Date: Wed, 23 Feb 94 04:30:19 PST
From: Ham-Equip Mailing List and Newsgroup <ham-equip@ucsd.edu>
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Subject: Ham-Equip Digest V94 #42
To: Ham-Equip
Ham-Equip Digest Wed, 23 Feb 94 Volume 94 : Issue 42
Today's Topics:
Hardline / heliax (2 msgs)
Help with motorola MICOM...
htx-202 audio mod (?) (2 msgs)
MOTOROLA MITREK (2 msgs)
Need info of Grundid Satellit 700 & Sony ICF-SW77
Need manual for Knight 50W Xmitter
Recommendations for headset/boom mikes?
Watkins-Johnson HF-1000 receiver questions
Weird device.. Help in identifying please..
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policies or positions of any party. Your mileage may vary. So there.
----------------------------------------------------------------------
Date: Tue, 22 Feb 1994 12:57:29 GMT
From: agate!howland.reston.ans.net!torn!nott!cunews!freenet.carleton.ca!FreeNet.Carleton.CA!ae517@ames.arpa
Subject: Hardline / heliax
To: ham-equip@ucsd.edu
In a previous article, kinzer@dtsdev0.sps.mot.com (Dave Kinzer) says:
>
>system throughout, since that is what is expected at the transmitter
>and presumed antenna systems. I do know that cable companies sometimes
>have leftover pieces, but it is usually 75 ohm cable. Any pointers
>would be appreciated.
>
>-dave
There was a fellow advertising in 73 magazine who sold 1/4 wave matching units
for 75 ohm CATV cable. As well, I recall seeing an article in the same
rag which actually described how build these matching devices using
copper pipe/tubing and type N connectors. I will try to find this article
if you wish.
I recalling seeing something in QST technical notes suggesting using a
copper pipe reducer to fit the type N connector to the CATV cable.
Then ensure the 75 cable is cut to a multiple of 1/2 wavelength.
(taking into account VF)
I got over 100 feet of 3/4 inch 75 ohm hardline from my local cable
company for FREE!! It's still sitting in my garage awaiting the
installation of a tower. I used the spool for a picnic table.
73 de VA3RR/AA8LU
--
------------------------------
Date: Tue, 22 Feb 1994 15:54:16 GMT
From: spsgate!mogate!newsgate!dtsdev0!kinzer@uunet.uu.net
Subject: Hardline / heliax
To: ham-equip@ucsd.edu
In article <CLMMnu.IpC@freenet.carleton.ca> ae517@FreeNet.Carleton.CA (Russ Renaud) writes:
>There was a fellow advertising in 73 magazine who sold 1/4 wave matching units
>for 75 ohm CATV cable.
Another ham E-mailed this very suggestion as well, and thanks for the
input. The limitation of these is that they work at one frequency. I
tend to have great interest in fiddeling with one thing, getting it
to work, using it for a while, and going on to the next. On the other
hand, running the cables through my house is something I'd rather only
do once. Thus is born my desire to have 50 Ohm cabling, which is
50 Ohm at any frequency. My 2M/.7M desire of today is likely to turn
to 1.2GHz at a moment's notice (or is 6M next? Who knows?!?)
I suppose I could run the 75 Ohm cabling with 75 Ohm connectors, and build
the matching sections for each band externally. Given the difficulty of
this installation, (I still don't exactly know how I'm going to do it,) I
wouldn't mind putting some bucks into it to get it right the first time.
-dave
------------------------------
Date: Mon, 21 Feb 1994 08:09:29 -0600
From: agate!howland.reston.ans.net!cs.utexas.edu!asuvax!pitstop.mcd.mot.com!mcdphx!schbbs!mothost!lmpsbbs!NewsWatcher!user@ames.arpa
Subject: Help with motorola MICOM...
To: ham-equip@ucsd.edu
In article <1994Feb18.003840.1@leif>, jcraig@kean.ucs.mun.ca wrote:
>
> I outbid someone at our club auction for a motorola MICOM model
> L70SCC-1180AM HF ssb rig. I took the silly thing home, and was lucky
> to find that I had crystals to get it going on 160, 80 and 40m. Of
> course, it's USB only, but I did manage to have 0.5 dozen QSO's on CW.
>
> It seems that the RX sensitivity is down a bit. Can anyone tell me how
> to peak the RX? How are the band pass filters selected? Any
> info would be appreciated!
>
> 73 de Joe VO1NA
Have you made contact with the Motorola Canada sales force? They have a
full
set of operations and service manuals for this unit available from their
Parts Department. Don't expect this unit to have quite the same bench test
(ideal)
sensitivity as the stuff rolling off today's production lines, but when the
noise floor is 10 microvolts, you won't care anyhow.
--
Karl Beckman, P.E. < STUPIDITY is an elemental force for which >
Motorola Comm - Fixed Data < no earthquake is a match. -- Karl Kraus >
Some of the opinions expressed above aren't even claimed by the author!
Amateur radio WA8NVW @ K8MR.NEOH.USA.NA NavyMARS VBH @ NOGBN.NOASI
------------------------------
Date: 21 Feb 94 13:09:50 GMT
From: nprdc!ihnp4.ucsd.edu!swrinde!cs.utexas.edu!utah-morgan!hellgate.utah.edu!cc.usu.edu!sy_j.pgh.wec.com!user@network.ucsd.edu
Subject: htx-202 audio mod (?)
To: ham-equip@ucsd.edu
I recently got an htx202 and since I've been using it, I have gotten
signal reports that my audio is low. someone mentioned that radio
shack will do an audio circuit mod for free if it is under warranty.
anybody here knows what the mod is ? and if it can be done without
taking it to the RS service center which is open only at a very
inconvenient time.
jerry
N3RKD
------------------------------
Date: Tue, 22 Feb 1994 16:07:15 GMT
From: spsgate!mogate!newsgate!news@uunet.uu.net
Subject: htx-202 audio mod (?)
To: ham-equip@ucsd.edu
In article <ah301-210294080950@sy_j.pgh.wec.com> writes:
> I recently got an htx202 and since I've been using it, I have gotten
> signal reports that my audio is low. someone mentioned that radio
> shack will do an audio circuit mod for free if it is under warranty.
> anybody here knows what the mod is ? and if it can be done without
> taking it to the RS service center which is open only at a very
> inconvenient time.
>
> jerry
> N3RKD
Often when I talked to people they were able to guess I was using
an HTX202 based on the audio levels. I took mine to the local
repair center, and the tech said mine was about as low as he had
seen it. I think it is more like a quick adjustment rather than
a mod.
I believe it works better now, because I have asked folks and they
say that the audio is sufficient.
By the way, record all of your memory settings. When you get your
radio back, its memory will be clear.
--
R i c k C o t t l e
Email:cottle@prism.sps.mot.com
------------------------------
Date: Mon, 21 Feb 1994 16:38:21 GMT
From: agate!howland.reston.ans.net!vixen.cso.uiuc.edu!moe.ksu.ksu.edu!usenet-feed.umr.edu!crunch.nuc.umr.edu!sidener@ames.arpa
Subject: MOTOROLA MITREK
To: ham-equip@ucsd.edu
Does anyone have any experiance, hints, or tips on converting a Motorola Mitrek VHF
radio into a repeater?
I would appreciate any comments.
Thanks, N0WFL Scott Sidener sidener@crunch.nuc.umr.edu
------------------------------
Date: Tue, 22 Feb 1994 15:16:00 GMT
From: utcsri!newsflash.concordia.ca!pavo.concordia.ca!md_hill@uunet.uu.net
Subject: MOTOROLA MITREK
To: ham-equip@ucsd.edu
In article <1994Feb21.163821.3347@umr.edu>, sidener@crunch.nuc.umr.edu (Scott Sidener) writes...
>
> Does anyone have any experiance, hints, or tips on converting a Motorola Mitrek VHF
>radio into a repeater?
>
>
I believe that there is a file that describes the process for the Mitrek
available via anonymous ftp to ftp.catt.ncsu.edu in pub/hamradio.
Good Luck
-Mark Hillier Internet: MD_HILL@pavo.concordia.ca
Amateur: VE2HVW
PACKET: VE2HVW@VE2FKB
" I hear, I forget. I see, I remember. I do, I understand"
------------------------------
Date: 22 Feb 94 21:06:55 GMT
From: news-mail-gateway@ucsd.edu
Subject: Need info of Grundid Satellit 700 & Sony ICF-SW77
To: ham-equip@ucsd.edu
I intend to buy a SW radio. The 2 that I am interested in are Grundid Satellit
700 and Sony ICF-SW77. Does anyone know these radios ? Please give the review,
and recommendation.
Thank you in advance for the requested information.
T. Nguyen
------------------------------
Date: Mon, 21 Feb 1994 16:32:36 GMT
From: elroy.jpl.nasa.gov!usc!sol.ctr.columbia.edu!usenet.ucs.indiana.edu!battin@ames.arpa
Subject: Need manual for Knight 50W Xmitter
To: ham-equip@ucsd.edu
I need a manual (preferably with schematic) for an old Knight 50 Watt
HF transmitter. Anyone who can help me out reply by email.
Thanks...
--
Gene Battin
battin@cyclops.iucf.indiana.edu
------------------------------
Date: Mon, 21 Feb 1994 08:15:19 -0600
From: elroy.jpl.nasa.gov!usc!howland.reston.ans.net!cs.utexas.edu!asuvax!pitstop.mcd.mot.com!mcdphx!schbbs!mothost!lmpsbbs!NewsWatcher!user@ames.arpa
Subject: Recommendations for headset/boom mikes?
To: ham-equip@ucsd.edu
In article <2k9fih$4l9@epic.truevision.com>, davids@truevision.com (David
Spoelstra) wrote:
> I am looking for recommendations for headsets with boom microphones. I will
> use them with my Kenwood TS450 and my Yaesu FT530. I would like to find one
> with one earpiece for the FT530, and two earpieces for the TS450. I have
> seen several inexpensive ones that were attached to some Radio Shack walkie
> talkies, and one that came with a sound blaster type board, but I don't know
> of a source for these. I have also heard of an expensive brand called Heil.
> Are the Heil ones worth the cost, and does anyone have a phone number for
> the Heil company so that I can get a catalog.
>
> Thanks for the help,
> -David N9PGH
> davids@truevision.com
You will find that the Heil units are carried by Amateur Electronic Supply
(AES)
in their mail-order catalog. They are also available from many local
amateur
stores-have you checked with your local dealers?
--
Karl Beckman, P.E. < STUPIDITY is an elemental force for which >
Motorola Comm - Fixed Data < no earthquake is a match. -- Karl Kraus >
Some of the opinions expressed above aren't even claimed by the author!
Amateur radio WA8NVW @ K8MR.NEOH.USA.NA NavyMARS VBH @ NOGBN.NOASI
------------------------------
Date: Mon, 21 Feb 1994 21:07:18 GMT
From: olivea!news.bu.edu!att-in!cbnewse!parnass@ames.arpa
Subject: Watkins-Johnson HF-1000 receiver questions
To: ham-equip@ucsd.edu
I read a few catalog descriptions and Tom Roach's
Usenet review of the pricey Watkins-Johnson HF-1000
receiver. Can someone with an HF-1000 answer these
questions?
1. Does the HF-1000 have a passband tuning control
which functions for SSB? AM? The Grove catalog
mentions the passband tuning only on CW, but the
EEB catalog doesn't specify.
2. What bandwidths are available for FM reception?
3. Is the notch an IF notch? Does it affect the AGC?
4. How many VFOs (not memory channels) does the HF-
1000 have?
5. Is a service manual furnished with the HF-1000 or
is it an extra cost option?
6. Is there a squelch control? Does it work on all
modes?
7. When scanning memory channels, I want the receiver
to only resume scanning a few seconds after the
signal disappears. I don't want the receiver to
resume scanning in the middle of a transmission.
Does the HF-1000 support such operation?
Thanks.
--
==============================================================================
Copyright 1994, Bob Parnass, AJ9S
AT&T Bell Laboratories - parnass@ih4gp.att.com - (708)979-5414
------------------------------
Date: 22 Feb 94 20:43:37 GMT
From: elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!news.unt.edu!sol!io90@ames.arpa
Subject: Weird device.. Help in identifying please..
To: ham-equip@ucsd.edu
On my normal trek from the University of North Texas to Houston, I often
stop along the way for the obligatory gatorade.. Due to road conditions
I stopped at a truckstop... As I was browsing their radio/radar gear I
came across a midland device.. It had a mic jack but no indicator of what
you were transmitting.. There were a good deal of buttons though like
<"FOG1" "FOG2"... "AGND" etc etc> What is it? What does it do?
Anyone?
Trey Garland, N5RXZ
------------------------------
End of Ham-Equip Digest V94 #42
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