp.com (bill nelson)
Newsgroups: rec.radio.cb
Subject: Re: Geeks on the Air
Date: 14 Sep 92 04:53:40 GMT
Distribution: na
Organization: Hewlett-Packard Company, Corvallis, Oregon USA

rrw@elden (Robert Wier) writes:
: >>: And then there's the one about the guy who lived near a 50 kW transmitter.
: >>: He used fluorescent lite tubes without the fixtures to illuminate his
: >>: home.  When he went to bed he put them all in the closet.
: >>
:     Along these same lines, this winter try the following:
: 
:     Take a flourscent light tube (burned out is ok, as long at the
:     tube's internal gas is still intact) and hold one end of it
:     as you scuff your shoes across the carpet.  The dryer the
:     better, so try it after a dry cold front has come thru.
: 
:     The static electricity you generate will make for some interesting
:     lighting effects in the tube (escpecially at night) when you 
:     discharge it to ground (doorknobs, etc).

Yes, you get a small amount of light - caused by the spark discharge
exciting the phosphors in the tube. However, there is not near enough
power available to light the tube.

Bill
From: sl9b4@cc.usu.edu (Deep Six)
Newsgroups: rec.radio.cb
Subject: Re: Geeks on the Air
Date: 15 Sep 92 02:09:22 MDT
Distribution: na
Organization: Utah State University

Well, if nothing else, this thread has dispelled/cleared up a lot of
myths, many of which I had wondered about myself. Real interesting 
stuff. If I didn't know better, I would think that the guy who made
the original post packed it full of urban/radio legend just to start
some discussions.

Now about the radio signals playing on people's fillings. That one is
very definitely true -- I saw it myself on an episode of Gilligan's 
Island. It happened to Gilligan. Luckily, The Professor was there to
explain everything. I think it may have turned Ginger on. That's all 
I remember.

Okay,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chadd VanZanten SL9B4@CC.USU.EDU + ``The whiter the bread, the sooner you're 
dead.'' --Ancient Hindu proverb
From: bphdarcy@ubvmsb.cc.buffalo.edu (SJ Roc D'Arcy, MBP)
Newsgroups: rec.radio.cb
Subject: Re: Geeks on the Air
Date: 14 Sep 92 16:16:00 GMT
Distribution: na
Organization: University at Buffalo
News-Software: VAX/VMS VNEWS 1.41

In article <1992Sep12.155132.22744@mercury.cair.du.edu>, elesatz@diana.cair.du.edu (Eric LeSatz) writes...

As much as the original poster of this subject seemed to go a bit overboard 
in his attempt to display his frustration, for the most part I must agree 
with his feelings.  I have a real need for short range CB communication 
(agricultural) and in my area (North of Buffalo NY), we have more "Geeks" 
than we have channels.

Most are juvenal (sp?) little folks with nothing better to do than 
intentionally interfer with communications of others.  We have one fellow
(with a mobile unit) than must run a hight power linear and then has some
type of Euro-siren wired directly into his mike input.  When he runs
this little device he completely blanks out all transmissions 3 to 4 
channels to each side.  

The FCC is no help.  I have even gone so far as locating one the infamous 
linear jockies in my area and letter then know all the specs.  Three months 
later he is still out there playing Godzilla (also his handle).

Its nice that the skip is going away so I don't get all the noise from
south of the equator, but still there are days when I can't be heard one 
mile from my base station, due to some fool playing with some stupid toy.

Being a person who has owned various CB rigs (all legal) since the 
mid-70's, I am beginning to get a bit fed up with things myself.  What 
needs to be done, is for a lot of people to get together and start applying 
pressure to the FCC to start doing their job.  Hams included, its not long 
before these fools come to find they can annoy people on other bands too.

SJRD
From: mcc0798@cuphub.cup.edu
Newsgroups: rec.radio.cb
Subject: CB _and_ AM-FM is there a way?
Date: 15 Sep 92 19:05:46 GMT
Organization: California University of Pennsylvania, California, PA

Is there a way I can listen to both my AM-FM radio and my CB concurrently?
What I'm really lloking for is a way for my CB to mute my AM-FM when a
transmission is recieved.  My AM-FM has an input that can be connected
to a Cellular phone so that the phone can send a high (I'm guessing 12vdc)
signal to the AM-FM and cause it to mute.  Is there a CB that uses the same
technology?  Is there some way I can build some sort of relay based on a
transistor to do the work for me?  Currently I'm going crazy form all that
noise. (CB, AM-FM, Radar Detector, Road Noise, oh my!)

Dan The Man
From: john.denison@yob.sccsi.com (John Denison) 
Newsgroups: rec.radio.cb
Subject: RE: NEW RADIO SHACK HANDH
Date: 3 Sep 92 16:55:00 GMT
Distribution: world
Organization: Ye Olde Bailey BBS - Houston, TX - 713-520-1569
Reply-To: john.denison@yob.sccsi.com (John Denison) 

-> I cannot believe a CB rig has a sensitivity quoted as .05uV for 10dB
-> (s+n)/n... especially an AM set. 0.5 uV seems far more reasonable.
-> Here in

That is exactly my point. .05 uv doesn't sound right to me for a CB
unit.
From: an511@cleveland.Freenet.Edu (Vince Yankey)
Newsgroups: rec.radio.cb
Subject: Re: Attenuation at 27MHz
Date: 6 Sep 1992 14:52:19 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Reply-To: an511@cleveland.Freenet.Edu (Vince Yankey)
NNTP-Posting-Host: hela.ins.cwru.edu


Cable Attenuation dB per Hundred Feet:

RG-174, 174A                                about 6dB
RG-58A, 58C                                 about 2.5dB
RG-58, 58B                                  about 2.2dB
RG-59, 59A, 59B, RG-58 Foam Diel.           about 2.1dB
RG-62, 62A, 71, 71A, 71B, RG-59 Foam Diel.  about 1.5dB
RG-8, 8A, 9, 9A, 9B, 11, 11A, 12, 12A,13,
13A, 213, 214, 215, 216                     about 1.3dB
RG-8 Foam Diel.                             about 0.9dB
Belden 9913                                 about 0.7dB
300-Ohm Tubular                             about 0.55dB
RG-17, 17A, 18, 18A                         about 0.45dB
1/2" 75-Ohm "Hardline"                      about 0.43dB
1/2" 50-Ohm "Hardline"                      about 0.40dB
3/4" 75-Ohm "Hardline"                      about 0.34dB
3/4" 50-Ohm "Hardline"                      about 0.33dB
7/8" 75-Ohm "Hardline"                      about 0.28dB
7/8" 50-Ohm "Hardline"                      about 0.25dB
Open Wire, TV Type, 1/2" and 1"             about 0.18dB

My CB requires a 50-Ohm cable so I can only use:
RG-8, RG-8 FOAM, RG-8A, RG-9, RG-9A, RG-9B, RG-17, RG-17A, RG-55, RG-55A,
RG-55B, RG-58, RG-58 FOAM, RG-58A, RG-58B, RG-58C, RG-141, RG-141A, RG-142,
RG-142A, RG-142B, RG-174, RG-213, RG-214, RG-215, RG-223, and BELDEN 9913.

Note I didn't make mention about ease of use.  Some of these coax are .875"
in diameter and rather stiff esp. "Hardline". :-)

I have never worked with Open Wire.  You will need to consult with someone
more knowledgeable for that.
From: rrw@elden (Robert Wier)
Newsgroups: rec.radio.cb
Subject: Re: Geeks on the Air
Date: 13 Sep 92 22:23:36 GMT
Distribution: na
Originator: rrw@elden.cse.nau.edu

>>: And then there's the one about the guy who lived near a 50 kW transmitter.
>>: He used fluorescent lite tubes without the fixtures to illuminate his
>>: home.  When he went to bed he put them all in the closet.
>>
    Along these same lines, this winter try the following:

    Take a flourscent light tube (burned out is ok, as long at the
    tube's internal gas is still intact) and hold one end of it
    as you scuff your shoes across the carpet.  The dryer the
    better, so try it after a dry cold front has come thru.

    The static electricity you generate will make for some interesting
    lighting effects in the tube (escpecially at night) when you 
    discharge it to ground (doorknobs, etc).


 - Bob Wier

  ---------- insert favorite standard disclaimers here ----------
                   College of Engineering
      Northern Arizona University, Flagstaff Arizona
  Internet: rrw@naucse.cse.nau.edu | BITNET: WIER@NAUVAX | WB5KXH
From: john.denison@yob.sccsi.com (John Denison) 
Newsgroups: rec.radio.cb
Subject: RE: NEW RADIO SHACK HANDH
Date: 3 Sep 92 16:59:00 GMT
Distribution: world
Organization: Ye Olde Bailey BBS - Houston, TX - 713-520-1569
Reply-To: john.denison@yob.sccsi.com (John Denison) 

-> .05uV is likely to be less than the atmospheric noise (though I don't
-> have a handy figure available), so it seems unlikely.  It would
-> certainly be a waste to design for such a sensitivity on HF.

That is why I was wondering if it should have been .5 and not .05. On my
Maxon I don't need it to be .5 because I can only hear noise on the very
very weak signals.
              
Newsgroups: rec.radio.cb
From: billn@hpcvaac.cv.hp.com (bill nelson)
Subject: Re: Single Trucker II Antenna
Organization: Hewlett-Packard Company, Corvallis, Oregon USA
Distribution: usa
Date: Fri, 11 Sep 1992 19:26:42 GMT

kh@sei.cmu.edu (Kurt Haverstock) writes:
: In article Single Trucker II Antenna of Fri, 11 Sep 92 00:57:50 GMT csalas@nyx.cs.du.edu (Carlos Salas) writes:
: 
: >I'm using a Fiber Glass Single Trucker II Antenna with my hand-held CB.
: >But, I would like to know the ohm's of this antenna cause my previous
: >CB burned out and I didnt knew the cause but I think it was the coax
: >cable I was using. It was a 75 ohm cable (cable-tv type) adapted to use
: >with the CB. Any suggestions?
: > 
: >Carlos Salas
: 
: Yow! The best thing you can do to prevent further mishaps is to get
: the right impedance cable. 10 ft. of RG-8M with connectors will only set you
: back about 8$ at your local Radio Shack. 52 ohm is the magic number.
: 
: BTW, are co-phasing and related impedance concerns covered in the FAQ?

Bah! The short length of coax is not going to cause any real problem. It
would produce less only about a 1.5:1 SWR. 

More likely would be a bad piece of coax (with a broken conductor) or
an antenna with a bad loading coil.

I trust the antenna is mounted on a good ground plane? Most antennas that
are designed for use on trucks require one. 

Bill
Newsgroups: rec.radio.cb,rec.radio.amateur.packet,rec.radio.swap