HDTenEightyP/NetNews huggingface dataset:
From: jcraig@kean.ucs.mun.ca
Subject: Re: DSP and The Future
Followup-To: rec.radio.amateur.misc 
Organization: Memorial University. St.John's Nfld, Canada
Date: Fri, 22 Jan 1993 18:00:31 GMT

In article <1993Jan22.155944.22008@magnus.acs.ohio-state.edu>, wvhorn@magnus.acs.ohio-state.edu (William VanHorne) writes:

.
.
.
> My questions for the net: 
> 
> Given the *current* state of DSP technology, why do we need all those reception
> aids?  Why do we need multiple IF stages with filtering?  For that matter,
> why the heck do we even need to continue to use super-het receivers at all?  
> Couldn't we simply go to direct conversion with DSP processed audio?  If we
> can, why are we still paying $2000-$3000 for transceivers with all that
> expensive super-het stuff tacked on?  Why haven't the manufacturers started
> producing cheaper receivers with DSP working on the audio?  What have I 
> missed?  Am I asking too many questions?
> 
> ---Bill VanHorne
>
It's easier to amplify RF at a single frequency than a band of freqs.
This single freq. is the IF in the superhet. 
DSP on the audio will do nothing for spurious mixing products, though. But if
you could DSP the IF then you'd have some receiver!  Better yet,
put a broad band amp between your antenna and a DSP that could sample
at say  100 MHz...  

It's probably only a matter of time before they'll make ultra fast 
DSP's and analogue radio technology will be stashed away with the 
pentagrid converters and coherers!

Joe VO1NA, top band CW junkie.
Xref: sparky rec.radio.amateur.misc:23412 rec.radio.info:72
From: reisert@mast.enet.dec.com (Jim Reisert AD1C)
Newsgroups: rec.radio.amateur.misc,rec.radio.info
Subject: ARRL DX Bulletin #5 - January 22, 1993
Date: Tue, 26 Jan 1993 07:55:10 MST
Followup-To: rec.radio.amateur.misc

ZCZC AE31
QST de W1AW  
DX Bulletin 5  ARLD005
~From ARRL Headquarters  
Newington CT  January 22, 1993
To all radio amateurs   
 
SB DX ARL ARLD005
ARLD005 DX news
 
5BDXCC Start Date Changed
 
The DXCC desk announced today that the start date for 5-Band DXCC 
has been changed from January 1, 1969 to November 15, 1945.  This 
change is effective immediately.
 
ARRL Management made this decision, in consultation with the
Membership Services Committee, in order to simplify the program. 
Now that all DXCC ''band'' awards have the same requirements,
anyone who has a 10, 40 or 80-m DXCC will automatically be
granted credit toward 5BDXCC.  Likewise, a 160, 6 or 2-m DXCC is
sufficient for a band endorsement to 5BDXCC.
 
A change in the start date of CW DXCC is not planned for the
forseeable future.
NNNN

--
Jim Reisert                     Internet:  reisert@mast.enet.dec.com
Digital Equipment Corp.         UUCP:      ...decwrl!mast.enet.dec.com!reisert
146 Main Street	- MLO3-6/C9	Voice:     508-493-5747
Maynard, MA  01754		FAX:       508-493-0395
Xref: sparky rec.radio.amateur.misc:23407 rec.radio.amateur.policy:2180
Organization: Penn State University
Date: Tue, 26 Jan 1993 20:21:37 EST
From: Azmi Hashim <AXH113@psuvm.psu.edu>
Newsgroups: rec.radio.amateur.misc,rec.radio.amateur.policy
Subject: My call sign :(

Hi all,

I passed my element 2 and 3A on Dec 3, 1993. The problem is that I still
dont have a call sign. I am really dissapointed because every day I have
to wait for the mailman to check for my mail from the FCC.

It's said that my call sign is ready within 4-6 weeks.Hmmm, I dont know
what to say. Can anyone out there suggest me something ? or can anyone
help me ?

-Azmi Hashim <axh113@psuvm.psu.edu>
From: cn158@cleveland.Freenet.Edu (John M. Orange)
Newsgroups: rec.radio.amateur.misc
Subject: InstantTrack
Date: 24 Jan 1993 14:11:09 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


Can anyone tell me where I can get ITPATCH2.ZIP to correct the
IT program so it can use NASA element sets instead of AMSAT sets?
Also, does anyone know where on Internet I may find AMSAT 
element sets??
Hey.... Tahnk you, That is Thank you..
de john W3ZDF
-- 
John M. Orange				Alcoa Technical Center
AMCT Division				100 Technical Drive
cn158@cleveland.freenet.edu		Alcoa Center, Pa. 15069
Internet: Orange@Alcoa.Com		(412) 337- 2892
From: derry@NeXTwork.Rose-Hulman.Edu (John Derry)
Newsgroups: rec.radio.amateur.misc
Subject: mfj swr meter info wanted
Date: 22 Jan 1993 18:29:03 GMT
Organization: Computer Science Department at Rose-Hulman
Reply-To: derry@NeXTwork.Rose-Hulman.Edu (John Derry)
NNTP-Posting-Host: eeserver.nextwork.rose-hulman.edu


Does anyone out there have any firsthand info about the MFJ 160-m through  
2-meter swr analyzer with digital freq readout?

Anybody own one and like to tell me ur experiences?

          Please don't send me a post of MFJ bashing.  I
          have some of their products and I'm hip!

One particular question:  Does the vswr meter work "in real time" or do  
you have to set a max then switch to refl to find the swr like on their  
tuners that don't have cross needle meter?

In other words, can you vary the frequency and watch the meter while you  
vary it and see the vswr displayed?

Tnx vy mch in adv fer ani info. (That's cw talk!)

73 de Jack, K9CUN

 
Newsgroups: rec.radio.amateur.misc
From: rdewan@rdewan.kellogg.nwu.edu (Rajiv Dewan, AA9CH)
Subject: Re: I love/hate Wayne Green!
Reply-To: r-dewan@nwu.edu
Organization: Northwestern University, Evanston, Illinois, USA
Date: Thu, 28 Jan 1993 15:16:30 GMT


In article <1993Jan27.204709.5314@nntpd.lkg.dec.com> j_otterson@otters.enet.dec.com (Jeff Otterson/N1KDO) writes:
>
>I think Wayne Green should have been Ross Perot's running mate.  B-)
>
>But seriously, I *do* like 73 mag...
>
I missed the earlier post on WG, so I may be repeating:

What a waste.  Four or five pages of 8 point font with not a picture
or diagram to break the monotony (or should I say monologue.)  Even
with the usual translation of a thousand words per picture, I bet 
his editorial is by far the biggest piece in the magazine.

I still get it because I like the HR articles more than I dislike
paying for his diatribe.

Rajiv 
aa9ch
r-dewan@nwu.edu
Newsgroups: rec.radio.amateur.misc
From: jeffj@seeker.mystic.com (Jeff Jones)
Subject: HAM RADIO CLASSES!
Organization: Mystic Software Pittsburg, Ca
Distribution: BA
Date: Sat, 23 Jan 1993 17:19:58 GMT

Ham Radio Classes are starting on Feb. 2 at the old Pleasant Hill High
School Campus. Classes will start at 7:00pm and run for 11 weeks. Morse
code and theory will taught for the Novice and Technician licenses. The
cost is $5.00 payable to the Mt. Diablo Adult Education. On the last day
of class testing will be done by Salano VE's. For more information call
Jeff Jones 510-439-2514.
-- 
 Jeff Jones  AB6MB         | Prediction is very difficult, 
 UUCP   uunet!seeker!jeffj | especially about the future.
 Infolinc BBS 510-778-5929 |          Storm Petersen
From: alanb@hpnmdla.sr.hp.com (Alan Bloom)
Date: Fri, 22 Jan 1993 20:30:25 GMT
Subject: Re: DESPERATELY SEEKING AIR VARIABLE CAPACITORS
Organization: Hewlett-Packard, Santa Rosa, CA
Newsgroups: rec.radio.amateur.misc

In rec.radio.amateur.misc, stickler@klaava.Helsinki.FI (Patric M Stickler) writes:

>I am trying to locate some surplus air variable capacitors for use in a
>transmatch. They only have to be able to handle around 150 watts, and can be
>of any age/make as long as they are functional/reliable.

>I need one (1) 200pF and one (1) dual 200pF capacitor.

If you can find an old tube-type AM radio, you can cannibalize the 
tuning capacitor from it.  Generally there are two sections:  the 
antenna tuning section is about 360-400 pF and the local oscillator
section about 200 pF.  The plate spacing should be fine for 150 watts.
For the dual capacitor, you can remove plates from the rotor of the
oscillator section to get down to 200 pF.

AL N1AL

Newsgroups: rec.radio.amateur.misc
From: julian@bongo.tele.com (Julian Macassey)
Subject: Re: HTs at Disneyland
Organization: The hole in the wall. Hollywood
Date: Thu, 21 Jan 1993 15:07:14 GMT

In article <1jknelINNprk@mthvax.cs.miami.edu> bsherman@mthvax.cs.miami.edu (Bob Sherman) writes:
>In <HIDEG.93Jan19185621@spsd630a.erim.org> hideg@spsd630a.erim.org (Steve Hideg) writes:
>>In article <C140I7.65L@panix.com> oppedahl@panix.com (Carl Oppedahl) writes:
>>>Anybody have similar information on Disney World?
>>>(In Florida)
>>I went there about 3 years ago. The one time I tried to bring my HT in, the
>>moron at the gate *yelled* at me that I cannot bring a radio into the park.
>
>I wonder what he says to the Secret Service when they bring their radios
>while their protectees visit the park??? 

	
	At last someone brought up the umentionable. There are rules
for the hoi-polloi and no rules for the rulemakers.

	This all became clear to me many years ago when Henry
Kissinger visited Copenhagen, Denmark. I suppose you could say it was
an epiphany.

	First Air Force One flew in, then two monster transport
planes. Out of the monster planes came some limos which drove up to
Air Force One. 

	So driving all over Copnhagen we had U.S. Registered Cars
filled with armed Secret Service thugs chatting away on their radios.

	Lemme see, do they have Insurance for the cars? Do they have
registrations? Firearms certs for the guns? And have they talked to
the Post and Telegraph re the radios and frequencies etc?

	I checked with the Post and Telegraph. No one asked them if
they could use radios. But who was going to complain. When important
people want to do stuff, they just do it. They also make laws telling
us what baud rate we can use on certain bands. 

	Having seen something as blatant as the Kissinger circus, 
I now giggle when someone queries a modulation method because it is 
not specifically allowed in the regs. 

	So why do so many people here agonise about whether writing
down the dots and dashes in an exam is allowable? Why are we so
concerned about who has squatters rights to a repeater? Do you think
Henry Kissinger's minders give a hoot as they chatter on a repeter
frequecy when they rumble into town?

	I think we should do a Kissinger. Look at the big picture.
Let's examine the charter of amateur radio. Let's do radio first and
if the Feds squawk, we can deal with them. Do you seriously think they
have nothing better to do than examine our minutae?

	
-- 
Julian Macassey at bongo. julian@bongo.tele.com Voice: (213) 653-4495
Paper Mail: 742 1/2 North Hayworth Avenue, Hollywood, California 90046-7142
From: randolph@est.enet.dec.com (Tom Randolph)
Newsgroups: rec.radio.amateur.misc
Subject: illegals (was: Re: Radio Shack Business Band Radio)
Date: 21 Jan 93 21:27:57 GMT
Organization: Digital Equipment Corporation


In article <1993Jan20.125802.2749@vax1.mankato.msus.edu>, dj1@vax1.mankato.msus.edu writes...
>>
>Here is a RS flame but when I was in there the guy said:
>"No problem, just use it no liscense required!"

Yah, this brings up something I've been wondering about. What are we, as hams,
to do when something like this occurs?

For instance, here in Massachusetts there is a local for sale/wanted magazine,
one of the catagories of which is "radios and electronics". I very often see
ads in there like:        Acme 40 channel CB, modified for 100 channels and
                          increased power. Call Joe 123-4567

I'm extremely tempted to tear out the page, apply a highlighter, and forward it
to the FCC. Comments, anyone?

-Tom R.   randolph@est.enet.dec.com
Newsgroups: rec.radio.amateur.misc
From: miles@ms.uky.edu (Stephen D. Grant)
Subject: Re: HTs at Disneyland
Organization: University of Kentucky, USA. -5 GMT
Date: Thu, 21 Jan 1993 23:26:46 GMT


This reminds me of a quote by Henry Kessinger:

  "The illegal we do immediately, the unconstitutional takes longer."

Kind of sums up the attitude of those in power in our government. IMHO.

Newsgroups: rec.radio.amateur.misc
From: zardoz@hfglobe.intel.com (Jim Garver)
Subject: Re: running 300-ohm twinlead thru wood
Organization: Intel Corporation
Date: Fri, 22 Jan 1993 16:37:14 GMT

I have used 450 ohm plastic feedline with dipoles, veebeams, and end-fed
zepps for years.  I just open my double-hung wood frame window sash,
shove the feedline through, and slam the window shut.  I've run up to
700 watts into a Johnson Matchbox Jr. feeding this stuff with no arcing.
Some RF in the shack however.  Worst match is running 40 meters on a
full size 80 meter dipole where tuning is tricky and a parallel tuner
like the Matchbox doesn't quite cut it.  But I've never had any arcing
with dry wood or painted areas.  

WA7LDV

Newsgroups: rec.radio.amateur.misc
From: rtaylor@ux1.cso.uiuc.edu (Roger Taylor)
Subject: Re: Log-Yagis
Organization: University of Illinois at Urbana
Date: Mon, 25 Jan 1993 15:16:58 GMT

alanb@hpnmdla.sr.hp.com (Alan Bloom) writes:

>In rec.radio.amateur.misc, edgar@tid.ES (Eduardo Garcia Lopez) writes:


>>In the Radio Handbook (Willian I. Orr, 20th Edition), a PL Yagi for 50 MHz is
>>described. It is reported that this antenna combines the bandwith of a log-pe
>>riodic antenna and the gain of a Yagi in a notably shorter boom. It is compo
>>sed of an active log-periodic part and some parasitic directors.

>In a true log-periodic, only a few of the elements are active on any 
>given frequency.  An LP is much bigger for a given gain than a Yagi -- you
>trade off size for bandwidth.

	If I may be permitted an expansion of the above.  The basic concept
	behind the log periodic is to "match" the impedance of the feedline
	to the "ether" (you have to be over 50) over a very wide (theoretically
	infinite) bandwidth.  It's an attempt at perfect coupling.  If fact,
	all elements are carrying current and helping to "couple" the signal
	to space.  However, on a practical level, the forward gain amounts
	to that of a 3 element beam in most designs.  If you put more 
	elements near that of the desired frequency, then you get more
	gain.  You don't get something for nothing.  To get more gain
	at a given frequency, you add more elements tuned near that 
	frequency.  To get more bandwidth, you add more elements near
	other frequencies.  For a given gain, over a broader bandwidth
	you will have a longer and heavier antenna with a lot more 
	elements with a log periodic, but they sure are nice. -K9ALD

Newsgroups: rec.radio.amateur.misc
From: dana@atlas.la.locus.com (Dana H. Myers)
Subject: Re: Retuning Commercial Gear
Organization: Locus Computing Corporation, Los Angeles, California
Date: Thu, 28 Jan 93 15:42:56 GMT

In article <8937@orbit.cts.com> rambler@pnet51.orb.mn.org (Dan Meyer) writes:
>mark@ERA.COM (Mark Feit) writes:
>>Has anyone seen books (doubtful) or files in an archive (more
>>probable) on using commercial gear in the ham bands?
>>
>>Lately I've been toying with the idea of finding some old commercial
>>gear to retune and use on the 2m and 70cm bands.  Mostly I'm looking
>>for handhelds and low-power mobiles (10-20 watts) to have around the
>>house and in the office.  Bells and whistles aren't necessary; just
>>something with two or four channels that can be set up to use on
>>repeaters or for simplex if necessary.  PL encode/decode would be
>>nice, but isn't a must.
>>

   Most commercial mobile radios use helical resonators in the front
end, and the resonsators have a limited tuning range.  For example,
Micors come in 138-150 and 150-174 Mhz variants.  You'd prefer the
138-150 Mhz "split".  I've sucessfully tuned a 150-174 MHz GE Custom
MVP down to 145 Mhz, but it was close.  I know folks that have moved
450-470 Mhz mobiles down to 440 Mhz, too.

  Some mobile radios have highly tuned circuits at the transmitter
output, such as a mobile duplexer or isolator.  These can make retuning
a radio difficult.  Your common swap-meet radio will probably not have
these items.

>
>My wife and I use some regency UHF synthesized mobile rigs in our cars.
>
>I had no trouble at all retuning them for use in the 440 repeater band.
>
>the sensitvity is a little less than a "real" ham rig, but they do 
>meet regency specs. ( .5uV for 10 db sinad ). they do have a 20 
>watt power output, 10 channels, and work just like they disigned to work.

  "real" ham rigs usually favor sensitivity over intermodulation and
desense rejection.  Most commercial radios have 4 or 5 sections of
helical resonator before the mixer/RF amp.  They're very hard to
desense with in-band signals, and nearly impossible to desense with
out-band signals.  True, they are a little less sensitive, but if you
live in an RF dense area, they work better.  If you live in an
RF sparse area, use a GaAsFEt pre-amp.


-- 
 * Dana H. Myers KK6JQ 		| Views expressed here are	*
 * (310) 337-5136 		| mine and do not necessarily	*
 * dana@locus.com  DoD #466 	| reflect those of my employer	*
 * This Extra supports the abolition of the 13 and 20 WPM tests *
Newsgroups: rec.radio.amateur.misc
From: markm@bigfoot.sps.mot.com (Mark Monninger)
Subject: Advice on coax cable sources and prices?
Reply-To: rapw20@email.sps.mot.com
Organization: SPS
Distribution: usa
Date: Tue, 26 Jan 1993 19:39:07 GMT

Greetings all...

Several members of our club have decided to go together and purchase a  
quantity of coax cable. We're looking for around 1000' of Belden 9913.  
Does anyone out in net-land have any advice on good sources for that  
quantity? So far. the best I've found is AES at about $.46 per foot +  
shipping for 500' spools. HRO price is $.69 per foot + sales tax but I  
haven't persued a quantity price from them. Other are around $.50 per foot  
+ shipping. Are these decent prices or can 9913 be had for less elsewhere?

Any advice will be appreciated.

Thanks & 73...   Mark   AA7TA
From: boyd@afsp.b30.INgr.COM (stan boyd)
Newsgroups: rec.radio.amateur.misc
Subject: Spark Plug Wires
Date: 23 Jan 93 16:47:07 GMT
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu
Originator: daemon@ucsd.edu

It's about time for a tune up on a Chevy Pickup.  Any recommendations on spark
plug wires that suppress noise?  I know there are many brands that say they
are "suppressor" wires, but has anyone had any better or worse success with
one brand over another??

Thanks in advance.

Stan, KC4ZGF
 _______________________________________
|  Stanley D. Boyd                      |
|  Project Manager-CALS Applications    |
|  Systems Integration		        |
|  Intergraph Corporation               |
|  Mail Stop  GD3005                    |
|  Huntsville, AL 35894-0001            |
|  Phone: (205)730-3135                 |
|  FAX:   (205)730-3301                 |
|  INTERNET: boyd@afsp.b30.ingr.com     |
|_______________________________________|
From: gwalsh@kilroy.Jpl.Nasa.Gov (Gerald J. Walsh)
Newsgroups: rec.radio.amateur.misc
Subject: TH-78A : Do the mods differ?
Date: 26 Jan 1993 04:42:52 GMT
Organization: Jet Propulsion Laboratory, Pasadena, CA
Distribution: world
NNTP-Posting-Host: kilroy.jpl.nasa.gov


I have a friend who just purchased a TH-78A and tried the mods that, by
now, we all have a copy of.  He says that his radio has two green wires
near the diodes that are, "just asking to be cut"!  From the experimenting
that he has done, cutting one wire is equivalent to removing D5 and
cutting the other green wire is equivalent to cutting D6.

With the "CAP/Mars mod" completed (remove D6 or cut the green wire)
he does get the expanded RX range, but he gets no TX capability outside
the amateur band.

Alternatively,

With the "Beyond MARS mod" completed (remove D5 or cut the other green wire)
he gets the full RX capability and the extended TX capability for the
CAP/Mars mod, not the full TX capability expected!?

BOTTOM LINE:

Is anyone aware of a change in the mods for later versions of the TH-78A?
We are not able to fully expand the TX capability of this TH-78A.  We
compared (by voice) the mods we made with another ham who modified his.
We did everything properly....

Thanks for your help!


Gerald J. Walsh - KB6OOC            | Internet: gwalsh@kilroy.Jpl.Nasa.Gov
Jet Propulsion Laboratory           | Packet  : KB6OOC@W6VIO.#SOCA.CA.USA.NA
RF and Microwave Subsystems Section | Phone   : (818) 354-3913
M/S 238-528                         | Fax     : (818) 354-2825
4800 Oak Grove Drive                | 
Pasadena, CA  91109                 |
From: jmeyers@ecst.csuchico.edu (Jeff Meyers)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Case needed for HTX-202
Date: 22 Jan 93 00:21:27 GMT
Organization: California State University, Chico
NNTP-Posting-Host: psycho.ecst.csuchico.edu

In article <1993Jan21.174103.27963@usafa.af.mil> mccormac@pooh.usafa.af.mil writes:
>  One of the guys I work with got a Radio Shack HT to go along with his license
>for Christmas.  The only real drawback is the lack of a protective case. 

Only a recommendation: do not buy the Radio Shack case made for the HTX-202!
It is a special order item through CMC and it sucks!  It is a cheap vinyl
and plastic thing with huge seams stitched up the sides...  and no top-
the radio just slides in.

-- 
============================================================================
| Jeff Meyers      |  jmeyers@ecst.csuchico.edu      | 39x43'N  121x48'W   |
| Chico, Ca 95926  |  KD6DIS@KE6LW.#NOCAL.CA.USA.NA  | Grid: CN80-CM99 ??  |
============================================================================
Newsgroups: rec.radio.amateur.misc
From: ee_hflo@uxmail.ust.hk (Michael Lo Ho Fung)
Subject: Re: ?? TH78 or C558 ???
Organization: Hong Kong University of Science and Technology
X-Newsreader: TIN [version 1.1 PL8]
Date: Sat, 23 Jan 1993 07:45:35 GMT

Harald Landvoigt (K3006E1@ALIJKU11.BITNET) wrote:
: hi everybody,
: i will buy a new duo-band-ht in the next few weeks, but i dont know
: which one to take !!!.....
: so it would be nice if you could answer my questions........
: here they are:
:     1) how is the rx-sensivity of the th78 on the 118-174,300-400,400-500,
:        850-950 MHz bands ???

:     2) the rx-frequ.range of the C558 an the sensivity????
:     3) is it possible to rx two frequ. on the same band with the C558
:        (like the VHF+VHF , UHF-UHF function of the th78)???

: ok thats all by now
: thanx and 73 de harald, oe5len


	I have same problem, if you recevie any reply please forward to me


----------------------------------------------------------------------------
|  Lo Ho Fung Michael  Comp 'N'        |   == Internet e-mail address ==   |
|  Department of                       | University  : ee_hflo@stu.ust.hk  | 
|  Electrical & Electronic Engineering |             : mlo@nyx.cs.du.edu   |
|  The Hong Kong University            |             : michaelo@gnct.com   | 
|  of Science & Technology             | Radio Call Sign : VR2YJR          |
----------------------------------------------------------------------------
From: wagner@mala.bc.ca
Newsgroups: rec.radio.amateur.misc
Subject: Manual needed for Edistone EC-10
Date: 26 Jan 93 16:00:25 -0700
Organization: Malaspina College

Looking for a manual for Edistone, EC-10 (mark II).

Any help would be appreciated.  If copies are unavailable I can copy and return
the manual.-- 
73, Tom
================================================================================
Tom Wagner, Audio Visual Technician.  Malaspina College Nanaimo British Columbia
(604) 753-3245, Local 2226  Fax (604) 755-8742  Callsign VE7GDA

I do not recyle.....   I keep everything!       (All standard disclaimers apply)
================================================================================
Xref: sparky rec.radio.amateur.misc:23461 rec.radio.shortwave:9935