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1994-11-14
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Date: Sun, 17 Jul 94 04:30:13 PDT
From: Ham-Equip Mailing List and Newsgroup <ham-equip@ucsd.edu>
Errors-To: Ham-Equip-Errors@UCSD.Edu
Reply-To: Ham-Equip@UCSD.Edu
Precedence: Bulk
Subject: Ham-Equip Digest V94 #236
To: Ham-Equip
Ham-Equip Digest Sun, 17 Jul 94 Volume 94 : Issue 236
Today's Topics:
10 Meter Linear Wanted
Antenna safety
D2999 mods wanted
Kenwood TH-78A: reset processor
Looking for Handheld Personal Radio Transceiver
Need power supply advice
Radio Shack Realistic 2-m
Radio Shack Realistic 2-Meter Rig
Ten-Tec 1208 transverter - update
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: 16 Jul 1994 00:02:55 GMT
From: gatech!howland.reston.ans.net!agate!kennish@uunet.uu.net
Subject: 10 Meter Linear Wanted
To: ham-equip@ucsd.edu
In article <306pu4$7or@hammer.msfc.nasa.gov>,
Da Boss Troll <richard.krum@msfc.nasa.gov> wrote:
>In article <306nu6$r7v@search01.news.aol.com>, jwolter@aol.com (JWolter) says:
>>
>>I am looking for a 10 Meter Linear amp that someone has to sell, probably
>>in to 200W range, that is a Base or Mobile, i might be interested. However
>>i can only spend about $150 let me know if that sounds reasonable, i have
>>no idea.
>>Jason
>
><sigh>
>
>E-mail bomb this spam, anyone?
>
>DON'T POST IT! Please. Even though <<snick>> the safety just came off my
>flamethrower. Lesse here, wher's that address----<grin>
>
>--rich
He doesn't show up in the I-net callbook. Seller beware.
-Ken
------------------------------
Date: 15 Jul 1994 04:42:40 GMT
From: ihnp4.ucsd.edu!agate!headwall.Stanford.EDU!glass@network.ucsd.edu
Subject: Antenna safety
To: ham-equip@ucsd.edu
I need to mount an antenna for a 900 MHz spread-spectrum radio link.
According to the manufacturer of the radio equipment, it works best
when antennas are on a direct line of sight. However, because the
building where the antenna will be is only 18' high, and some of the
surrounding buildings are taller, it will need a tall mast or tower.
To figure out how high the antenna needs to be, I made a crude sextant
from a yardstick, a protractor, and a photo tripod. After a few
observations and a little math, I determined that one nearby building
with a flat roof (plus a small shed on top) was about 30' tall at the
roofline, with a chimney about 41' high. (Since local codes require
the chimney to be the tallest part of the building, it should end
higher than the shed.) Another building in the area, an old Victorian
mansion, came out to be about 54' high at its tallest spire.
The area where the antenna will reside is subject to strong winds all
year round, so the mast or tower will have to be steady and strong.
There's an average of one thunderstorm per day during the summer, so
lightning protection needs to be good. The lot on which the building
sits is 66' across, and there are high voltage power lines in the alley
about 6' beyond the property line. The building butts right up against
the opposite end of the property.
The antenna itself will be an omni with 9 dB of gain -- fairly expensive,
but necessary to give it a good reach even when it's iced over.
What's the best method of mounting the antenna safely, securely, and
high enough to work? The local Radio Shack said it had a 39' mast designed
for TV antennas, which could be mounted on the roof using an eave or tripod
mount. (The resulting height would be about 57' -- just about right.)
But of course, I don't trust Radio Shack to know anything about antenna
safety, or mounting it to resist winds. They also drew a blank when I
asked about grounding and lightning protection.
What do I need to know to get the antenna up (and have it stay up)? How
can I avoid having the building burn down if lightning strikes? How can
I protect the digital transceiver at the end of the coax? And what precautions,
if any, need to be taken about the power lines?
Any info, advice, comments, and pointers to literature would be much
appreciated.
--Brett Glass
--
"Beware when the great God lets loose a thinker on this planet.
Then all things are at risk. It is as when a conflagration has
broken out in a great city, and no man knows what is safe, or
where it will end." -- Ralph Waldo Emerson
------------------------------
Date: Wed, 13 Jul 94 15:50:00 -0500
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!vixen.cso.uiuc.edu!sdd.hp.com!col.hp.com!csn!cateye!john.bailey@network.ucsd.edu
Subject: D2999 mods wanted
To: ham-equip@ucsd.edu
One of my receivers is a Magnavox D2999. I am wondering if there are
any mods available for it. Specifically, I would like to (if possible)
find a way to increase the number of memory presets. Naturally I don't
have the manual or schematic. Thanks for any help.
------------------------------
Date: 15 Jul 1994 12:13:08 GMT
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!EU.net!Germany.EU.net!Munich.Germany.EU.net!thoth.mch.sni.de!news.sni.de!nanette!norton!schro@network.ucsd.edu
Subject: Kenwood TH-78A: reset processor
To: ham-equip@ucsd.edu
In <2vvcnb$7nd@apakabar.cc.columbia.edu> facchi@locarno.cc.columbia.edu (Athos Facchi) writes:
>Does anyone know how to reset the processor on a Kenwood TH-78A?
>I tried F for 2 seconds and then 0, but it did not work (I think).
If memory serves me well...
Press and hold PTT + MR, then POWER ON and hold all three for 1-2 seconds.
Hope this works ....
73 Django
DL5YEC
------------------------------
Date: Fri, 15 Jul 1994 20:08:18 GMT
From: ihnp4.ucsd.edu!galaxy.ucr.edu!library.ucla.edu!agate!howland.reston.ans.net!EU.net!Germany.EU.net!news.dfn.de!urmel.informatik.rwth-aachen.de!newsserver.rrzn.uni-hannover.de!Adam.Dyllon@@.
Subject: Looking for Handheld Personal Radio Transceiver
To: ham-equip@ucsd.edu
I'm currently on the market for a walkie-talkie type transceiver, and
was wondering if any of you had any suggestions. My target price range
is less than $1000 for a pair(or less that $500 for one). My main
concerns are range, sound clarity, and size. Thanks.
BTW: Currently, I have no e-mail access, so please post all replies to
the newsgroup. Thanks.
---Adam
------------------------------
Date: 15 Jul 1994 11:48:51 GMT
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!vixen.cso.uiuc.edu!prairienet.org!dhughes@network.ucsd.edu
Subject: Need power supply advice
To: ham-equip@ucsd.edu
I bought a Kenwood TH 215A handie-talkie at a hamfest
last weekend, but it did not have its original power supply.
The original is 10.15V @ 42.5mA.
Just how close do I have to be? Would I be effective (and safe)
using a 12V @ 500mA? Is the amperage critical, or does the
battery take what it needs and ignore the rest?
Thanks for any help! ---Dan
--
------------------------------
Date: Thu, 14 Jul 94 20:37:00 -0800
From: iat.holonet.net!alley.com!john.hiatt@uunet.uu.net
Subject: Radio Shack Realistic 2-m
To: ham-equip@ucsd.edu
>I HAve been considering getting into a 2-metre rig for backcountry
emergency >use. I have asked for recommendations and a few people
suggested the >Realistic >HTX-202 (?) is a great value. Well, it just
got better. RS has cut the price
>by $70 to $229. I don't have my FCC license yet but will soon.
The radio you are referring to is the HTX-404 at that price. The 2 meter
rig sells for $259 but when it goes on sale is usually about $188.
---
* OLX 2.1 TD * If this were an actual tagline, it would be funny.
------------------------------
Date: 16 Jul 94 20:34:00 GMT
From: news-mail-gateway@ucsd.edu
Subject: Radio Shack Realistic 2-Meter Rig
To: ham-equip@ucsd.edu
Greg in Digest 233 Writes:
>I have been considering getting into a 2-metre rig for backcountry
emergency
>use. I have asked for recommendations and a few people suggested the
>Realistic
>HTX-202 (?) is a great value. Well, it just got better. RS has cut the
>price
>by $70 to $229. I don't have my FCC license yet but will soon.
>
>The price is mighty attractive. Am I jumping the gun purchasing this radio
>at
>this time? If this radio is highly acclaimed, I would be willing to trust
>the
>judgement of practicing hams. Ought I buy this radio or hold off. I don't
>mind
>spending more for a better HT.
>
>Any comments? E-mail appreciated.
>
>
>
> Greg Smith
> AT&T Global Information Solutions
Well Greg,
I have had one for several months and am very pleased with it. I have had
no problems and have had may complements on the audio. It has some
very nice features that make it work the cost at $299 so $229 is a real
bargan. If I needed a 2-Meter WT I would buy one.
Only one shortcomming--the battery doesn't last as long as I would like.
Get an extra one...
Kevin
Legal stuff:
The above opinions are my own and not necessarily those of the staff,
faculty, administration, or lab animals (woof!) of The University of
Texas Health Science Center at San Antonio.
----------------------------------------------------------------------
Kevin R. Muenzler, WB5RUE The University of Texas Health
muenzlerk@uthscsa.edu Science Center at San Antonio,
Department of Computing Resources
** There is no such thing as a Monkey-Proof Program! **
** I can prove it! **
----------------------------------------------------------------------
------------------------------
Date: Sat, 16 Jul 94 08:18:27 -0500
From: news.delphi.com!usenet@uunet.uu.net
Subject: Ten-Tec 1208 transverter - update
To: ham-equip@ucsd.edu
I have to say something (unusual, but true)
I would rather wait for a TenTec than buy Jap-Crap. I have owned TenTec for
my entire Ham "career" and concur that this is a great company, great people
who take the time to HELP with technical problems. I own a 505 and a 555 abd I
can't say enough about TEnTec. I also ordered a 6 meter transverter -
I can wait . . . I would prefer quality design and components and there will
always be next year for the 6 meter season!
73
------------------------------
End of Ham-Equip Digest V94 #236
******************************