Date: Sat, 19 Mar 94 04:30:29 PST
From: Ham-Equip Mailing List and Newsgroup <ham-equip@ucsd.edu>
Errors-To: Ham-Equip-Errors@UCSD.Edu
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Precedence: Bulk
Subject: Ham-Equip Digest V94 #70
To: Ham-Equip
Ham-Equip Digest Sat, 19 Mar 94 Volume 94 : Issue 70
Today's Topics:
190-550 Kc & 235 mHz-1 Ghz Rx's 4 Sale
2M/70 cm through glass antennna recomendations?
Computer controlled receiver
Does anyone make a better AM filter for the TS-50?
Drake TR7 Gen'l coverage mod
FT-530 pl scan
ICOM 765 Automatic Antenna Tuner General Coverage Dumb
Icom R71A vs Icom R72
looking for a suggestion: ICOM 765 or ?
Need mobile tribander advice
UPGRADING AN AMP
VHF rig in a Toyota. Update. (2 msgs)
Vince in France asking about TS50 vs 140 please e-mail
Want-Transverters & Converters
Want TM-421A
Send Replies or notes for publication to: <Ham-Equip@UCSD.Edu>
Send subscription requests to: <Ham-Equip-REQUEST@UCSD.Edu>
Problems you can't solve otherwise to brian@ucsd.edu.
Archives of past issues of the Ham-Equip Digest are available
(by FTP only) from UCSD.Edu in directory "mailarchives/ham-equip".
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: Wed, 16 Mar 1994 21:14:14 GMT
From: ihnp4.ucsd.edu!library.ucla.edu!csulb.edu!nic-nac.CSU.net!charnel.net.csuchico.edu!charnel!olivea!apple.com!gallant.apple.com!dfrancis.apple.com!user@network.ucsd.edu
Subject: 190-550 Kc & 235 mHz-1 Ghz Rx's 4 Sale
To: ham-equip@ucsd.edu
CV-1750/U Electronic Frequency Converter - covers 235 to 500 mHz &
490 mHz to 1 gHz in two bands. 3.5" x 19" (rack mount) - $45
(Hook it up to your scanner or HF rig and tune away!)
Western Electric BC 453-B Receiver - covers 190 to 550 Kc.
Needs 24V & 250V DC. All tubes checked & good. - $35
(Army surplus, but in good shape)
Expect $5 to $10 shipping depending on where you live...
Replies to this e-mail or call (719) 382-2267 days (CST).
------------------------------
Date: 17 Mar 1994 14:10:53 -0800
From: ihnp4.ucsd.edu!library.ucla.edu!csulb.edu!csus.edu!netcom.com!netcomsv!abekas.com!tx!rob@network.ucsd.edu
Subject: 2M/70 cm through glass antennna recomendations?
To: ham-equip@ucsd.edu
lynch@jump (Scott Lynch) writes:
>I am looking for recomendations on a through the glass 2M/70 cm
>dual band antenna. Ideally, I would like a small "cellular look-
>alike" for everyday use that could be replaced with a 1/2 wave or
>longer element for use on the highway or in fringe repeater areas.
>I dont know if such an animal even exists or if making swaps like
>this would screw up the SWR, etc.
>Scott Lynch
>lynch@chdasic.sps.mot.com
I use the Larsen Dual Bander. Good gain at the price of length. It also
has the added advantage of not needing a ground plane on the inside of the
glass that some other antennas need. It cost about 90 dollars when I bought
it 2 years ago.
I wanted a cellular looking one orignally as well, but opted for the Larsen
since it was a dual bander (most short ones were only single band) and most
of my ham friends gave it favorable reviews.
.rob.
--
Rob Antonio NET:rob@abekas.com
Abekas Video Systems Inc. UUCP:...!{uunet,sun}!pyramid!abekas!rob
KD6DTO
1987 XLH
------------------------------
Date: Thu, 17 Mar 1994 20:18:52 GMT
From: ihnp4.ucsd.edu!usc!nic-nac.CSU.net!charnel.net.csuchico.edu!charnel!rat!zimmer!news@network.ucsd.edu
Subject: Computer controlled receiver
To: ham-equip@ucsd.edu
Check the Kenwood TS-850. I think it gives S-meter readings through
------------------------------
Date: 17 Mar 1994 14:16:35 GMT
From: yale.edu!nigel.msen.com!ilium!gdls.com!usenet@yale.arpa
Subject: Does anyone make a better AM filter for the TS-50?
To: ham-equip@ucsd.edu
In <9cH6ic1w165w@jackatak.raider.net>, root@jackatak.raider.net (Jack GF Hill) writes:
>rdewan@casbah.acns.nwu.edu (Rajiv Dewan) writes:
>> In article <hawley.763138723@aries>,
>> Chuck Hawley <hawley@aries.scs.uiuc.edu> wrote:
>> >dbraun@scdtintel.com (Doug Braun ) writes:
>>
>> >Has anyone noticed the raspy sound of CW on the TS50....
>> >sounds kind of like a square wave at times. This is mobile
>> >w/ a bugcatcher style antenna.
>>
I have had a TS-50s for about 9 months now. I have the cw filter (does
anyone even transmit on SSB? :-) ) in it.
I guess I must have a different rig that most of you out there, because
I've never experienced anything but excellent audio on this rig (although
I do use an external Motorola mobile speaker. The audio in AM mode is
better than I've experienced in a vast number of radios, and I might go
as far as to say the best I've heard on an amateur radio. The CW
performance is very good, and although not as good as my Signal/1, it's
equal to or better than a lot of rigs.
So far, I've compared it to a Yaesu FT-707, FT-310, FR-101, Drake TR4CW,
TR4C w/Sherwood mods, TR-7, Signal/1. While not an exhaustive list,
these radios are good performers.
Bill
PS I don't do ICOM.
------------------------------
Date: Thu, 17 Mar 1994 20:26:15 GMT
From: ihnp4.ucsd.edu!galaxy.ucr.edu!library.ucla.edu!csulb.edu!csus.edu!netcom.com!greg@network.ucsd.edu
Subject: Drake TR7 Gen'l coverage mod
To: ham-equip@ucsd.edu
The easiest answer to WARC coverage on the TR7 is to remove the
transmit-inhibit 'feature.'
Unfortunately, I've lost track of the faded fax that told me how
to do it.
Does anybody have the info?
I'm still looking for another NB7, as well, or other 7-line goodies.
Greg
------------------------------
Date: 17 Mar 1994 20:44:04 -0500
From: hp81.prod.aol.net!search01.news.aol.com!not-for-mail@uunet.uu.net
Subject: FT-530 pl scan
To: ham-equip@ucsd.edu
The customer service rep at Yaesu said that the mistake in the manual about pl
tone search is the most frequently asked question on the customer service
lines....
You have to have the radio in Tone Tone Squelch mode for it to work.
-Wynn
------------------------------
Date: Fri, 18 Mar 94 10:19:19 GMT
From: ihnp4.ucsd.edu!sdd.hp.com!sgiblab!cs.uoregon.edu!reuter.cse.ogi.edu!netnews.nwnet.net!serval!eecs.wsu.edu!glagowsk@network.ucsd.edu
Subject: ICOM 765 Automatic Antenna Tuner General Coverage Dumb
To: ham-equip@ucsd.edu
I am using my ICOM 765 for USAF MARS operation on frequencies in the
2.6 mhz, 3.0 mhz, 4.5 mhz, 7.5 mhz, and other frequencies out of the
way from the usual amateur bands... Above 10mhz it works quite well
on ANY frequency.... but below that it is "dumb" and doesn't converge
on a good setting, even with a 50ohm dummy load.... I therefore
resort to disabling the built in ATU and use an external one...
Has anyone discovered how to make the IC-765 internal ATU more "intelligent"
with regard to operating on general coverage frequencies below 10 mhz?????
--
- Terry G.
===========================================================================
Dr. Terry G. Glagowski INTERNET: glagowsk@eecs.wsu.edu
Assistant Professor PROFS: glagowsk
Electrical Engr. & Computer Sci. LOCATION: 12th Floor Farm Credit Bldg.
Washington State University PHONE: (509) 456-3275
West 601 First Avenue FAX: (509) 456-2866
Spokane, WA 99204-0399 USAF MARS: AFA5BP AMATEUR: W1TR
------------------------------
Date: Thu, 17 Mar 1994 08:20:22 +0600
From: ihnp4.ucsd.edu!swrinde!cs.utexas.edu!news.tamu.edu!idmb-secretary.tamu.edu!user@network.ucsd.edu
Subject: Icom R71A vs Icom R72
To: ham-equip@ucsd.edu
In article <2m7qm1$3qg@clarknet.clark.net>, josephl@clark.net (Joseph A.
Liu) wrote:
> Which one is better?
>
Most of the reviews I've read, including the one in the PASSPORT TO WORLD
BAND RADIO, agree that the R71A is much better than the R72. The filters
are not as good on the R72, and there are better radios than it in its
price range. I've never used the R71A, but have the precurser, the R70,
which doesn't have the direct entry keypad or computer control. It's a
wonderful receiver, I have no complaints at all about it, and plan on using
it in tandem with the TS-830 transceiver I'm planning on getting.
Troyce
KC5CBI
--
--------------------------------------------------------------------------
Please read THE ELEMENT OF FIRE by Martha Wells, a Tor hardback at
quality bookstores near you. I live with the author and want
to go back to Disney World this year :)
--------------------------------------------------------------------------
------------------------------
Date: Fri, 18 Mar 1994 05:24:05 GMT
From: ihnp4.ucsd.edu!swrinde!gatech!howland.reston.ans.net!wupost!csus.edu!netcom.com!netcomsv!xyzoom!rob@network.ucsd.edu
Subject: looking for a suggestion: ICOM 765 or ?
To: ham-equip@ucsd.edu
I have a Kenwood TS440SAT, and I haven't been that happy with the
receiver performance. I am doing a lot more listening these days than
talking, so would like something with good filter options and bandpass
tuning, and just a better receiver in general. I was told by someone
that the IC 765 transceiver is outstanding in receiver performance; I
am not familiar with it, except that the local hamradio store doesn't
sell them any more. I was also told that the IC728 has a good
receiver but not as good as the 765.
I am getting back into SWL'ing more, so the receiver is really the
most important item for me...
Can anyone suggest a transceiver under 1500$ that would fill the bill?
Thanks
--Rob
--
Rob Lingelbach KB6CUN | 2660 Hollyridge Dr LA CA 90068 213 464 6266 (voice)
rob@xyzoom.info.com | "Forgiveness is the fragrance of the violet that
robl@netcom.com | clings fast to the heel that crushed it" -Roemisch
------------------------------
Date: Thu, 17 Mar 1994 00:23:26 GMT
From: ihnp4.ucsd.edu!usc!elroy.jpl.nasa.gov!ncar!asuvax!pitstop.mcd.mot.com!mcdphx!jaj@network.ucsd.edu
Subject: Need mobile tribander advice
To: ham-equip@ucsd.edu
>> I have a Kenwood 742 configured with 220, 440, and 1200. I took out the 2 met
>> band module that originally came with it and sold it. Kenwood does not offer
>> this radio in this configuration (in the U.S., anyway) but it works great! I
>> have had absolutely no problems with this radio in a year and it has a lot of
>> features. My only complaint is the microphone - the DTMF buttons are hard to
>> push.
>>
> John,
> I also have a 742 and love it. I would like to do something similar to what
> you are running except that I want 50, 400 and 1200. Did you have to do
> any mods to the 440 unit to get it to working in this configuration? I second
> your opinion on the DTMF buttons on the mic. Look forward to your reply. 73
Jim,
Changing out the band modules requires a little mod work but not too much.
Kenwood almost did it right by making the modules very similar and by using the
same outer cases for them. The only thing different is that the main power
connection comes into the 2 meter module. When you install a third band module,
you swap out a power bus strip that extends the power bus on to the third band
module. In essence, you bolt the three modules together into a brick, and part
of the strapping is the power bus which originates in the 2 meter module.
If you look at the other modules, they have the holes in the PCB board for the
power connector that comes on the 2 meter module. So, all you have to do is take
it off the 2 meter module and put it on another. I put it on the 440 module
because I knew that one would always be in the "system". It really is that
simple. A local ham store does it and will sell to anyone a 742 with 2 440
modules or 2 2-meter modules for true full duplex with one slot left over. It
works great because the control head doesn't care what the band is.
One other tidbit - you can put the modules in any order and they will come out
on the control head in that order. Just make sure that after you swap the
position of a module, you reset that module. Kenwood tells you to do this with
any new module you install as the 3rd module. I didn't do this and found out the
hard way that all the channels I had stored were lost after I powered off the
radio. It fools you because it looks like everything is okay but it really
isn't.
I know lots of people who have done this band module mod and it works fine. The
only unknown is what Kenwood will do if I ever send it in for repair, but I
think the local shop will help me if I do. They are Hardin Electronics in Fort
Worth, Texas, and they advertise in the back of QST. They might even buy your 2
meter module if you want to sell it. (No, I don't work there or own stock, but
the manager, Lee, is a good friend of mine.)
Good luck!
--
John A. Johnson N5NHH \ "A spare tube & a radio - don't leave
Systems Engineer \ __o home without them!"
Motorola Computer Group _'\< _
Dallas, Texas (*)/'(*) jaj@dal.mcd.mot.com
------------------------------
Date: Fri, 18 Mar 1994 01:43:26 GMT
From: ihnp4.ucsd.edu!sdd.hp.com!hp-cv!hp-pcd!hpspkla!depaul@network.ucsd.edu
Subject: UPGRADING AN AMP
To: ham-equip@ucsd.edu
Hello folks.
I've got a Clipperton-L, which uses 4-572B's. Aside from the AG6K
suppressor kit, what upgrades can I make to the amp to bring the
performance/componentry up to current level?
Thanks for your help,
Marc DePaul
depaul@hpspksf.spk.hp.com
------------------------------
Date: Fri, 18 Mar 1994 13:59:11 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!news.moneng.mei.com!uwm.edu!mixcom.com!kevin.jessup@network.ucsd.edu
Subject: VHF rig in a Toyota. Update.
To: ham-equip@ucsd.edu
I previously asked about installing a 50 Watt 2-meter/70cm rig in
a Toyota or Honda. I received a couple of horror stories saying
not to try it as the ECU will most likely be damaged.
I wrote to Toyota and received and amateur radio application note
that was not very encouraging.
Well I got sick of connecting antennas, power supplies and speaker mikes
to my HT every time I got in and out of the car so I installed a
Yaesu FT2400H 50 Watt 2-meter mobile rig in my 1991 Toyota Tercel (bottom
of the line) car. I started the car and and started transmitting at
5 watts while listening for any change in engine perfomance such
as funny noises or rough idling. I then went to 25 and 50 Watts
and had no problems. Hopefully, things will continue that way. No
funny dashboard electronics or problems with the stereo either.
In the Tercel, the engine computer is mounted dead center of the
dashboard just behind and below the radio. I mounted the Yaesu
under the passenger side dash (almost eliminating what little
leg room there was) about 8 inches to the right of the ECU.
I ran 14 guage wire for the power supply directly to the battery
by poking the wire through the wide grommet used for the air
conditioning condensor drain.
The antenna is a Comet dual bander on a trunk lip mount using
the Comet low-loss coax.
The Honda is next.
Regardless of my results, Toyota owners should proceede at their
own risk!
Good luck and 73!
--
/`-_ kevin.jessup@mixcom.com
{ }/ Marquette Electronics, Inc
\ / N9SQB, ARRL, Amateur Radio
|__*| N9SQB @ WD9ANY.#MKE.WI.USA.NA
------------------------------
Date: 18 Mar 94 15:37:11 GMT
From: yuma!galen@purdue.edu
Subject: VHF rig in a Toyota. Update.
To: ham-equip@ucsd.edu
In article <1994Mar18.135911.17793@mixcom.mixcom.com> kevin jessup <kevin.jessup@mixcom.mixcom.com> writes:
>I previously asked about installing a 50 Watt 2-meter/70cm rig in
>a Toyota or Honda. I received a couple of horror stories saying
>not to try it as the ECU will most likely be damaged.
>
>I wrote to Toyota and received and amateur radio application note
>that was not very encouraging.
****Tercel installation details deleted****
****It was a success****
>Regardless of my results, Toyota owners should proceede at their
>own risk!
Could you elaborate as to what Toyota said in their app note?
Galen, KF0YJ
------------------------------
Date: Fri, 18 Mar 1994 02:04:17 GMT
From: ihnp4.ucsd.edu!swrinde!cs.utexas.edu!howland.reston.ans.net!wupost!csus.edu!netcom.com!dgf@network.ucsd.edu
Subject: Vince in France asking about TS50 vs 140 please e-mail
To: ham-equip@ucsd.edu
Sorry I lost your e-mail address. We have been e-mailing about TS50 vs
140 vs 450. Could you please e-mail me again so I can get your address?
Thanx! 73 Dave WB0GAZ dgf@netcom.com
------------------------------
Date: 17 Mar 94 04:59:11 MDT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!cs.utexas.edu!utah-morgan!hellgate.utah.edu!cc.usu.edu!NewsWatcher!user@network.ucsd.edu
Subject: Want-Transverters & Converters
To: ham-equip@ucsd.edu
Want 2 meter or 435mhz transverters or receive only converters.
Must be solid state.
Reply here or call 412-244-618
--
Regards,
Dick Boley N3HKN Pittsburgh
------------------------------
Date: 17 Mar 1994 15:01:43 -0800
From: ihnp4.ucsd.edu!usc!usc!not-for-mail@network.ucsd.edu
Subject: Want TM-421A
To: ham-equip@ucsd.edu
I would like to get a Kenwood TM-421A, a 35 watt 440Mhz FM rig.
Please e-mail with ur quote. Tnx.
Dick
--
Richard Mead, Computer Services Engineer (213) 740-2957
University Computing Services, University of Southern California
NET: mead@usc.edu, AmericaOnline: DICKMEAD, Hamradio: WB6NGC@K6VE
------------------------------
End of Ham-Equip Digest V94 #70
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