Date: Fri, 12 Nov 93 04:30:33 PST
From: Ham-Equip Mailing List and Newsgroup <ham-equip@ucsd.edu>
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Subject: Ham-Equip Digest V93 #101
To: Ham-Equip
Ham-Equip Digest Fri, 12 Nov 93 Volume 93 : Issue 101
Today's Topics:
FT-980 on MARS?
FT530 TRANSMITS on aircraft band! Only one? (3 msgs)
ICOM, IC 77 REVIEW
KDK Varactor source needed
remote switch
TH-78A & beyond MARS mods (2 msgs)
what do i need to broadcast
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----------------------------------------------------------------------
Date: Tue, 9 Nov 93 23:18:15 EST
From: swrinde!sdd.hp.com!caen!nic.umass.edu!noc.near.net!news.delphi.com!usenet@network.ucsd.edu
Subject: FT-980 on MARS?
To: ham-equip@ucsd.edu
Excuse my ignorance, Rick. Does the FT-980 have tube or solid state
finals? I wonder what is in this Yaesu modification kit... --Leigh/KM6JE.
------------------------------
Date: Wed, 10 Nov 1993 04:10:32 GMT
From: swrinde!cs.utexas.edu!utnut!torn!newshost.uwo.ca!uwovax.uwo.ca!ppddgc@network.ucsd.edu
Subject: FT530 TRANSMITS on aircraft band! Only one?
To: ham-equip@ucsd.edu
A friend of mine has a new Yaesu FT530 that TRANSMITS on aircraft frequencies
(am). Is this the only handheld that does this?
Dave Colvin VE3ZDC
University of Western Ontario
ppddgc@uwocc1.uwo.ca
------------------------------
Date: Wed, 10 Nov 1993 06:39:15 GMT
From: nwnexus!a2i!davidj@uunet.uu.net
Subject: FT530 TRANSMITS on aircraft band! Only one?
To: ham-equip@ucsd.edu
In <1993Nov10.001032.1@uwovax.uwo.ca> ppddgc@uwovax.uwo.ca writes:
>A friend of mine has a new Yaesu FT530 that TRANSMITS on aircraft frequencies
>(am). Is this the only handheld that does this?
>Dave Colvin VE3ZDC
Dave, does it transmit on AM or FM? Lots of these radios are sufficiently
broadband to put out some garbage down there (my Icom IC-02 will make
noise down to 120 MHz or so) but does it really track tune that far, and
does it actually do AM or a facsimile thereof, or does it output
FM there, which would be less than useful?
Flame retardant clause: This is in the interest of enhancing
emergency readiness for operations in accordance with FCC R&R 97.403.
Yes, I already have a type-accepted AM handheld and a license to use
it on the ground to coordinate the activities of aircraft.
73 David WA6NMF
--
David Josephson <david@josephson.com>
------------------------------
Date: Thu, 11 Nov 1993 07:53:50 GMT
From: nevada.edu!jimi!envoy!equinox!destree@uunet.uu.net
Subject: FT530 TRANSMITS on aircraft band! Only one?
To: ham-equip@ucsd.edu
I HAD to throw this in right about now. Regarding HT's and aircraft,
I have a good freind who has an Icom W2A, who is also a student pilot.
Recently, he plugged his little Icom into the lighter of the late 1960's
Cessna 172, and that was all she wrote. Either the lighter was 24 volt, or
positive ground. Anyway, he said his jaw hit the floor when he saw the smoke
pouring out of his little baby. The HT is currently in the ICU of Icom. I
will be interested to see what they have to replace.
The one thing that puzzles me a bit is that he was using the car cord
sold by Icom with the large filters on it. You would *think* that there would
be over-voltage protection at the very least. I'd rather buy another $30 cord
than a $500 radio. (BTW, we both have W2A's. He bought his on my
reccomendation. We have modified them for out of band operation, but alas
they transmit FM. So much for using them in the air.)
Louis A. Destree University of Nevada, Reno
destree@.unr.edu <OR> destree@equinox.bitnet Electrical Engineering
Amateur Radio: N7XNX (General Class) 1980 Honda CB750C
"The bad thing is life is short. The good thing is that it's hard!"
--
Louis A. Destree University of Nevada, Reno
destree@.unr.edu <OR> destree@equinox.bitnet Electrical Engineering
Amateur Radio: N7XNX (General Class) 1980 Honda CB750C
"The bad thing is life is short. The good thing is that it's hard!"
------------------------------
Date: 10 Nov 93 21:43:02 MDT
From: cs.utexas.edu!utah-morgan!hellgate.utah.edu!cc.usu.edu!sljx0@uunet.uu.net
Subject: ICOM, IC 77 REVIEW
To: ham-equip@ucsd.edu
ICOM IC 77 REVIEW
A FEW DAYS AGO I HAD A OPPORTUNITY TO USE IC 77 NEW HF RADIO FROM ICOM
IT HAS 50 CHANNEL MEMORY. AND FREQUENCY INCREMENT IS 100 Hz BY EITHER
MAIN DIAL OR UP/DWN KEY IN MICROPHONE. IT HAS NO FAST STEP LIKE 500 khZ
OR 1 MHz. SO IF YOU ARE AT 3500 MHz WANT TO MOVE TO 21 MHz, YOU HAVE TO EITHER
CLICK MAIN DIAL ABOUT 20000 TURN OR PUSH UP SWITCH IN MIC FOR ABOUT HALF HOUR.
I CALLED UP ICOM THEY SAID THIS RADIO IS MEANT TO BE USES AS THOSE PEOPLE
WHO USE SOME PARTICULAR FREQUENCY ALL THE TIME LIKE A PROBABLY MARS, CAP OR
FOR NET. (IT IS NOT TYPE ACCEPTED TO USE IN MARINE BAND).
AND MEMORY ARE PROGRAMED BY DEALER NOT USER, THERE IS NO DOCUMENTATION IN
MANUAL TO HOW TO PROGRAM THE MEMORY, IT ONLY SAY "ASK YOUR DEALER TO DO SO"
IT IS THE ONE OF THE WORST HF HAM GEAR I EVER SEEN.
IT IS NOT VERY SUITABLE RADIO FOR AMATEUR RADIO USE.
------------------------------
Date: Sun, 07 Nov 93 20:41:21 PST
From: pacbell.com!well!nigel.msen.com!sdd.hp.com!cs.utexas.edu!howland.reston.ans.net!math.ohio-state.edu!cyber2.cyberstore.ca!nntp.cs.ubc.ca!mala.bc.ca!oneb!ham!emd@network.ucsd.edu
Subject: KDK Varactor source needed
To: ham-equip@ucsd.edu
A friend of mine has a KDK FM 2025 MarkII rig, and wants to replace an
intermittent varactor. These are marked D26 and D27, and are apparently
type 1SV50.
I'd like to know:
An address where I can get KDK parts, if possible.
If not, a source for the varactors. He may want to buy a few of them to
find a pair reasonably well matched.
Please reply to me - he doesn't have e-mail access.
(Posting here is just fine, too)
Thanks, Bob, VE7EMD
Robert Smits There is *no* idiotproof filter.
VE7EMD Idiots are proof against anything!
Ladysmith B.C. - Richard Chycoski, VE7CVS
e-mail: emd@ham.almanac.bc.ca
------------------------------
Date: Tue, 9 Nov 1993 20:02:45 GMT
From: swrinde!gatech!howland.reston.ans.net!cs.utexas.edu!sdd.hp.com!hpscit.sc.hp.com!hplextra!hpfcso!sbass@network.ucsd.edu
Subject: remote switch
To: ham-equip@ucsd.edu
As part of a project of mine, I would like to construct a remote control
switch that operates on principles used by garage door openers and car alarm
systems. I was hoping that some of you might have personal experience in radio
circuitry that would be willing to give me a few pointers, or refer me to some
practical technical text on the subject. I need to make this thing from scratch
for use as a part of a demonstration. If you can help me, please send me some
e-mail. Thanks in advance.
Steve Bass
sbass@fc.hp.com
------------------------------
Date: Thu, 11 Nov 1993 05:51:00 GMT
From: pacbell.com!amdahl!netcomsv!netcom.com!msattler@ames.arpa
Subject: TH-78A & beyond MARS mods
To: ham-equip@ucsd.edu
In the official mod description from Kenwood, only surface-mount
diodes 4 and 5 (of the six) are described. The others are simply
labelled "beyond MARS". I'd like to hear from those who're
involved in the MARS program and who have removed any additional
diodes.
--
-----------------------------------------------------------------------------
Michael S. Sattler msattler@netcom.com +1 (415) 621-2903
Digital Jungle Software Encrypt now; ask me how. (finger for PGP key)
All that is required for evil to triumph is
for {wo}men of good will to do nothing.
------------------------------
Date: 11 Nov 93 21:13:02 GMT
From: ogicse!emory!kd4nc!n4tii@network.ucsd.edu
Subject: TH-78A & beyond MARS mods
To: ham-equip@ucsd.edu
msattler@netcom.com (Michael Sattler) writes:
>In the official mod description from Kenwood, only surface-mount
>diodes 4 and 5 (of the six) are described. The others are simply
>labelled "beyond MARS". I'd like to hear from those who're
>involved in the MARS program and who have removed any additional
>diodes.
>--
The BEYOND MARS mods are the ones that let you go the whole range of the
radio.... the MARS mods allow you xmit on all of the 440 HAM band and
also 141-151 usually.
Hope that helps!
John
>-----------------------------------------------------------------------------
>Michael S. Sattler msattler@netcom.com +1 (415) 621-2903
>Digital Jungle Software Encrypt now; ask me how. (finger for PGP key)
> All that is required for evil to triumph is
> for {wo}men of good will to do nothing.
------------------------------
Date: 9 Nov 1993 20:01:21 GMT
From: munnari.oz.au!spool.mu.edu!sol.ctr.columbia.edu!news.kei.com!newsstand.cit.cornell.edu!newsstand.cit.cornell.edu!usenet@network.ucsd.edu
Subject: what do i need to broadcast
To: ham-equip@ucsd.edu
In article <2bmn3n$neq@organpipe.uug.arizona.edu> todd,
todd@goat.geo.arizona.edu writes:
>like the title says, i need to know what sorts of equiptment i need to
get
>in order to be able to broadcast over an AM or FM frequency with as
little
>trouble from the FCC as possible. is there a transmitter that
broadcasts
>below FCC regulations?
>todd
I'm sure you'll get a ton of mail about doing it with 100 mw and short
antennas on the am and fm broadcast bands. Results will vary, but might
be sufficient for your needs.
What we used to do was run carrier current AM. Basically high power (appx
200-500 watts) am transmittesr that were coupled into the power lines
with special coupling networks that propagated the signal everyplace the
power lines went (till the next transformer) and gave us coverage of
entire dorms. You used to be able to buy commercial systems for this,
might still be available, or try hitting up a library for references. I
don't remember enough to be helpful on the tech details anymore
(basically it was a 500 watt am transmitter and modualter - lots of 811
tubes, and that special coupling network which if you built it wrong or
weren't careful installing it COULD GET YOU KILLED. So be careful if you
decide to experiment with this. ), you definately want to do some reading
on the subject. But when it works ,it basically gives you a very usable
am radio signal inside of the building it's feeding. WE had a network of
12 transmitters to cover two college campuses in a small town, linked by
high grade phone lines (along with an fm port on the head end of the
cable company and an educational fm station).
Hope that is a pointer in a potentially useful direction.
73 de Kevin, WB2EMS
------------------------------
Date: Mon, 8 Nov 1993 23:01:16 GMT
From: microsoft!hexnut!frede@uunet.uu.net
To: ham-equip@ucsd.edu
References <16C7B7A90.MIKEN@YaleVM.YCC.Yale.Edu>, <WY1Z.93Oct22114208@splinter.coe.northeastern.edu>, <consultCFwIJv.1xL@netcom.com>
Subject : Re: Yaesu vs. Kenwood HT info wanted
I also have had very good luck with my Yaesu 530. It can be modified to receive
pretty much continuously from 118-512 and 800-950. Early models of this rig (including
the one I bought) had a poor resistance to intermod. However, Yaesu has fixed this
problem (it's quite a significant redesign) and the new model is MUCH better. As
a testement to Yaesu's customer service, they brought my "old" 530 up to the latest
version at no charge to me. I just shipped it to Yaesu North America and a week
later, I was shipped back my updated radio. Contact Yaesu for details of this free
modification.
You can tell whether the 530 that you're buying is a "new" one (with the better
front end) by the shape of its antenna. The "old" model has a stubby rubber duckie
while the "new" one includes a much superior duckie which has a wide base extending
to a slim top section. All 530's which are boxed with this type of rubber-duckie
are the "new" model. Old models can be modified (including the replacement antenna),
but look for the "new" model when you are shopping for the 530.
Hope this helps,
Fredric Einstein
KB7UUC
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End of Ham-Equip Digest V93 #101
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