HDTenEightyP/NetNews huggingface dataset:
From: michaelm@cruzio.santa-cruz.ca.us
Newsgroups: rec.radio.shortwave
Subject: HOKA Code3 Demodulator
Keywords: rtty
Date: Fri, 25 Dec 92 13:02:05 PST
Reply-To: michaelm@cruzio.santa-cruz.ca.us



 
I have had the Code3 for about a month now. Overall I am pleased. 
As Tom Roach mentioned the software is a bit "quirky". The
quirkiness is mainly due to the "stupid" copy protection scheme (my
main complaint). It runs great on my 386 laptop but doesn't even
want to install on my OS/2 machine.

Given the copy protection sucks, the rest of the software is easy
to get started with but difficult to master. The Code3 does
everything, so by necessity it can be complicated. If you know what
you are hearing simply pick the mode from the menu. If you are not
sure, use the "shift-speed analysis" and then go to the
"autoclassify" screen. If the code3 has enough info (about 70% of
the time for me but I am new at this) it will lock on to the
correct mode and all you have to do then is press enter to take you
to the decoding screen.

There is a lot of stuff that I have not had enough time to sit down
and really figure out. There are tools like:

Correlation Raw signal
Correlation Mod signal
Correlation Bit
Character Analysis Duplex
ETC

These look good on the screen but I have very little idea how to
use them yet.

I have decoded modes with the Hoka that I never even knew existed.
The latest is Hellscrieber.

Summery
The Code3 does everything.
The software can be simple to complicated, depends on how far you
want to get into it.
The copy protection for the Code3 sucks the same way copy
protection sucks in general.

Base price $495
US distributors

J&J Enterprises
4001 Parkway Drive
Bossier City, LA 71112
Phone (318)683-2518 (8-5 CST)
FAX   (318)686-0774 

as for no on/off switch, leave it on as I do or unplug it. 
Newsgroups: rec.radio.shortwave,alt.radio.scanner
From: parnass@cbnewse.cb.att.com (Bob Parnass, AJ9S)
Subject: TV show depicts 150.6 MHz as a bugging frequency
Organization: AT&T Bell Laboratories, Naperville, IL
Distribution: usa
Date: Tue, 22 Dec 1992 13:41:09 GMT
Followup-To: rec.radio.shortwave
Keywords: American Detective, scanner radio, law enforcement communications


The December 21 episode of the American Detective television show
was about drug sting operations in Santa Cruz, California.

Did anyone else notice the Icom R-7000 receiver tuned to 150.600 MHz,
purportedly monitoring an undercover bug?   I think the agency involved
was called "CNET."

BTW, 150.6 MHz is in the band usually allocated to the US Army.
-- 
==============================================================================
Bob Parnass, AJ9S  -  AT&T Bell Labs  -  parnass@ihlpm.att.com - (708)979-5414
Newsgroups: rec.radio.shortwave
From: wa2ise@cbnewsb.cb.att.com (robert.f.casey)
Subject: Re: RICV radio (for the blind) - need info
Organization: AT&T
Date: Sat, 2 Jan 1993 21:27:08 GMT

In article <1993Jan1.023132.1@auvax1.adelphi.edu> schmidt@auvax1.adelphi.edu writes:
>Since the SCA's use, in most cases, subcarriers with low deviation and low
>injection, to avoid degrading the main channel signal of the station, they are
>not full fidelity services, kind of "AM" quality or so, and the coverage is
>less than that of the station they are piggybacked on, kind of like stereo
>compared to mono, only quite a bit worse, as far as service area reduction is
>concerned.  Also most SCA receivers restrict the reproduced bandwidth to reduce
>crosstalk from the main channel.

In past years, I've tried building SCA detectors into various FM radios.  
One thing I could never get clean was the damn interference from the main
audio signal of the FM station.  I've also had acquired commercially built
SCA recievers (McMartin I think one brand) and they also had similar 
interference.   What am I overlooking?  Antennas?  Or does the system 
have a fundamental flaw?
Newsgroups: rec.radio.shortwave
From: kludge@grissom.larc.nasa.gov (Scott Dorsey)
Newsgroups: rec.radio.shortwave
Subject: Re: wfla mystery
Date: 22 Dec 1992 20:29:59 GMT
Organization: NASA Langley Research Center and Reptile Farm
Distribution: rec
NNTP-Posting-Host: grissom.larc.nasa.gov

In article <1992Dec22.4230.11524@dosgate> "sander schimmelpenninck" <sander.schimmelpenninck@canrem.com> writes:
>I often hear a simulcast of Tampa, Florida broadcast station WFLA
>in the Toronto area on 25,870 KHz, using narrow-band FM. The
>frequency lies in the 11-metre broadcast band, but the modulation
>mode puzzles me. Does anyone know who is sending this signal and
>why? According to the World Radio Television Handbook, WFLA
>operates on 970 KHz with 5 KW.

I am not sure, but I know that a block of frequencies in the 25-26 MHz
band are used for remote broadcasts.  This is a very old band that is
seldom used anymore in this day of 950 MHz allocations and satellite
uplinks.  You may, however, be hearing the backhaul link from the station
to the remote site.
--scott
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Original_To:  BITNET%"swl$l@cuvmb"
Newsgroups: rec.radio.shortwave
Date:         Mon, 21 Dec 1992 13:05:00 EDT
Reply-To:     CHRISTOPHER HOBE MORRISON <CMORRISO@SNYESCVA.BITNET>
Comments:     Warning -- original Sender: tag was SWL$L@CUVMB
From:         CHRISTOPHER HOBE MORRISON <CMORRISO@SNYESCVA.BITNET>
Subject:      list.

Ernest,

        The Canadian government decided that international broadcasting was
a luxury it couldn't afford, while sending troops to Saudia Arabia in order
to prove that if Britain, France, and the US could it could, that stupid
display of me-tooism wasn't considered a luxury.

        Of course, they haven't given up their frequencies either.  I
personally believe that if they don't want to use them they should rent out
their transmitters to such stations as All India Radio and Radio Pakistan,
who don't get heard here too well.  Of course, I see from the Sackville
relay schedule that they do carry Korean broadcasting (it doesn't say if
it is in English), but it is at 0500 UTC when I listen to Kol Israel and then
to the other 45 minutes of Newshour.  When Israel is on summer time I listen
to Newshour the whole hour.  Anyway, I just can't listen to a Korean station
instead of Newshour but if the Canadians don't want to use the frequencies
and transmitter sites they should give them to somebody who does.  Mind you,
I do like to listen to As It Happens and the Royal Canadian Air Farce.

                                                Chris Morrison
                                                cmorriso@snyescva.bitnet
PS--actually, there are a number of countries, such as the Philipines, that
have no major shortwave voices at all, unless you count stations that relay
major foreign broadcasters or are copntrolled by foreign religious interests.
From: st1q9@jane.uh.edu (Devine, Della M)
Newsgroups: rec.radio.cb
Subject: Best Coax cabling
Date: 29 Dec 1992 11:29 CST
Organization: University of Houston
Distribution: world
NNTP-Posting-Host: jane.uh.edu
News-Software: VAX/VMS VNEWS 1.41    

What is the best coax cabling to use on a mobile CB for under $ 1  a foot?
I'm currently using Radio Shack's RG8/U (with the multi stranded center line of
14 guage size) and it cut out a lot of my noise interference with my stereo
system (my amp is right under my cb inside my center console) but i still 
notice a little interference when i turn my radio on (also 2 inches from my
cb unit mounted in my center console).  Is there anything i can do minimize
this interference without moving my stereo equipment?

thanx
william c devine ii
reply to:devine@pvhep.pvamu.edu
Newsgroups: rec.radio.cb
From: gary@ke4zv.uucp (Gary Coffman)
Subject: Re: 40 channels at onces?
Reply-To: gary@ke4zv.UUCP (Gary Coffman)
Organization: Destructive Testing Systems
Date: Thu, 31 Dec 1992 00:05:53 GMT

In article <18DEC199223284278@jane.uh.edu> st1q9@jane.uh.edu (Devine, Della M) writes:
>
>How would one make a transmitter that would transmit a CLEAN signal
>(not linear splatter) over ALL 40 channels simultaneously?
>Would you have to have 40 radios? 40 crystals? 40 antennae? what?

There are several ways. The most straightforward would be to use
40 exciters into a ultra-linear broadband amplifier and antenna.
There are also ways of generating comb spectrums that would do the
same thing with a single exciter.

Gary

-- 
Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems |    we break it.     | uunet!rsiatl!ke4zv!gary
534 Shannon Way             |    Guaranteed!      | emory!kd4nc!ke4zv!gary      
Lawrenceville, GA 30244     |                     | emory!ke4zv!gary@gatech.edu
Newsgroups: rec.radio.cb
From: gary@ke4zv.uucp (Gary Coffman)
Subject: Re: SWR Tuning and PLL
Reply-To: gary@ke4zv.UUCP (Gary Coffman)
Organization: Destructive Testing Systems
Date: Tue, 29 Dec 1992 09:49:32 GMT

In article <1992Dec25.084712.14174@hpcvaac.cv.hp.com> billn@hpcvaac.cv.hp.com (bill nelson) writes:
>
>It certainly will make the coupling of the transmitter to the mismatched
>line/antenna system efficient.  If there is no radiation from the cable, 
>then your statement would be correct. If the coax is radiating, due to the
>mismatch, then the antenna efficiency could be very poor.

A mismatch won't make the feeder radiate, but an imbalance will. That's
a separate issue. A perfectly matched antenna can still have lots of
feeder radiation if antenna balance is not correct. That's where feeder
routing and baluns come into play. A mismatch will only cause reflected
waves *inside* a coax, feeder radiation requires RF currents on the
*outside* of the coax.

>Although I never have done so myself, I knew a ham who ran better than a
>5:1 SWR using an open-wire feeder. The loss was so low that he put out a
>good signal.  He did say that there was a fair amount of radiation from
>the feeder, however. I don't know if this was due to the feeder/antenna
>mismatch or to too short an antenna.

Physical balance problems with the antenna. An open wire feeder is
inherently balanced and won't radiate unless something unbalances
it. That could be one end of the flattop near a conductive object,
asymetric feedpoint, etc. A perfect feedpoint impedance match won't
cure these types of problems.

Gary

-- 
Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems |    we break it.     | uunet!rsiatl!ke4zv!gary
534 Shannon Way             |    Guaranteed!      | emory!kd4nc!ke4zv!gary      
Lawrenceville, GA 30244     |                     | emory!ke4zv!gary@gatech.edu
Newsgroups: rec.radio.cb
From: gary@ke4zv.uucp (Gary Coffman)
Newsgroups: rec.radio.cb
Subject: Re: SWR Tuning and PLL
Date: 20 Dec 92 14:44:24 GMT
Reply-To: gary@ke4zv.UUCP (Gary Coffman)
Organization: Gannett Technologies Group

In article <1992Dec18.213844.7701@hpcvaac.cv.hp.com> billn@hpcvaac.cv.hp.com (bill nelson) writes:
>v054rtzw@ubvmsb.cc.buffalo.edu (RUFUS) writes:
>: 
>:  Jason,
>:   An SWR meter measures the Standing Wave Ratio hence SWR. What SWR is is the
>: amount of reflexed power recieved by your rig from a mistuned antenna. A 
>
>Close. It is the ratio between the power reaching the antenna and the power
>reflected by the antenna.

The SWR, properly the VSWR, is the ratio of the forward voltage on the
line to the reverse voltage on the line at any point along the line.
The "standing wave" is the vector sum of these two voltages. All the
power injected into the transmission line by the transmitter is dissipated 
in either the antenna or the line losses, none is absorbed by the radio. A
mismatch can affect the *efficiency* of the radio output stage, thus causing
heat buildup, but this isn't power "reflected" into the radio from the
line.

[deleted]
All the rest was right on the money.

Gary KE4ZV
Newsgroups: rec.radio.cb
From: ad838@yfn.ysu.edu (Michael Rolfes)
Subject: REACT team members
Organization: Youngstown State University/Youngstown Free-Net
Date: Wed, 23 Dec 1992 23:49:26 GMT


Are there any REACT team members out there?
 
I am trying to get a listserv set up for REACT team members,]
 
Mike


Michael P. Rolfes  OVR Unit #43, usr2879a@cbos.uc.edu
**********************************************************
            Ohio Valley REACT Inc. #2601 
                Cincinnati, OH  USA
CB Channel 9 KHY-1303 ***** VHF-FM 151.625 WPBC-440.
 
Hamilton County Disaster and Emergency Services  
American Red Cross --Standard First Aid 
American Heart Association -- Basic Life Support Certified
**********************************************************
-- 
Mike Rolfes
usr2879a@cbos.uc.edu
Cincinnati, OH  USA
Newsgroups: rec.radio.cb
From: ming@enel.ucalgary.ca (Yang Ming)
Subject: Re: SWR Tuning and PLL
Date: Mon, 28 Dec 92 21:06:22 GMT
Organization: ECE Department, U. of Calgary, Calgary, Alberta, Canada

In article <1992Dec28.153913.25266@ke4zv.uucp> gary@ke4zv.UUCP (Gary Coffman) writes:

>mirror. The only effect of the reverse wave on the transmitter is to
>shift the operating point, which under certain conditions can reduce
>the *efficiency* with which the stage turns DC power to RF power.
>*That* can cause the output stage to get hot, but it has *absorbed*
>none of the reverse power. It is not a load.
>

This explanation is questionable. As well understood, the operating point is
determined by the DC bias. Of course when working in nonlinear region, the
operating point also moves with the magnitude of the power, but a) this is
only secondary effect, and b) most amplifiers work in linear region.

It's not true that output stage is not a load. There is a parameter called
*output impedance* for every circuit, which has both real and imaginary
parts. Physically speaking, the output stage is nothing elso but a piece
of semiconductor, which has bulk resistance. This absorbs power.

Generally all amplifiers absorb power. The picture is clearer if we look at
vacuum amplifiers. High power radar has to use non-reciprocal devices such
as isolators or circulators to absorb or re-reflect the return power. It is
a risk of burning down your magnitron in your microwave oven if you turn it on
with out any food in the oven (open circuit, which is the same as short circuit
for microwave, all power is reflected to output device.), or if you run the
machine with some matel objects in the oven (reactive load, which reflects
a lot of power.).

Ming.
From: randall@informix.com (Randall Rhea)
Newsgroups: rec.radio.cb
Subject: Re: Galaxy V
Date: 18 Dec 92 01:54:54 GMT
Organization: Informix Software, Inc.

mellob@cary104.its.rpi.edu (Daffy Duck) writes:


>		I'm looking for mods (serious mods)  for channeling, unlocking

>		the RIT, higher output transistors (or peaking procedures), and 

>		will it support FM. Please post or email, thanks in advance.

>		-Brett        mellob@rpi.edu


Request a catalog and send $2 to:

CBC INTERNATIONAL
P.O BOX 31500AA
PHOENIX   AZ  85046

 
 I recommend the "Screwdriver Expert's CB Guide" which is available 
 from that company.  They will also sell you a mod guide specifically 
 for that radio.  It will talk in detail about unlocking the RIT, 
 changing the rig to 10 meters, peaking, FM, etc.
  

-- 

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Randall Rhea                                        Informix Software, Inc. 
Project Manager, MIS Sales/Marketing Systems    uunet!pyramid!infmx!randall
From: randall@informix.com (Randall Rhea)
Newsgroups: rec.radio.cb
Subject: Re: mods for realistic htx-100 10m
Date: 24 Dec 92 00:22:54 GMT
Organization: Informix Software, Inc.

mellob@cary111.its.rpi.edu (Chevy Chase) writes:


>   although I have not come across the mods for the Realistic HTX-100 10meter
>   moblie, i think it could probably be modified.
>	The HTX-100 is very similar in operation and appearance to the
>	uniden 2510/2600. Both of which can be modified for 30 watts all modes
>	and to work from 25.000MHz to 27.999Mhz. The more you want, the more
>	expensive it is esp. for the 2600 which is the newer unmodifyable
>	(yeah right) version of the 2510. (The only difference is the PLL
>	
>	chip.) I've done a little work with realistic CB's and they
>	all have "Uniden" printed on various parts. This leads me to
>	assume that the HTX-100 could probably be modified.


The HTX-100 can be modified for expanded frequency coverage.  The mod
is in the Artsci "Radio/Tech Mods" book- the most recent volume.  The
radio only has USB and CW.  Of course, using the radio on non-ham
frequencies is illegal.  The rig has a 25 watt output out of the box.
I suppose you can tweak it to get 30 watts, but it may do more harm
than good.  Remember, you need to at least double your RF output
to have a stronger signal on the other end. (not technically correct,
only a general rule of thumb)

The Uniden President 2510 can be modified very easily by cutting
traces to the microprocessor.  The Artsci book has the mod also.
It is all-mode (AM, FM, USB, LSB, CW)

The Uniden President 2600 cannot be modified without replacing the
microprocessor.   A company called Chipswitch in Santa Rosa, CA has
a replacement chip for it. ($60)  It has memories and expanded frequency
coverage.   The modification is quite difficult, and I would not
recommend it unless you have experience working with radios.

CBC International has lists of CBs that can be modified or not.
They also have detailed mod plans on a number of different radios.
They advertise in -QST- and other ham magazines.  

It is illegal to use HTX-100s, 2510s or 2600s for transmitting on
CB or any other non-ham frequency.

-- 

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Randall Rhea                                        Informix Software, Inc. 
Project Manager, MIS Sales/Marketing Systems    uunet!pyramid!infmx!randall
Newsgroups: rec.radio.cb
From: powell@interlan.interlan.com (Glen D. Powell)
Subject: Delta SSB Club seeks new members FREE!
Organization: Racal Datacom, Inc., Boxborough, MA (1-800-LAN-TALK)
Date: Mon, 21 Dec 1992 21:15:49 GMT


The World-Wide Delta Radio SSB Club is actively seeking new members.
We have chapters in most of the USA states and most countries around the
world. The Delta Club is NOT a skip club, per se. Our only rules are to
promote proper legal operation, goodwill and cooperation and also the
general enjoyment of the hobby. Many Delta Club chapters run regular
check-in networks at predescribed times and frequencies. We also
publish a monthly newsletter. There are NO FEES and NO DUES to join.
You must join the local chapter in your state, province or country.
If you would like more information on the World-Wide Delta SSB radio
club please send a self-addressed business-size envelope with 
TWO STAMPS (for within USA) and we will send you a generous information
package including a map of the USA and all USA chapters and also the
addresses of all the USA, Canada provinces and coutry addresses.
The club will assign you an official Delta SSB call sign. ALL IS NO CHARGE.

Please write to:

9 DELTA RADIO CLUB
PO BOX 1061
Hollis NH 03049 USA

The 9 DELTA club is the New Hampshire USA chapter of the
World-Wide Delta SSB Radio Club.

-glen, 9 DELTA 1, NH USA Chapter President and Secretary


-- 
Fundsalo Racing-73 CP RAIV 455HO Firebird GTO, 85 Quattro, 84&86 4000CS Quattros
The Few..... The Proud..... The Concurrently Executed..... Ex-Alliant
Don't buy japanese *ANYTHING*
From: myers@hpfcso.FC.HP.COM (Bob Myers)
Date: Wed, 23 Dec 1992 19:45:18 GMT
Subject: Re: SWR Tuning and PLL
Organization: Hewlett-Packard, Fort Collins, CO, USA
Newsgroups: rec.radio.cb

> If  you wish to be precise, this is all true. However, for run-of-the-mill
> CB purposes, it is the ratio of transmitted to reflected power. Why confuse
> people with all the possible types of standing wave, or methods of determining
> the SWR?

Well, for one thing, Bill, you're still totally WRONG, and you're going
to be badly misleading poor Joe CB Operator out there as to what his "SWR
meter" is telling him.

SWR is NOT the ratio of transmitted to reflected power.  To think of it this
way implies a complete misunderstanding of what SWR is all about.  For example, 
an SWR of 2:1 does NOT mean that you're getting half the power reflected, or
twice the power reflected, or anything else you can get from the ratio of
the number "2" to the number "1".  With a 2:1 SWR, only ~11% of the power is
being reflected from the load, and this is usually quite tolerable.  Your
way, people are going to be really concerned if they see anything over about
1.1:1!!!

It is misinformation like this that has led to a lot of the obsessive 
behavior we see in the area of VSWR in the CB and ham communities.


Bob Myers  KC0EW   Hewlett-Packard Co.      |Opinions expressed here are not
                   User Interface Tech. Div.|those of my employer or any other
myers@fc.hp.com    Fort Collins, Colorado   |sentient life-form on this planet.
Newsgroups: rec.radio.cb
From: gary@ke4zv.uucp (Gary Coffman)
Subject: Re: SWR Tuning and PLL
Reply-To: gary@ke4zv.UUCP (Gary Coffman)
Organization: Gannett Technologies Group
Date: Thu, 24 Dec 1992 22:45:09 GMT

In article <1992Dec22.182438.24017@hpcvaac.cv.hp.com> billn@hpcvaac.cv.hp.com (bill nelson) writes:
>myers@hpfcso.FC.HP.COM (Bob Myers) writes:
>: 
>: As a really trivial aside, note that there is also a current standing wave,
>: a quarter-wave out of phase with its voltage counterpart.  As Gary said, VSWR
>: (or "CSWR", for that matter - same magnitude in either case) is NOT the
>: ratio of reflected to transmitted power, although you CAN figure the reflected
>: power, given the VSWR.  SWR *is*, among other things, the ratio of line to
>: load impedance (or vice-versa, whichever gives a number >= 1).
>
>If  you wish to be precise, this is all true. However, for run-of-the-mill
>CB purposes, it is the ratio of transmitted to reflected power. Why confuse
>people with all the possible types of standing wave, or methods of determining
>the SWR?
>
>The fine distinctions matter, if you are designing an antenna system or a
>matching network for a transmitter. They do not matter at all to Oscar
>Overmodulator - CB operator.

Well education is rarely totally wasted. If one reader learns something,
it's been worth it. One very practical bit of information that can be
gleaned from this exchange is that a matchbox at the transmitter capable
of matching the complex impedance formed by the reflected wave and the
forward wave's vector addition will give nearly fully as effective a signal 
as adjusting an antenna's matching network or length, with only an additional
negligible cable loss, and that doing so won't damage your radio.

Gary
-- 
Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems |    we break it.     | uunet!rsiatl!ke4zv!gary
534 Shannon Way             |    Guaranteed!      | emory!kd4nc!ke4zv!gary      
Lawrenceville, GA 30244     |                     | ke4zv!gary@gatech.edu
Newsgroups: rec.radio.cb