QRZ! Ham Radio 5/QRZ Ham Radio Callsign Database - Volume 5.iso/digests/infoham/940074.txt

Internet Message Format | 1994-11-13 | 27.9 KB

Date: Tue, 25 Jan 94 12:43:11 PST
From: Info-Hams Mailing List and Newsgroup <[e-mail]>
Errors-To: [e-mail]
Reply-To: [e-mail]
Precedence: Bulk
Subject: Info-Hams Digest V94 #74
To: Info-Hams


Info-Hams Digest            Tue, 25 Jan 94       Volume 94 : Issue   74

Today's Topics:
                  Anyone know of a callsign server?
                         CW filters and DSP-9
                             Famous hams
                     Ham Radio and More talkshow
                    how can I find Kiss definition
                            Low Power VCO
                 MFJ's 20m SSB Travel Radio: No RIT?!
                             NEWS ARCHIVE
                      Ohio/Penn DX Bulletin #144
                      OPDX/NODXA 1993 DX Survey
                   RFD: talk.politics.rush-limbaugh
                          ThickLAN Ethernet
                         Where is FAQ on EMF?
                       Yeasu FT416 mods wanted

Send Replies or notes for publication to: <[e-mail]>
Send subscription requests to: <[e-mail]>
Problems you can't solve otherwise to [e-mail].

Archives of past issues of the Info-Hams Digest are available
(by FTP only) from UCSD.Edu in directory "mailarchives/info-hams".

We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party.  Your mileage may vary.  So there.
----------------------------------------------------------------------

Date: Thu, 20 Jan 1994 17:12:56 GMT
From: utcsri!newsflash.concordia.ca!sifon!clouso.crim.ca!hobbit.ireq.hydro.qc.ca!barde![e-mail]
Subject: Anyone know of a callsign server?
To: [e-mail]

In article [e-mail], [e-mail] (Willie Smith) writes:
>[e-mail] (Shannon O. Sullivan) writes:
>>    telnet callsign.cs.buffalo.edu port 2000
>
>Someone also mentioned port 3000, and 'callsign' used to be 'marvin',
>but none of the above work any more.  Did the internet callbook go
>away, move somewhere else, or is our net connection broken?  All I get
>is 'unknown host' errors.
>
>--
>Willie Smith    [e-mail]        [e-mail]
>Some people you don't have to satirize, you just quote em - Tom Paxton


I did:
    telnet callsign.cs.buffalo.edu 2000
yesterday without any problem.

The machine: callsign.cs.buffalo.edu real name is:
        electra.cs.buffalo.edu   (128.205.32.2)

Clem.
73
---
   Clement Vaillancourt,             |    Institut de Recherche d'Hydro-Quebec
   Analyste,                         |    Varennes, P. Quebec, Canada, J3X 1S1
   Informatique scientifique         | Tel:[phone] Fax:[phone]
   [e-mail]          |  Radio-amateur: [e-mail]

------------------------------

Date: 24 Jan 94 20:36:44 GMT
From: sdd.hp.com!col.hp.com!srgenprp![e-mail]
Subject: CW filters and DSP-9
To: [e-mail]

Clark Savage Turner ([e-mail]) wrote:

: Reference number 2, some filters don't do so well at this, and some narrow
: filters have a "ring", or hollow sound to them.  Many don't like this at
: all.  Most IF filters don't have much ring, though some, many audio filters
: (except DSP I understand) can ring pretty badly.

Even analog filters can be designed for low ringing.  The problem is that
most crystal IF filters, and some audio analog filters, are designed for a
"flat-top" response, which tends to aggravate the ringing problem.

DSP/digital bandpass filters have ringing as well, although it is easier
to control than with analog filters.  You should be able to do 100 Hz or
so bandwidth using either analog or digital techniques with negligible
audible ringing.  Any narrower than that, and you will be limited by the
stability and tuning rate of the HF transceiver anyway.

AL N1AL

------------------------------

Date: Tue, 25 Jan 1994 12:43:39 GMT
From: agate!howland.reston.ans.net!usc!elroy.jpl.nasa.gov!newncar!uchinews!att-out!cbnewsj![e-mail]
Subject: Famous hams
To: [e-mail]



------------------------------

Date: 25 Jan 94 18:33:49 GMT
From: [e-mail]
Subject: Ham Radio and More talkshow
To: [e-mail]

My local Talk America Radio Network affiliate (1510 in the Boston area) didn't
run "Ham Radio and More" this past Sunday evening. Did anyone in a different
part of the country hear the show, or was it QRT nationally?

--
Scott Ginsburg            Voice: 508-436-3836                  | too much DX,
Wellfleet Communications  Internet: [e-mail]     | too little
2 Federal St.             Amateur Radio: WA2CJT                | time...
Billerica, MA 01821

------------------------------

Date: Tue, 25 Jan 1994 18:01:28 GMT
From: agate!howland.reston.ans.net!pipex!zaphod.crihan.fr!jussieu.fr!univ-lyon1.fr!ghost.dsi.unimi.it!dm.unibo.it![e-mail]
Subject: how can I find Kiss definition
To: [e-mail]

I'm intrested to know kiss protocol definition
If you can help me
Please  mail
[e-mail]

------------------------------

Date: Sat, 22 Jan 1994 05:25:53 GMT
From: ftpbox!mothost!pts-nntp!davebmac.pts.mot.com![e-mail]
Subject: Low Power VCO
To: [e-mail]

In article <2hp6ct$[e-mail]>, [e-mail] (Richard
Karlquist) wrote:
>
> In article <2hk0r2$[e-mail]>,
> Johan D. H. Goedkoop <[e-mail]> wrote:
> >
> >
> >    Frequency Range: 138-153 MHz
> >    Power Supply:    3 Vdc @ 3 mAmp or
> >             5 Vdc @ 1-2 mAmp
> >    Output (Power):     +8 - +10 dBM (50 Ohm Load Resistance)
> >    Control Voltage: 1 - 3 Volts
> >    Op. Temp. Range: -45 to +70 degrees Celcius
> >
> >
>
> You'll have to build your own using an MRF931 transistor and an MV1404 tuning
> diode.  I'd pick the 5 volt supply over the 3 volt supply.  Allow a day or two
> of design time.
>
>
> Rick Karlquist N6RK
> [e-mail]

Any Particular reason you picked the MRF-931? We've been using MRF941's in
even lower power applications, and getting what we consider good results.
Sorry, no spec's off the top of  my head.


David Bengtson                               All Standard Disclaimers apply
Motorola Paging and Wireless Data Group      Sorry, no witty quote.
MS 98
1500 NW 22nd Ave
Boynton Beach, FL 33467

------------------------------

Date: 25 Jan 1994 16:06:07 GMT
From: pacbell.com!well!nigel.msen.com!spool.mu.edu!howland.reston.ans.net!sol.ctr.columbia.edu!news.cs.columbia.edu!mix-cs![e-mail]
Subject: MFJ's 20m SSB Travel Radio: No RIT?!
To: [e-mail]

[e-mail] (Greg Bullough) writes:

> In article <2i0ra6$[e-mail]> [e-mail] (Andrew M. Cohn) writes:
> >
> >But, where's the RIT?? How can you work SSB/CW without an RIT?
>
> Learn how to tune?

Yeah, why do you need RIT anyway?  I'm serious, when I work HF it's
just another useless knob on the rig.  Maybe I'm dense, but I've never
managed to figure out what it's for.  I hardly ever touch it.  If the
station you want to contact is operating normally, you just zero-beat
him and that's it.  The only time I can think it might be useful is if
you want to contact a DX station who is operating on split
transmit/receive frequencies, but then they're usually too far apart
(anywhere from 3 KHz to a couple of hundred KHz) for the average +/- 2
1/2 KHz RIT control to do any d--n good.  Maybe it would be good for
switching in and out to tune in the one oddball in every net who can't
be bothered to get any closer than somewhere in the general ballpark
of the net frequency, but that's about all I can imagine.  What do you
use this knob for?
    -Steve, WB3I

------------------------------

Date: 20 Jan 1994 17:41:33 GMT
From: mvb.saic.com!unogate!news.service.uci.edu!usc!cs.utexas.edu!howland.reston.ans.net!usenet.ins.cwru.edu!eff!news.umbc.edu!haven.umd.edu!umd5.umd.edu!w3eax.umd.edu![e-mail]
Subject: NEWS ARCHIVE
To: [e-mail]

Hello. Where can I find the archive of postings made to this
news group? Thanks.

[e-mail]

------------------------------

Date: Sun, 23 Jan 1994 14:50:20 -0700
From: ucsnews!sol.ctr.columbia.edu!destroyer!nntp.cs.ubc.ca!alberta!adec23!ve6mgs![e-mail]
Subject: Ohio/Penn DX Bulletin #144
To: [e-mail]

SB DX @ ALLBBS $OPDX.144
Ohio/Penn DX Bulletin No. 144

The Ohio/Penn Dx PacketCluster
DX Bulletin No. 144
BID: $OPDX.144
January 24, 1994
Editor Tedd Mirgliotta, KB8NW
Provided by BARF-80 BBS Cleveland, Ohio
Online at 216-237-8208 14400/9600/2400/1200/300 8/N/1

Thanks to the Northern Ohio Amateur Radio Society, Northern Ohio DX
Association, Ohio/Penn PacketCluster Network, DL7VEE & DXNL, DF4RD,
CT1XX, IW2IYN, AD1C, KC1AG, NA2M, WA2ABN, N2PNG, K4CEF & Southeastern
Cluster Group, ON6TT, N4VZ, N8BQJ, K8YSE and NE8Z for the following DX
information.

3Y0PI, PETER I ISLAND DXPEDITION. As the countdown continues for the
start of this DXpedition, here is some important information: KA6V and
AA6BB, are the QSL Managers and they ask that you put "ALL" your cards
into the same envelope or put all your QSO labels into one card. "DO NOT"
(repeat DO NOT) mix VP8BZL and VP8BZL/MM cards with the 3Y0PI cards (send
them separately). Mixing operations in the same envelope will cause a
delay in processing your QSL cards. Include a SASE or SAE and enough to
cover at least the return postage. The 3Y QSLs will be printed in Belgium
and have the same layout as the AH1A and VP8SS I cards (folding type with
colored pictures). There is room for 5 QSO's per 3Y-card. If you have
more than 5 QSOs, more cards will be needed, and the cost of postage
will increase (So, remember send enough to cover this!). Next week we
will have more on operating frequencies and practices.

EU/EV/EW, BELARUS (NOT YET!). Bob, N4VZ, had a chat with Yuri, RC2AR,
and Yuri states that Belarus will not be using its EU, EV, or EW assigned
prefixes until June 1, 1994. This is surprising since most other countries
have made the changeover to their new prefixes and this will add more
confusion since Russia uses the "R" prefix.

FO, FRENCH POLYNESIA. Walter, DJ0FX, will be active on CW/SSB through
February 19 as FO0PT. He will be using 100 watts into a vertical
antenna. Activity should be on all bands including the WARC bands.

GD, ISLE OF MAN. Several stations have been active on the WARC bands and
the lower bands. GD4WBY has been heard on 12 and 17 meters between 1400
and 1630z. GD4PTV has been heard on 80 meters at 0800z and GD4BEG on 160
meters between 0630 and 0730z. Steve, G4UOL, will be active until the
6th of February as GD4UOL. His activity will be mainly on CW (11 kHz up
or on 3507, 10102, 18070 and 24900). QSL via the bureau or CBA.

HK0/I2RAO INFORMATION. Marco, IW2IYN, reports that the "Italian DX
Bulletin" states, "operations by I2RAO from Gorgola Island is considered
as Colombia for DXCC, and the previous from Malpelo should really count
as Malpelo".

PJ2, NETHERLANDS ANTILLES. Seppo, OH1VR, will be active from Curacao as
PJ2/OH1VR from January 26 through February 2nd. Seppo is a contester and
it is likely that he will be active in the CQ WW 160 Meter CW Contest
next weekend.

S2, BANGLADESH. Eric, S21ZG, has been active almost daily on 80 meters
(3651-3653 kHz) at 1145-1215z and again around 0000z.

V2, ANTIGUA. John, AA2LW, will be traveling to V2-land the last week of
Jaunary. He will be there through the first part of February (around 10
days). John is actually there on business, but in his spare time he plans
to be active on 40-10 meters SSB (his favorite band is 17 meters). QSL
to CBA.

V4, ST. CHRISTOPHER/NEVIS. Mike, W9NSZ, will be active as V47NS from
January 28th thru February 2nd. QSL to CBA.

VP2, ANGUILLA. Jim/KK3K, Don/WB6LYI, Mark/KC6XC, Tom/KI4ZN, Howard/W9BVD,
Norm/KF7IK, James/AF9A and Wayne/AI9Q (members of the Lambda Amateur
Radio Club, LARC) will be active from March 5-10. They plan to be active
on multi-band and multi-mode HF, and OSCAR-13 Mode B and Mode S. They
claim this may be the first OSCAR-13 Mode S DXpedition.  QSL for all
operators is direct to their CBA.

VP5, TURKS & CAICOS ISLANDS. Tom/K2TD, John/N2VW and Mike/WB2YOF will
be active now through part of February. The group will be using /VP5
and their own callsigns. No details of their activities were reported,
but listen for instructions on where to QSL.

VP8, ANTARCTICA. Brian, VP8CFM, has been assigned as Base Commander at
the British Antarctic Survey Base. He will be there for 14 months and
will be active as either VP8HAL or his own call VP8CFM. QSL via GM4KLO.

VR6BB/VR6JJ DXPEDITION SUMMARY. Here is information about this operation's
QSO totals. They made 35025 QSOs (VR6BB - 23311 / VR6JJ - 11714). Here is
just a few of their totals by bands: 683 QSOs on 160 meters, 1291 QSOs on
80 meters, 23 QSOs on 75 meters, 2698 QSOs on 40 meters and 538 QSOs on
6 meters.

XE/XF1, MEXICO. Rick, NE8Z, will be operating from Puerto Vallarta,
Mexico, as XE1/NI8Z from February 13-20. Activities will be on 160-10
meters (including the WARC bands) and the ARRL CW DX Contest. Frequencies:
CW - 5 and 25 kHz up from band edge / SSB - Various. SPECIAL IOTA NOTE:
Rick is planning to be active from Islas Marietas (NA-189) and Islas Los
Arcos Mismaloya (IOTA unknown). Specific dates are unknown at this time,
but activity will be on CW (21005 and 14005 kHz) and SSB (21260 and 14260
kHz). Rick also mentions that he is required to take along a local
Mexican amateur to these islands. His goal is to spend time on the WARC
bands and 80/40 meters. QSL via K8LJG.

ZS0, PENGUIN ISLANDS. This may possibly be the last ZS0 operation. Ian,
ZS9A, reports that Baldur, DJ6SI, is attempting to mount a trip to the
Penguin Islands sometime around Feb 24th. The RSA will turn over both
Walvis Bay and the Penguin Islands to Namibia at the end of February.
No other further details are available at this time.

DAYTON DX DINNER ANNOUNCEMENT. The Southwest Ohio DX Association is
pleased to announce the Ninth Annual DX Dinner which will be held on
Friday, April 29th, 1994, at the Stouffer Center Plaza Hotel. There will
be a cash bar at 6:30 with dinner at 7:15. Tickets must be purchased in
advance, and are available from Scott Lehman, N9AG, PO Box 803,
Greenville OH 45331. Tickets will be $27.00. Please make your check
payable to SWODXA, and send an SASE for ticket return. Seating will be
limited, so please order early. If you wish to sit as a group, it would
be appreciated if you order as a group. All seats will be reserved. For
further information, contact Scott Lehman, N9AG, at [phone] or
Steve Bolia, N8BJQ,  at [phone] voice/fax.

KEEP THOSE BALLOTS COMING! (Only a 1 weeks to go!) Ballots for the Third
Annual OPDX/NODXA DX Survey can be found in OPDX.137. Ballots can be
sent to the following packet and online addresses listed below.

FAX YOUR DX INFORMATION NOW! Faxing is available Monday/Wednesday/Friday
from 0430 to 2330z only. The number is 216-237-8208 and the FAX card is
sharing the same phone line as BARF-80 BBS using a data/fax/phone switch.

Excerpts and distribution of The OPDX Bulletin are granted as long as
OPDX/BARF80 receive credit. To contribute DX info, call BARF-80 BBS
online at 216-237-8208 14400/9600/2400/1200/300 and leave a message with
the Sysop or send InterNet Mail to: [e-mail] or send
BitNet Mail to: aq474%cleveland.freenet@cunyvm or send PRODIGY Mail to:
DFJH48A or send a message via packet to KB8NW @ WA8BXN.OH.USA.NA
/EX

------------------------------

Date: Sun, 23 Jan 1994 15:21:52 -0700
From: ucsnews!sol.ctr.columbia.edu!howland.reston.ans.net!cs.utexas.edu!math.ohio-state.edu!cyber2.cyberstore.ca!nntp.cs.ubc.ca!alberta!adec23!ve6mgs![e-mail]
Subject: OPDX/NODXA 1993 DX Survey
To: [e-mail]

SB ALL @ ALLBBS $OPDXNODXA.5
OPDX/NODXA 1993 DX Survey

THE THIRD ANNUAL OPDX/NODXA DX SURVEY.
Here is your chance to be counted. Deadline will be January 31, 1994,
with results in February. The questions of the survey will deal with:

1) The DXer of the year. This is a DXer who you thought was outstanding
   in operating and handling the pile-ups from their DXpedition.
2) DXpedition of the Year (Group and Indivdual). Choose the best and most
   well organized DXpedition that met the needs of the DX community.
3) The 30 Most Wanted Countries. Choose your 30 most wanted countries.
4) OPTION: Your personal comments about DXing in 1993.

Please use the ballot below. Votes will only be accepted in the
following format below.

____________________________________________________________________
 Your    | DXer of the Year| DXpedition of the| DXpedition of the
Callsign |    (Person)     | Year by a person | Year by a group
and QTH  |                 |                  |
____________________________________________________________________
CHOOSE YOUR MOST WANTED COUNTRIES. (Please list only 30 of your most
wanted countries. List CW and SSB modes separately.
CW  - AB,CD,EF
SSB - GH,IJ
---------------------------------------------------------------------
Comments on DXing in 1993: (Text Any Length)
_____________________________________________________________________

* Just Fill-in The Blanks And Send It To One Of The Three Address:
    "Packet Radio"  - KB8NW @ WA8BXN.OH.USA.NA
    "InterNet"      - [e-mail]
    "PRODIGY"       - DFJH48A

OPDX/NODXA DX Survey

Example Ballot:
____________________________________________________________________
         |                 |              |
         |                 |              |
____________________________________________________________________
CHOOSE YOUR MOST WANTED COUNTRIES. (Please list only 30 of your most
wanted countries. List CW and SSB modes separately.
CW  -
SSB -
---------------------------------------------------------------------
Comments: (Text Any Length)
I think DXing in 1993 was..........
_____________________________________________________________________
/EX

------------------------------

Date: 25 Jan 1994 06:06:17 GMT
From: agate!howland.reston.ans.net!usenet.ins.cwru.edu!nigel.msen.com!yale.edu!noc.near.net!das-news.harvard.edu!husc-news.harvard.edu!husc.harvard.edu!husc8.harvard.edu![e-mail]
Subject: RFD: talk.politics.rush-limbaugh
To: [e-mail]

================================
RFD: talk.politics.rush-limbaugh
================================

This is a formal request of discussion for the creation of a Rush
Limbaugh-related newsgroup.  Please direct all followups to news.groups.

PRPOSED CHARTER:

The unmoderated group talk.politics.rush-limbaugh will serve as a forum
for the discussion of issues raised by Rush Limbaugh's radio show, TV
show, books, newsletters, and other media.  It will also act as a place
for Rush listeners to talk about Rush fandom such as the opening of new
Rush Rooms in various cities, methods of obtaining tickets to Rush's TV
show, Rush's appearances in public and on other TV shows, and so on.
This function, however, is likely to be secondary to the group's primary
mission of hashing out the issues of the day, and hence the group shall
be part of the talk.politics.* hierarchy.

It is *essential* to note that posters of *all* ideological stripes will
be welcome on talk.politics.rush-limbaugh.  Articles critical of Rush are
to be afforded the same respect as articles in support of Rush.  It is
hoped that the creation of the new group will inspire intelligent
political discussion by using Rush's thoughts as a springboard.

BACKGROUND AND RATIONALE:

On the newsgroup alt.fan.rush-limbaugh, we have been discussing the
possibility of formally incorporating the group into the talk.politics.*
or rec.arts.* hierarchy for some time now.  The former was chosen largely
because political, as opposed to fandom, discussions dominate the group
now.  Several people, myself among them, have argued that a rec.arts.*
placement would be better because Rush usually insists he is an entertainer
first and a pundit second.  However, support for a
talk.politics.rush-limbaugh appears more widespread.

With a recent onslaught of insulting posts and namecalling by radical
conservatives and Rush-haters alike, the creation of a moderated
newsgroup has some intuitive appeal.  However, in my opinion, the spirit
of free inquiry demands that the group be unmoderated.  In an highly
charged ideological forum such as talk.politics.rush-limbaugh, the
potential censorship costs of moderation will prove too high.

Alt.fan.rush-limbaugh is one of the largest alt.* newsgroups, and I fully
admit that I think the high rate of traffic on alt.fan.rush-limbaugh
indicates that Rush-related subjects deserve a formal place on the usenet
hierarchy.  Moreover, Rush's radio show has become increasingly accepted
by the mainstream, non-ideological media as of late.  Rush has also
exhibited far more staying power than comparable talk show hosts.  It is
also essential to note that many sites to not offer access to alt.*
groups, and given that -- for good or ill -- Rush's popularity has soared
in recent years, people from those sites deserve the opportunity to
discuss Rush just as much their counterparts elsewhere. On the liberal
side of the aisle, the net also offers the perfect place
for Rush's thought to be subject to rigid scrutiny.

VOTES

If the proposal comes to a vote, I shall contact Ron Dippold within
twenty-one days of today's date.

--
     //////   //  //   //////   //   //////             Christopher Stone
    //       //  //   //  //   //   //            [e-mail]
   //       //////   /////    //   //////                  [phone]
  //       //  //   //  //   //       //           366 Lowell Mail Center
 //////   //  //   //   //  //   //////   Cambridge, Massachusetts  02138

------------------------------

Date: 20 Jan 1994 16:54:38 GMT
From: mvb.saic.com!unogate!news.service.uci.edu!usc!sdd.hp.com!hpscit.sc.hp.com!icon.rose.hp.com!hpchase.rose.hp.com![e-mail]
Subject: ThickLAN Ethernet
To: [e-mail]

[e-mail] wrote:
: I think I've seen the answer to this question posted a few moons ago, so
: please forgive me.  I've run across some Thick-LAN Ethernet coax.  I think
: it is 50-ohm, but I wonder if anyone has any other details on impedance,
: loss, etc.  It is the orange jacketed cable and is a little less than 1/2
: inch dia.

Brian,

Are there any numbers on the cable?  Without the numbers I can't be sure,
but here is a guess, from the Belden catalog:

89880 Ethernet Cable

Description:  Plenum version of 9880 trunk cable; Orange tint FEB Teflon
jacket, cellular FEP insulation, ring-band stripes marked every 2.5 meters
to aid users in tap placement.

Construction:  Aluminum Polyester +
           95% tinned copper braid +
           Duofoil +
           95% tinned copper braid

Diameter: .375 inches
Impedance:  50 ohms
Velocity factor: 78%
Capacitance: 26 pF/ft
Loss:  .19 db/100ft at 1 MHz
       .37 db/100ft at 5 MHz
       .52 db/100ft at 10 MHz
      1.20 db/100ft at 50 MHz

Chris Moore
N6IYS
[e-mail]

------------------------------

Date: 25 Jan 94 19:35:32 GMT
From: [e-mail]
Subject: Where is FAQ on EMF?
To: [e-mail]

A friend in Seattle is looking for info on electro-magnetic fields (EMF).
Gary Coffman mentioned a FAQ dealing with the subject.  Could Gary or
someone please advice where I might ftp a copy?  If anyone knows of other
relevant materials, bibliographies, etc., could you please send them to
me?  (Please send direct -- avoid clogging the bandwidth.)

Thanks.   Paul Marsh  N0ZAU     [e-mail]

------------------------------

Date: 25 Jan 1994 09:42:35 GMT
From: qualcomm.com!vixen.cso.uiuc.edu!howland.reston.ans.net!xlink.net!zib-berlin.de!netmbx.de!Germany.EU.net!EU.net!chsun!elna.ethz.ch!elektra![e-mail]
Subject: Yeasu FT416 mods wanted
To: [e-mail]

hello,
are there any mods for the yeasu FT416 available ?
I'm looking for:
 - extendet TX (got 140MHz .. 150MHz)
 - extendet RX (got 136MHz .. 176MHz)
 - repeater switch on beep, 1750 Herz like the euro version has
   (got the american version without that tone)
 - hidden, undocumented features

Thanks for any hints

Martin

--
Martin Peter, ETH Zuerich             e-mail: [e-mail]
Computing Support Group                   tel:    [phone]
ISG Gloriastrasse 35                      fax:    [phone]
8092 Zurich/ Switzerland

------------------------------

Date: (null)
From: (null)
Let's not forget 5R4GY as well.  Famous in Collins circles.

73,
Bob K2PH

--
----------------------------------------------------
Bob Schreibmaier K2PH  | UUCP:     ...!att!mtdcr!bob
AT&T Bell Laboratories | Internet: [e-mail]
Middletown, N.J. 07748 | ICBM:     40o21'N, 74o8'W

------------------------------

Date: 20 Jan 1994 17:22:52 GMT
From: news.cstar.andersen.com!news.acns.nwu.edu!casbah.acns.nwu.edu![e-mail]
To: [e-mail]

References <[e-mail]>, <cowart.759075998@neptune>, <[e-mail]>w
Subject : Re: DSP Audio Filters

In article <[e-mail]>,
Steve Milewski <[e-mail]> wrote:
>In article <cowart.759075998@neptune>, [e-mail] (Michael Cowart)
>wrote:
>
>>
>> I have an FT-990.  I also have the Timewave DSP-59.  If you liked what the
>> SCAF filters in the 990 did, the DSP-59 will knock your socks off.  On CW
>> it can can go down to 50Hz bandpass, all you hear is the tone with virtually
>> no ringing!!  But it really shines on SSB with its 2 noise reduction and
>> heterodyne elimination algorithms.  Try one some time, you'll be amazed!!
>> I have had the DSP-59  for about 8 months, and now I can't do without it!
>>
>> 73,
>> Mike
>
>Sounds interesting. I just bought a Ten Tec Omni VI and within a week will
>have all the optional filters (inluding 1.8khz SSB filter, 500, 250 hz CW
>filters and the 500 hz narrow filter for the second IF).
>
>Will the DSP help in this situation or would it be overkill?

For CW only, my guess is that the DSP is not worth it.  I have a Kenwood
850 with cascaded 500Hz filters or combination of 500Hz and 270Hz.  The
W9GR DSP unit (I expect the DSP-59 to be similar) offers no particular
advantage.

* Disclaimer: I do not operate SSB, so get the salt shaker ready.*
About SSB - the Omni Vi comes with the multi-heterodyne notcher
and so the only value will be from the white noise reducer.  All of the
DSP units that I have heard distort the audio when in this mode.  Further
they only work well when the SNR is high.  In that case, you may as well
use the rf gain pot - cheap and effective.  I discovered this in attempting
to get a clear broadcast station reception.

The only mode for which I have found the DSP filter to be of value
is RTTY.  This, I suspect, is because the filtering in Kam-All-mode
is a bit too all-mode --- compromised, that is.  :)

Sorry for raining on the DSP parade.

I think the next generation of products with
  - the kind of processing described in QEX for CW (nice artice Jon)
  - may be, harmonic alignment and interface with rig for automatic tuning/lock
    on SSB  (see the disclaimer above)
  - smarter rtty demodulators that exploit the mark/space partial redundancy
    better
might really begin to exploit the promise of DSP for ham radio communication.

Rajiv
aa9ch
[e-mail]

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End of Info-Hams Digest V94 #74
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