Date: Wed, 26 Jan 94 10:07:03 PST
From: Info-Hams Mailing List and Newsgroup <info-hams@ucsd.edu>
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Subject: Info-Hams Digest V94 #77
To: Info-Hams
Info-Hams Digest Wed, 26 Jan 94 Volume 94 : Issue 77
Today's Topics:
Collins Tubesters?
Computing antenna coverage
cw test
Engine Noise
FCC RF Spectrum Allocation?
Icom tuning dial
IOTA frequencies wanted
Jesus Freqs!
Kenwood radio software
Novice/Tech test maker?
RAMSEY FX TRANSCEIVER
Send Replies or notes for publication to: <Info-Hams@UCSD.Edu>
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We trust that readers are intelligent enough to realize that all text
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----------------------------------------------------------------------
Date: Wed, 26 Jan 1994 05:36:03 GMT
From: newshub.nosc.mil!crash!nctams1!pnet16!tjenkins@network.ucsd.edu
Subject: Collins Tubesters?
To: info-hams@ucsd.edu
Anyone know where I can get a line on the solid state Tubesters for the
Collins 32/75 line? Thanks in advance.
--Tom
UUCP: nctams1.navy.mil!pnet16!tjenkins
INET: tjenkins@pnet16.cts.com
------------------------------
Date: 25 Jan 1994 22:01:01 GMT
From: news.cstar.andersen.com!news.acns.nwu.edu!casbah.acns.nwu.edu!rdewan@uunet.uu.net
Subject: Computing antenna coverage
To: info-hams@ucsd.edu
In article <CK7B0q.JH3@world.std.com>,
Matthew B Cravit <cravit@world.std.com> wrote:
>A friend of mine asked me this question, and I do not know the answer.
>If one has an antenna (say a vertical or something, as opposed to a
>beam) that is x feet above ground level, how does one compute the
>approximate coverage area of that antenna (in square miles)? For
>example, see the following diagram
> _
> | |
> | |
> | |
> | _|_
> |x | |
> | | |
> | | | Tower
> | | |
> | | |
> | | |
> ----------------------------------------Ground---------
>
>If we assume that the distance x is, say, 200 feet and that the ground
>around the antenna is relatively flat, is there a way to estimate the
>area of coverage for that antenna?
Approximately, for Line-of-Sight propagation:
d = sqrt(2h)
where d is the maximum distance (radius if the area is flat) in miles
h is the height above average terrain in feet.
Rajiv
aa9ch
r-dewan@nwu.edu
------------------------------
Date: Mon, 24 Jan 1994 16:10:37 CST
From: ucsnews!sol.ctr.columbia.edu!howland.reston.ans.net!vixen.cso.uiuc.edu!news.eecs.uic.edu!uicvm.uic.edu!u12566@network.ucsd.edu
Subject: cw test
To: info-hams@ucsd.edu
OK, got my tech and passed the general theory and will try to go get
5 wpm next week.
How does the test go? is it the standard one-sided QSO I've been hearing
on MORSE TUTOR? Is there a standard format, do do the VE's get to
do it hoiwever they want?
------------------------------
Date: Mon, 24 Jan 1994 22:33:03 GMT
From: pacbell.com!uop!lll-winken.llnl.gov!sol.ctr.columbia.edu!usc!sdd.hp.com!hpscit.sc.hp.com!hplextra!hpcss01!hpcuhe!donh@network.ucsd.edu
Subject: Engine Noise
To: info-hams@ucsd.edu
You didn't say if the plugs you put in have a built in resistor. It
sounds as if the plugs you removed did have the resistors built in.
You can usually tell if the plugs are resistive if they have an 'R'
somewhere in the part number. Your vehicle has resistive wiring but
that alone is obviously not enough!
***************************************************************************
* The opinions expressed are mine, and mine alone *
* *
* - You can lead a horse to water, but a pencil must be lead - *
* *
* Cessna 172A Driver, N7770T @ PAO - - WB6LPJ OM *
* KD6QQW XYL *
***************************************************************************
------------------------------
Date: 25 Jan 1994 13:07:58 -0500
From: digex.net!access1!rjk@uunet.uu.net
Subject: FCC RF Spectrum Allocation?
To: info-hams@ucsd.edu
I don't have handy at the moment where on the net you might find this,
but the FCC's spectrum allocations are set forth in Part 2 of its Rules.
You need Subpart B of Part 2 of Title 47 of the Code of Federal
Regulations. In legalese (not that the foregoing was actually English)
that is "47 C.F.R. sections 2.100 - 2.108 and it is called the
"Allocation, Assignment, and Use of Radio Frequencies," more commonly
called, the Table of Allocations.
I recall seeing that there is a Gopher site somewhere that is
experimentally offering access to at least some portions of CFR, but
unfortunately I don't have the reference handy at the moment.
Good luck.
--
Bob Keller (KY3R) rjk@telcomlaw.win.net Tel 301.229.5208 Fax 301.229.6875
------------------------------
Date: Mon, 24 Jan 1994 13:34:04 GMT
From: agate!howland.reston.ans.net!pipex!sunic!psinntp!psinntp!laidbak!tellab5!jwa@network.ucsd.edu
Subject: Icom tuning dial
To: info-hams@ucsd.edu
I purchased an Icom 745 about two weeks ago.
After connecting it to my Kenwood PS-50 power
supply (they are compatable), I noticed, that
the VFO dial only tuned the radio about 100 Hz
per 5 revolutions when the TS button was in.
My Icom R71 moved about 10 kHz per revolution.
I came to the conclusion that there was something
wrong with the rotary sensor unit.
Icom radios use a rotary sensor to detect the rotation
of the tuning knob. The sensor is a phonolic board that
has switch contacts plated on the surface. It also has
a rotor with a metal wiper.
The wiper is made up of very fine wires that are smaller than
human hairs. The rotor moves along three plated switch tracks
on a phonolic board. One track is a common ring that connects
to the center solder tab on the board. The inner and outer
tracks have alternating squares and connect to the outer pins.
When the wiper moves along the tracks it makes and brakes
the connection between the inner and outer rings. The middle
ring connects to the + 5 volt supply.
I called Icom and the replacement cost $50.00!! I decided it
would be cheaper to repair the part. Also, in order to change
it, the front panel will have to be removed.
I tried contact cleaner and WD-40 but it didn't work. The part
is simply worn out. After connecting a scope to the outer contacts
I noticed that there was a considerable amount of contact bounce.
The outer pins of the rotary dial is connected to the micro-
processor and the inner pin connects to +5 volts. The contact
bounce is probably confusing the uP. I connected a .001
capacitor to each outer lead and the other end of each capacitor
to the inner lead. The bounce was cleaned up and tuning knob
works fine!
I saved my self $50.00 and the aggravation of removing the
radio's front panel. I'm shure, sooner or later, it will
ware out completely but I did buy some time.
---
Jack Albert WA9FVP Fellow Radio Hacker
Tele (708) 378-6201
Tellabs Operations, Inc. FAX (708) 378-4590
1000 Remington Blvd. jwa@tellabs.com
Bolingbrook, IL 60440
*
* *
* * *
* * * * * * *
* * *
* *
*
THE BOWTIE FILTER
------------------------------
Date: Sun, 23 Jan 1994 03:26:59 GMT
From: qualcomm.com!vixen.cso.uiuc.edu!howland.reston.ans.net!news.intercon.com!psinntp!gdstech!gdstech!bat@network.ucsd.edu
Subject: IOTA frequencies wanted
To: info-hams@ucsd.edu
The IOTA (Islands On The Air) stations try to congregate on
these frequencies: 14.260, 21.260, 28.460. But, when there is already
traffic there, they would move up or down. So, tune around that area.
I don't know the 40 and 80 IOTA frequencies. -pat
--
*-----------------------------------------------------------*
* Pat Masterson D12-25 | KE2LJ@KC2FD *
* Grumman Data Systems | 516-346-6316. *
* Bethpage, NY 11746 | bat@gdstech.grumman.com *
------------------------------
Date: Sun, 23 Jan 1994 03:18:06 GMT
From: qualcomm.com!vixen.cso.uiuc.edu!howland.reston.ans.net!news.intercon.com!psinntp!gdstech!gdstech!bat@network.ucsd.edu
Subject: Jesus Freqs!
To: info-hams@ucsd.edu
Walt, I agree with you 100%. This stuff shouldnt appear in every
newsgroup on the net. But, let's not fall into the trap of thinking
that the mutant who made the post is actually going to come back
here and read your replies. He's already gotten yelled at by
his sysadmin, and hundreds (perhaps thousands) of direct emails
from his furious fans. Let's move on to more important issues.
Can a nocoder take his HT on an airplane if the battery was
left on a concrete floor?
--
*-----------------------------------------------------------*
* Pat Masterson D12-25 | KE2LJ@KC2FD *
* Grumman Data Systems | 516-346-6316. *
* Bethpage, NY 11746 | bat@gdstech.grumman.com *
------------------------------
Date: 22 Jan 94 16:59:58 -0600
From: ddsw1!chigate!radiohobby!darren.leno@uunet.uu.net
Subject: Kenwood radio software
To: info-hams@ucsd.edu
The following Kenwood files are available on RADIO HOBBY ONLINE bbs at
708-238-1901, 14,400 v32bis-300 baud. Full dl access to 1st time callers.
3RD.ZIP Kenwood TS-440 control pgm. Will opr w/TNC
440_4.ZIP Kenwood TS-440 Control Program
44SPL101.ZIP TS-400 Control Program, with search ability
4MS200.ZIP Tandy 100 controls Kenwood TS-440S
680MODS.TXT
680MODS.ZIP Kenwood TS-680 Mod
732INFO.ZIP Mods for the Kenwood TM-732a
940SET.ARJ Changes forwarding frequency under computer control in HF
RLI-BBS network. Choose any frequency for forwarding. For TS-
940 or TS-790. Sup
94SPOIL.ZIP Control program for Kenwood TS-940S
ALLBULL.ZIP All Kenwood service bulletins
KEN450.ZIP Complete computer control of TS-450
KEN790.ZIP Complete computer control of TS-790
KEN850.ZIP Complete computer control of TS-850
KEN950.ZIP Complete computer control of TS-950
KENCON.ZIP Kenwood 440 comp cntrl. Great for handicap
KENWOOD.ZIP Kenwood radio control program
KENWOODC.ZIP
KEN_MODS.ZIP Various modifications for Kenwood
KMIJ3_11.ZIP
KNWDMOD.ZIP Official list of Kenwood mods
KNWDSTUF.ZIP
MODS.ZIP Mods for Kenwood, Yaesu & Icom radios
R-5000.ZIP Kenwood mods for R-5000
RADMOD.ZIP Mods for Kenwood and Icom radios.
RIG-EQF1.ZIP Computer control for most Kenwood radios
RIGEQF.ZIP Control Kenwood rigs via computer
RIG_EQF.ZIP Front end program for the Kenwwood computer interface
TH28-48.ZIP TH-228 and TH-48 Secret Functions Manual by PE1ACG
TH77AMOD.TXT Modifications for Kenwood TH77a dual band handheld.
TH78E.LZH Secret kenwood functions by FC1JSO
TM732A.MOD Modifications for the Kenwood TM-732a
TM741A.ZIP Modifications for Kenwood TM741A
TS-440S.ZIP Controller program for TS-440S
TS-50QRP.LZH Reduce Kenwood TS-50 power to QRP standards by WA6ERB
TS140S-1.TXT
TS140S-2.TXT
TS140S-3.TXT
TS2400.TXT
TS430-1.TXT
TS430S-2.TXT
TS430S-3.TXT
TS430S-4.TXT
TS430S-5.TXT
TS430S-6.TXT
TS440.TXT
TS440S-1.TXT
TS440S-2.TXT
TS440S-3.TXT
TS440S-4.TXT
TS440S-5.TXT
TS440S-6.TXT
TS440S-7.TXT
TS440S-8.TXT
TS440S-9.TXT
TS440S-A.TXT
TS440S-B.TXT
TS440S-C.TXT
TS440S-D.TXT
TS440S-E.TXT
TS440S-F.TXT
TS440S-G.TXT
TS50XMT.MOD All band transmit modification for TS-50 mobile HF transceiver.
TS530.TXT
TS680-1.TXT
TS680-2.TXT
TS680.TXT
TS690PAK.LZH
TS711.TXT
TS790-1.TXT
TS790-2.TXT
TS790.TXT
TS820.TXT
TS830-1.TXT
TS830-2.TXT
TS830.TXT
TS830S.TXT
TS850.ZIP Several Modifications, including all band TX MOD. for KENWOOD TS
850 HF Radio.
TS850KAM.LZH
TS930-1.TXT
TS930-2.TXT
TS930.TXT
TS940-1.TXT
TS940-2.TXT
TS940-3.TXT
TS940-4.TXT
TS940-5.TXT
TS940-6.TXT
TS940-7.TXT
TS940-8.TXT
TS940-9.TXT
TS940.TXT
TS_850S.ZIP Computer control of the Kenwood TS-850S
VFOTRAK.ZIP Amateur Radio: Lock VFO B T VFO A on Kenwood radios
------------------------------
Date: Mon, 24 Jan 94 16:54:17 CST
From: ucsnews!sol.ctr.columbia.edu!howland.reston.ans.net!spool.mu.edu!news.clark.edu!netnews.nwnet.net!ns1.nodak.edu!news.uoknor.edu!chris%uoknor.edu@network.ucsd.edu
Subject: Novice/Tech test maker?
To: info-hams@ucsd.edu
I'm looking for a program to make up tests for the no-code tech test
(novice + tech q-pool) to run on an IBM clone.
Autoexam does this, but the only version I've found (SIMTEL mirrors)
still has the old question pool. I HAVE the new question pool as text,
but it is no simple matter fudging it for Autoexam.
Oh, yeah, I need it in about 2 hours! Well, I can give it to the students
next week, but I'd like to have it for tonight.
Thanks,
Jud
(This file must be converted with BinHex 4.0)
:#Ne*6P9&9#j658F!58*02dP#66m!N!3"Y3#3",D')!d++bf34#X0#R`J5R9N)%&
SCA*Z)%Y$09**)*!05@jdCA*ZCA3k)'TKD'9bEN"RC@pSG@)ZCf0Z,R9[Dfj[FLj
PC(8JI!d+I#"(C@pXEfGj)#BJ4f9[F'KjFfPMFb#3#%*TG'jPG$SJDQ&SCA*Z3(9
[DfGMELjLDA4ZCA3JN!Ym$3Tm)&9ZDACPFR0TG(NJEfBJ6fYXB@K[E@%J)#*2F'P
ZD@pZFb"PH("bCA0cC@3JD'9bC5"bC@CXC@0d)(4SC5"PER4TFQ9m$3Tm)%j[FQe
KEL`J6dXJ)$Fc-$%j)*!)9@jTGQ9bFfPdH5`JD@iJEfjP)'0[ERCPEQPPER3JE'p
MBA4TEfiZ)L!JI!d++bf34#X0#Jd+%ld!!!:
+--------------------------------------------------------------------+
| Jud Ahern KC5RI Internet: jahern@geohub.gcn.uoknor.edu |
| Geology & Geophysics Bitnet: jahern@uokgcn.bitnet |
| University of Oklahoma "Opinions expressed here reflect the entire|
| Norman, OK 73019 University, in one convenient location." |
+--------------------------------------------------------------------+
------------------------------
Date: 24 Jan 94 09:43:30 GMT
From: netcomsv!netcomsv!cruzio!comix!jeffl@decwrl.dec.com
Subject: RAMSEY FX TRANSCEIVER
To: info-hams@ucsd.edu
In article <9401230124.A9637wk@support.com> steven.rosenberg@support.com writes:
>If this is the case, shouldn't Ramsay's ads lead off with the following
>words in big letters:
>DO NOT USE THIS AS YOUR PRIMARY RADIO. ONLY PURCHASE THIS KIT IF YOU
>PRIZE THE THRILL OF CONSTRUCTION FAR ABOVE ANY PRACTICAL USE OF SAID
>EQUIPMENT.
>On the contrary, I think Ramsay is trying to push these kits to people
>who "can't afford" a pre-made Japanese radio. And that is a travesty.
>Steven Rosenberg, KC6FYL
Heh-heh. I doubt that the thrill of construction would be attempted
unless one were reasonably certain of the outcome. One of the major
problems with the current crop of kit manufacturers is that they do
NOT offer an assembled and tested version as Heathkit did. I'm sure
every customer wonders whether the kit has something wrong that would
make the sale of the assembled unit difficult. The answer is that
the typical current product is machine assembled and that the technology
of the human assembled kits and the machine assembled Japanese radios
are radically different. Pretend that you were given all the parts,
pieces, and docs necessary to assemble your favorite mobile radio.
Lots of surface mount parts, miniature connectors, flex boards,
fragile LCD displays, and sub-min screws. I could probably assemble
it (because I've built products as bad), but suspect that the average
ham would find it impossible. So the kit manufacturer uses technology
where the builder has at least a chance of success.
There was also some question of the type of test equipment required.
If you know what you're doing, nothing more than a watts-guesser,
voltmeter, oscilloscope, and another radio is needed. Most of the
tuned circuits can be peaked instead of swept. A known weak on
the air signal will suffice for the receiver. A scanner with
a discriminator output can be used to set the transmitter frequency.
The discriminator audio (not the speaker audio) from the scanner
can be used to set the tx deviation against a known transmitter.
A sweep generator, spectrum analyzer, and a service monitor are
nice, but not necessary.
Where I see the Ramsey kits are from builders that want me to
either "clean it up" or "make it work". Usually the problem is
creative assembly, sloppy soldering, or mechanical (case) problems.
I've helped out with 3 vhf kits and know about 2 others.
There is an interesting difference between the builders and
what we used to call the "appliance operators". Every once in
a while, I drag my Cushman CE-6 service monitor to the repeater
site and call out tx frequency and deviation for everyone checking
into the local net. I've noticed that the builders tend to
take my numbers seriously while the others pretend that there
is no problem. (I have a standing offer to set the mic gain, deviation,
and tx frequency on anything a club member can drag into the office.)
An amazing number of operators literally don't care what they sound
like on the air and expect everyone to tolerate their over-deviation,
buzz, alternator whine, and distortion. Yech.
--
# Jeff Liebermann Box 272 1540 Jackson Ave Ben Lomond CA 95005
# 408.336.2558 voice wb6ssy@ki6eh.#nocal.ca.usa wb6ssy.ampr.org [44.4.18.10]
# 408.699.0483 digital_pager 73557,2074 cis [don't]
# jeffl@comix.santa-cruz.ca.us scruz.ucsc.edu!comix!jeffl
------------------------------
End of Info-Hams Digest V94 #77
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