Date: Thu, 17 Feb 94 04:31:02 PST
From: Ham-Equip Mailing List and Newsgroup <ham-equip@ucsd.edu>
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Subject: Ham-Equip Digest V94 #35
To: Ham-Equip
Ham-Equip Digest Thu, 17 Feb 94 Volume 94 : Issue 35
Today's Topics:
Alinco battery packs
Alinco DJ580 for sale
Drake R-4 Crystal Substitute
Experience with Ray-O-Vac "Renewal" batteries - disappointment
GLB Channelizer GLB400B
HeathKit for sale
Help me find quartz for TV station in Novosibirsk
HT Recs out there?
IC-W2A problems ticking on 440mhz
ICOM Radios, AQS and IF Filters
Kenwood TR2500
rotator ??? (2 msgs)
Send Replies or notes for publication to: <Ham-Equip@UCSD.Edu>
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We trust that readers are intelligent enough to realize that all text
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----------------------------------------------------------------------
Date: Wed, 16 Feb 1994 17:54:02 GMT
From: newshub.nosc.mil!crash!jhawk@network.ucsd.edu
Subject: Alinco battery packs
To: ham-equip@ucsd.edu
Anybody have experience in breaking into and replacing cells in alinco
battery packs? In particular the EBP-10N for the DJ-160T.
------------------------------
Date: 16 Feb 1994 15:40:23 -0500
From: library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!cs.utexas.edu!swrinde!sgiblab!sgigate.sgi.com!olivea!news.bbn.com!petra!cass.ma02.bull.com!cass.ma02.bull.com!not-for-mail@@
Subject: Alinco DJ580 for sale
To: ham-equip@ucsd.edu
For Sale Alinco DJ580 dual band HT
covers 2M and 440. Brand new, only used 10 times.
Comes with all accessories including quick charger.
All for $450 or Best Offer.
Call John (WA1TLX) until 10pm EST @ 508 663 5744
(posted for John by Bob Tripi (N1KFV) who can accept
mail on Johns behalf)
------------------------------
Date: 15 Feb 1994 21:49:15 GMT
From: ucsnews!sol.ctr.columbia.edu!destroyer!newsxfer.itd.umich.edu!news.cic.net!magnus.acs.ohio-state.edu!peri.acs.ohio-state.edu!rdixon@network.ucsd.edu
Subject: Drake R-4 Crystal Substitute
To: ham-equip@ucsd.edu
In addition to the FS-4 previously mentioned here, another small company used to
make an analog VFO kit that accomplished nearly the same thing. It plugs into a
crystal socket, and it contains a separate 500khz crystal calibrator. You use the
calibrator to set the VFO to the 500 khz segment you wish to receive, and then it
works just like a crystal. It runs from 12VDC. I think the guy who made them is
K9ZMU. They are of course not as stable as a crystal or synthesizer, but it is not too bad, and certainly good enough for listening to short wave broadcast stations.
Note that there tuning ranges that do not work well even with the intended Drake
crystals because of IF mixing problems, and that problem is much worse if you intend
to use a substutute device to control an associated T4X transmitter.
Bob W8ERD
------------------------------
Date: Mon, 14 Feb 1994 17:49:32 GMT
From: agate!howland.reston.ans.net!cs.utexas.edu!swrinde!emory!news-feed-2.peachnet.edu!umn.edu!rabbit.cccs.umn.edu!RWH@ames.arpa
Subject: Experience with Ray-O-Vac "Renewal" batteries - disappointment
To: ham-equip@ucsd.edu
In article <dgfCL6L1t.Mx1@netcom.com> dgf@netcom.com (David Feldman) writes:
>From: dgf@netcom.com (David Feldman)
>Subject: Experience with Ray-O-Vac "Renewal" batteries - disappointment
>Date: Sun, 13 Feb 1994 21:01:02 GMT
>I purchased four "D" cells and their recharger. My application requires
>6VDC at about 5 amps continuous. When new, the cells decreased from 6V
>(series connected) output to about 4V output rather linearly during about
>30 minutes of loading. I recharged the cells as directed, and repeated the
>usage. After only 15 charge/discharge cycles, the battery reached 4V output
>after only 5 minutes of usage (again, a linear time/voltage discharge).
>I looked for one "weak" cell in the string, but each cell was similar to
>the others at any given point in time. I tried this test only on one set of
>4 cells purchased at the same time from a local retailer.
First, wouldn't gel-cells be a better bet for this type of application? It
seems like a 30 amp-hr draw is a bit much to expect from D cell batteries.
I purchased a package of AA's and the 4 unit charger to see how well Renewals
lived up to their hype. I also picked up a package of 4 Ray-O-Vac alkalines
and three identical single AA flashlights. I loaded up the flashlights with
a Renewal, an alkaline and a freshly charged Millenium nicad and ran each until
the cells were exhasted. The regular alkaline lasted about 9 hrs, the Renewal
quit after 6 hrs and the Millenium gave up the ghost at 2.5 hrs. A second test
yielded almost identical results except the Renewal quit at 5:50.
I've since cycled the Renewal cell 10 times and the life is down to about 4
hrs. It seems to lose 10 to 15 minutes of life per charge. I'm not sure how
a more realistic load would effect the outcome, but I would think that the
deep discharge is probably the worst case for the Renewals. I called the 800
number in the coupon booklet and they are sending me a packet of technical
materials on the Renewals.
After playing with them for a week or so now, they seem like they are ideal
for applications where I would normally use alkalines, but I'm not about to
replace the nicads in my Walkman or PRO-43 which get cycled fairly frequently.
I have a phone and a couple of remote controls that eat AAA's for lunch that
are going to get Renewals, and I have a friend that swears by them for use in
his Sony Watchman where the voltage difference seems to make a fairly big
difference.
--rick
N0LOX
+--------------------------------------------------------------------+
| Richard Hoffbeck, Sr Analyst e-mail: rwh@cccs.umn.edu |
| Prostate, Lung, Colorectal & Ovarian cis: 72406,521 |
| Cancer Screening Trial voice: (612) 627-4151 |
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+--------------------------------------------------------------------+
------------------------------
Date: 15 Feb 1994 17:47:15 GMT
From: gulfaero.com!vixen.cso.uiuc.edu!howland.reston.ans.net!usenet.ins.cwru.edu!magnus.acs.ohio-state.edu!peri.acs.ohio-state.edu!rdixon@network.ucsd.edu
Subject: GLB Channelizer GLB400B
To: ham-equip@ucsd.edu
In article <2D5FC0FC@glenayre_smtp>, clee@vancouver.glenayre.COM (Lee, C.F.) writes:
|>
|> I pick up a GLB400B channelizer and am wondering if anyone has any
|> information regarding this unit. I believe it is a synthesizer meant to
|> operate with crystal type 2m transceivers. I would appreciate any
|> information.
|>
|> Thank you.
|> CF Lee, ve7lcf
You are correct, that is exactly what it is. I have one in operation now myself.
Its output can be fed into a crystal socket of the 2M radio, and then it becomes
synthesized. But keep in mind that the GLBs were customized to work at whatever
frequency the crystals were, and that differs for various radios. Hence it may
not work in your radio without modification. It requires 12VDC to power it.
Bob W8ERD
------------------------------
Date: 16 Feb 1994 21:48:04 GMT
From: library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!wupost!bigfoot.wustl.edu!cec3!mne1@network.ucsd.edu
Subject: HeathKit for sale
To: ham-equip@ucsd.edu
I have a heathkit Sb-100 with matching speaker/power supply for
sale. I have no use for it since I live in a dorm, and no room for it.
It is in the box, with manual and everything.
I'll even throw in microphone, speach compressor, and Bilal Isotron for 10M
-t>b;Nw
leave me email or callsB: Oe3F
------------------------------
Date: 16 Feb 94 13:50:16 GMT
From: nprdc!ihnp4.ucsd.edu!sdd.hp.com!spool.mu.edu!howland.reston.ans.net!pipex!uknet!EU.net!news.eunet.fi!KremlSun!kiae!relcom!newsserv@network.ucsd.edu
Subject: Help me find quartz for TV station in Novosibirsk
To: ham-equip@ucsd.edu
Hi, world!
Anybody know where can I find a few quartz resonators for
governmental TV station in Novosibirsk, becouse component plants in
Russia are stay or closed and component distributors demand minimal order
in $1000.
Please, help me find quartz
Freq Q-ty
98,217 MHz 1
48,972 ... 1
49,986 1
50,388 1
50,791 1
52,000 1
52,201 1
52,590 1
53,368 1
44,333333 1
5,13550 8 <-- urgent & urgent
5,040 2 <--
98,217 KHz 2
Please, answer me directly by e-mail, because I don't follow
this newsgroups.
Thanks,
----
Alexandr N.MAINICHEV /Telex: (64)412062 OCTET SU,
/ BOX 50516
Dipl.Physic. / POST BOX 82, / main@msib.nsk.su
Director of / NOVOSIBIRSK-90, / Fax:(383 2) 35 68 11
"Agency MicroSib" / 630090, RUSSIA / Ph :(383 2) 35 44 28
------------------------------
Date: 14 Feb 94 22:09:30 GMT
From: concert!news.duke.edu!jdc2@rutgers.rutgers.edu
Subject: HT Recs out there?
To: ham-equip@ucsd.edu
Jesse,
I have a Kenwood TH78A, and I love it. I've also been out of the
market for a year, but it was the best dual band radio I could find. I
am also a college student, and I love having an HT. Try operating one
with a speaker mic while riding a bike (with the HT in your backpack).
That gets interesting.
The 78A might be a tad pricy (mine was upwards of 500 I think), but I
also got some toys to go with it. I must admit a brand allegance to
kenwood, but that's just me. I know you could not go wrong with a 78,
so look into it if you get the chance. On a side note, it looks so cool
that you probably won't get any dorks saying "hey, is that a CB?"
I'll keep the post short - mail me if you want more info
N5SKQ (J. Carter)
___________________________________________________
J. D. Carter - jdc2@acpub.duke.edu
------------------------------
Date: Wed, 16 Feb 1994 10:19:12 -0500
From: sgiblab!swrinde!cs.utexas.edu!howland.reston.ans.net!europa.eng.gtefsd.com!news.umbc.edu!eff!news.kei.com!uhog.mit.edu!nntp.club.cc.cmu.edu!news.sei.cmu.edu!bb3.andrew.@@pacbell.com
Subject: IC-W2A problems ticking on 440mhz
To: ham-equip@ucsd.edu
ICOM W2A
On 440mhz transmit the red transmit LED pulses about once per second.
If you watch the power output it pulses at the same time. If you
transmit into a dummy load for 60seconds or so at full power so the back
of the unit warms up then the problem goes away till it cools down.
Eventually the transmit section fails.
Sound familure? I know of two radio for sure and I heard tell of 13
more. If your radio does this let me know I am trying to find a good
fix for this common failure mode.
------------------------------
Date: 14 Feb 1994 13:44:57 GMT
From: olivea!spool.mu.edu!torn!csd.unb.ca!upei.ca!UPEI.CA!seeler@ames.arpa
Subject: ICOM Radios, AQS and IF Filters
To: ham-equip@ucsd.edu
I would like to ask the readers two questions about the Icom radios -
in particular - the IC275 and IC475.
First - Each has a FM IF filter labeled : CFW 455E. I would like to
know what the band width of this filter is. I can copy 9.6 KB
packet ( Ko-23, UO-22) reasonably well - but was wondering
if I shoud consider replacing it with a filter with better
pass band characteristics.
Secondly: CAn anyone expand on the term " Amateur Quinmatic System "
That Icom uses to describe the AQS port on the rear of each
radio. I am aware of the pin information - but was wondering
to what use I can put these ports to other than 9.6 Kb hookups.
Thanks for any information you may be able to provide me in respect to these
questions.
73 de Dave, VY2DCs
Internet: Seeler@UPEI.CA
------------------------------
Date: Wed, 16 Feb 94 22:31:41 GMT
From: mnemosyne.cs.du.edu!nyx!jsteinhu@uunet.uu.net
Subject: Kenwood TR2500
To: ham-equip@ucsd.edu
Does anybody have any information about the Kenwood TR2500, I need to
find out about it and don't even know what band it is. :)
ANY information would help a lot.
Thanks de N1MAM
--
jsteinhu@nyx.cs.du.edu
------------------------------
Date: 15 Feb 94 15:28:12 GMT
From: yuma!galen@purdue.edu
Subject: rotator ???
To: ham-equip@ucsd.edu
In article <QhLyo0y00YUoApKUE4@andrew.cmu.edu> Chris Beasley <cb1p+@andrew.cmu.edu> writes:
>Hey folks, looks like it's time to consult the net.wisdom on this one.
>I have an old (circa 1960) Channelmaster antenna rotator and a page
>of documetation that includes the rotator and the controller. From
>the schematic, it appears that the rotator and controller are just a
>pair of 90degree windings at about 8 ohms each that are connected
>together to form a synchro pair?
Much deleted.
>Thanx in advance and 73!
>Chris
>N3PDG
I think what you have are called SELSYNS. I have a c1951 Air Force Radar
manual that describes them in some detail.
Manual states they are also called SYNCHRO, AUTOSYN, and SYNCHROTIE.
Try looking in some OLD radar/radio books.
My book is titled 'Radar Circuit Analysis, AF Manual 52-8'.
Galen, KF0YJ
------------------------------
Date: Mon, 14 Feb 1994 16:28:32 -0500
From: elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!math.ohio-state.edu!cis.ohio-state.edu!news.sei.cmu.edu!bb3.andrew.cmu.edu!andrew.cmu.edu!cb1p+@ames.arpa
Subject: rotator ???
To: ham-equip@ucsd.edu
Hey folks, looks like it's time to consult the net.wisdom on this one.
I have an old (circa 1960) Channelmaster antenna rotator and a page
of documetation that includes the rotator and the controller. From
the schematic, it appears that the rotator and controller are just a
pair of 90degree windings at about 8 ohms each that are connected
together to form a synchro pair?
The only difference between the rotator and the controller is that
there is another xformer in the controller hooked up to line AC on one
side and with two secondaries hooked up to the "control windings?" in
the controller.
I guess I could try to imitate some lame ascii graphics or something
:-/
Rotator Controller Rotator
---------------------------------------------
| | |
< < |
> > |
< < |
| | |
--/V\/V/\/V\-C-/V\/V\/V\-- ----------/V\/V/\/V\-C-/V\/V\/V\--
| |
> >
< <
> >
| -------------|
Whew, that's a bitch! I am not gonna get the whole schem. this way.
how about if I just elaborate verbally....
The rotator on the right appears to have four windings connected
into two that are not connected in the center, thus forming two
90 degree windings. The two ends are commoned to produce the line I
call "common" going back to the controller. The other two lines going
back to the controller are the two winding power lines.
There is something in the controller that is the same that I am
calling the control transformer for lack of a better term. There is
also a transformer hooked up to 120VAC with two secondaries, a switch
(probably for direction sense) and a capacitor.
If this is all still too confusing I can try to enter more of the
schems.
What I am wonderign is, how to control this rotator. Eventually I
would like to hook up to my computer but for now I would be happy to
have a box with compass points and a dial on it. I have one of those
actually but it seems to be the wrong kind. It has four wires to
connect to for one thing and has a solenoid that I think is supposed
to move a compass needle when pulses come back from the rotator. It
doesn't work with my rotator any way I have tried to hook it up.
Can anybody help me with this? Tell me what kind of rotator I have
and what kind of controller I need? Where to get one? Any additional
info will be appreciated!
Thanx in advance and 73!
Chris
N3PDG
------------------------------
End of Ham-Equip Digest V94 #35
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