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1994-11-14
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Date: Wed, 26 Oct 94 04:30:27 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: List
Subject: Ham-Equip Digest V94 #391
To: Ham-Equip
Ham-Equip Digest Wed, 26 Oct 94 Volume 94 : Issue 391
Today's Topics:
733 MODS INFO
>>> FOR SALE >>> THREE SECTION TELESCOPING MAST 36' AND DIAMOND X-50 2M/440 ANTENNA
Conversion of Commercial Radios
ft-207R (2 msgs)
FT530 pads? (2 msgs)
Icom
IC T21A
Info on NiMH batteries wanted...
Kenwood TH28A HT- For Sale
Ten Tec OMNI V/VI owners - HISS problem
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: Mon, 24 Oct 94 11:57:32
From: keith.knipschild@asb.com
Subject: 733 MODS INFO
BK>>>> Modifications, Undocumented Features, and Bugs for the Kenwood TM-733A.
>>>>>> Release 2.0 Updated October 1, 1994
>>>>>> ------------------------------
>>>>>> Extended RF Modifications
>>>>>> ------------------------------
>>>>>> Remove B0. (the one on the left - furthest from the green wires)
>>>>>> ONLY Removing Jumper 1 (B2) is the MARS/CAP modification.
BK>>>> The ranges after modification are as follows:
>>>>>> Tx: 136-174 410-470 <<<<<<<<<<<<<<<<<<<<<<<<<
>>>>>> Rx: 118-174 300-470 <<<<<<<<<<<<<<<<<<<<<< PLEASE MAKE NOTE: <
< NOT CORRECT !!!!! <
< SEE INFO POSTED BELOW <
<<<<<<<<<<<<<<<<<<<<<<<<<
Brad,
Thanks for the INFO !!!!!!
As I stated in my POSTING, I only cut the 2 GREEN Jumpers a while ago with the
^^^^ ^^^^^^^^^^^^^
following results:::
VHF: Original RX range: 118.000 - 173.995
New RX range: Same as original
Original TX range: 144.000 - 147.995
New TX range: 142.000 - 151.995
UHF: Original RX range: 410.000 - 469.995
New RX range: 300.000 - 469.995 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
< SEE NOTE:: <
Original TX range: 438.000 - 449.995 <<<<<<<<<<<<<<
New TX range: 420.000 - 449.995
NOW With the LATEST Mod (removing B0) I reconnected both GREEN Jumpers and
now have the REALLY EXTENDED TX Mods !!!! Thanks Alot !!!!!
<<<<<<<<<
< NOTE: <
<<<<<<<<<
*** The only thing is that the UHF Rx is not really going down to 300 MHZ
As I stated in my POSTING, Your really RECIEVING from 410 - 517 MHZ.
I found that out months ago it the GREEN Wire Mod.
Here's an example: You want to listen to 471.6625 - To recieve this you
have to tune to 354.6125 -- With that now you see
that the Magic Number is 117.050 MHz.
471.6625 Mhz << TO RECIEVE THIS
- 117.0500 Mhz (Magic Number) TUNE
-------------- TO
354.6125 Mhz <<<<<<<<<<<<<<<<<<<<<<<< THIS
What do you thing ?? Iam I right ???
Thanks for the MOD INFO !!!!!!!!!
Keith
Keith.Knipschild@asb.com
------------------------------
Date: 25 Oct 1994 15:52:17 GMT
From: johanson@ix.netcom.com (David Johanson)
Subject: >>> FOR SALE >>> THREE SECTION TELESCOPING MAST 36' AND DIAMOND X-50 2M/440 ANTENNA
>>> FOR SALE >>> THREE SECTION TELESCOPING MAST 36' AND DIAMOND X-50 2M/440 ANTENNA
THREE SECTION TELESCOPING MAST, 36', GALVANIZED, PRICE $40 + Shipping
DIAMOND X-50, 2 METER & 440 MHZ DUAL BAND ANTENNA, PRICE $80 + Shipping
David (415) 941-3444
------------------------------
Date: Tue, 25 Oct 1994 13:56:48 GMT
From: uid@ornl.gov
Subject: Conversion of Commercial Radios
In article <JOHNZ-2110941632190001@edb252e.edb.utexas.edu> JOHNZ@UTXVMS.CC.UTEXAS.EDU (John Moore) writes:
>Path: stc06.CTD.ORNL.GOV!cs.utk.edu!gatech!swrinde!cs.utexas.edu!geraldo.cc.utexas.edu!edb252e.edb.utexas.edu!user
>From: JOHNZ@UTXVMS.CC.UTEXAS.EDU (John Moore)
>Newsgroups: rec.radio.amateur.equipment
>Subject: Conversion of Commercial Radios
>Date: 21 Oct 1994 21:29:48 GMT
>Organization: UTAUSTIN
>Lines: 7
>Message-ID: <JOHNZ-2110941632190001@edb252e.edb.utexas.edu>
>NNTP-Posting-Host: edb252e.edb.utexas.edu
>Digipros,
>I see lots of commercial uhf/vhf radios at hamfests. I know that these
>(some of these?) can be converted for use on the ham bands. Is there a
>book or are there articles on commercial radio conversion?
>Thanks...kb5viw
DONT KNOW ABOUT BOOKS OR ARTICLES, BUT MY EXPERIENCE IS TO BUY YOURSELF A
CHEAP NEW AMATEUR RADIO. THE COST OF CRYSTAL ELEMENTS AND OTHER PARTS FOR
COMMERICAL RIGS CAN AD UP TO THE COST OF NEW AMATEUR RADIO, UNLESS YOU WANT
THE CHALLANGE OF DOING IT. SHOP WISELY
KB4TEP
------------------------------
Date: 25 Oct 94 11:49:56 GMT
From: HOFFMAA%PEWTER@leia.polaroid.COM (TONY HOFFMANN KD1SF PAGE #468-2279)
Subject: ft-207R
Hi, does anybody have any info on a Yaesu FT-207R I picked one up
at a flea mkt. without manual. can anybody tell me what the slide switch
on the bottom that says (5-up) means. also the display seems to bear no
relevence to what freq. is put in; same with the offset. one more thing
does this radio have a back up bat. for memory.
Any other info such as features, power output, etc. would be appreciated.
tnx "hoffmaa%pewter@leia.polaroid.com"
------------------------------
Date: Tue, 25 Oct 1994 14:53:54 -0500
From: kleite@gtec3.ndhm.gtegsc.com (Keith J. Leite)
Subject: ft-207R
In article <199410251151.EAA23391@ucsd.edu>,
HOFFMAA%PEWTER@leia.polaroid.COM (TONY HOFFMANN KD1SF PAGE #468-2279)
wrote:
> Hi, does anybody have any info on a Yaesu FT-207R I picked one up
> at a flea mkt. without manual. can anybody tell me what the slide switch
> on the bottom that says (5-up) means. also the display seems to bear no
> relevence to what freq. is put in; same with the offset. one more thing
> does this radio have a back up bat. for memory.
> Any other info such as features, power output, etc. would be
appreciated.
> tnx "hoffmaa%pewter@leia.polaroid.com"
Hi Tony,
I have one of these radio's I bought new for $300.00 back in 1982. The
answer
to your first question is the 5 up means 5kc's, which means if you were at
145.150,the 5up switch would make it 145.155.
The display will read like this say you were on 145.150 Mhz, the display will
be 5.15
No this radio does not have a backup battery for the memory (bummer) Oh well
at the time I bought mine it was the best thing on the market ...hehe, Gee
how things change. Hope this helps you out
73 de Keith / AA1JF
Keith J. Leite Email: kleite@gtec3.ndhm.gtegsc.com
GTE Governement Systems
IT/Network Operations
400 John Quincy Adams Rd.
Taunton, MA 02780 USA
"THROUGH THE GATEWAY; OFF THE REPEATER; OVER THE T-1
BACKBONE... NOTHING BUT NET !!!"
------------------------------
Date: Tue, 25 Oct 1994 10:47:07 GMT
From: rjager@inter.NL.net (R. Jager)
Subject: FT530 pads?
The Yaesu ft530 handset has 16 internal solder-pads. Removing #13
enlarges the frequency ranges. Where are the other pads used for? I
imaging it is used for the default freq shifts and so on. Who has a
total overview of the functionality of all these pads??
TNX, Ruurd, PE1DXQ.
--
-- Bloemenveiling Holland -- FLOWERING THE WORLD -- Flower Auction Holland --
using the NLnet Internet Services: E-mail: ima@bvh.nl or R.Jager@bvh.nl
-----------------------------------------------------------------------------
------------------------------
Date: 25 Oct 1994 11:58:28 GMT
From: drossier@di.epfl.ch (Daniel Rossier)
Subject: FT530 pads?
I would just say something about Yaesu FT-530. In fact, the 16 internal solder-pads
are not always present for all models. On my rig, I can not remove it because
there is no pad.
D. Rossier, HB9UFT
------------------------------
Date: Sun, 23 Oct 94 22:51:41 EDT
From: overlord@tnce.com (Overlord)
Subject: Icom
I just bought an Icom IC-2SAT 2m HT. I'm interested in any experience anyone
has had with these or any mods for it. I am also looking for a service manual
Thanks!
73's
~Overlord~
_______________________________________________________
------------------------------
Date: 24 Oct 1994 22:59:02 GMT
From: jholloway@academic.csubak.edu
Subject: IC T21A
I have had my IC T21A for a few months and did the ext. Receive
keyboard mod on it. However it will not let me transmit i.e. Whisper mode
or cross band operation unless I am in the 440-450 range. 437 mhz is
still in the HAM range and I want to be able to recieve on that and
transmit on 2 m. Does anyone know of a mod for this. The ext. transmit
mod might do it but I don't know that one either.
KE6EBA
Joe
------------------------------
Date: Tue, 25 Oct 1994 13:48:09 GMT
From: uid@ornl.gov
Subject: Info on NiMH batteries wanted...
In article <1994Oct23.233747.10584@ultb.isc.rit.edu> bad1679@ultb.isc.rit.edu (B.A. Doehner) writes:
>Newsgroups: rec.radio.amateur.equipment
>Path: stc06.CTD.ORNL.GOV!cs.utk.edu!emory!europa.eng.gtefsd.com!howland.reston.ans.net!pipex!uunet!psinntp!isc-newsserver!ultb!bad1679
>From: bad1679@ultb.isc.rit.edu (B.A. Doehner)
>Subject: Info on NiMH batteries wanted...
>Message-ID: <1994Oct23.233747.10584@ultb.isc.rit.edu>
>Sender: news@ultb.isc.rit.edu (USENET News System)
>Nntp-Posting-Host: ultb-gw.isc.rit.edu
>Organization: Rochester Institute of Technology
>Distribution: na
>Date: Sun, 23 Oct 1994 23:37:47 GMT
>Lines: 18
>Hi All,
>I would like to add a rechargeable battery to the inside of my A&A QRP
>rig and replace the insert of my Kenwood PB-21 pack with new batteries.
>I would like to try using Nickel Metal Hydrite (sp?) or rechargeable
>Lithium batteries instead of NiCad's because of their higher energy
>density. However, I have been unable to find a source of either Nickel
>Metal Hydrite or rechargeable Lithium batteries.
>Does anyone know of a company that will sell either Nickel Metal Hydrite
>or rechargeable Lithium batteries?
>If so, please send me their address and/or phone number..
>THanks...
>Bernie Doehner nu1s/9
THE NICKEL METAL HYDRIDE BATTERIES I KNOW HAVE A HIGH SELF DISCHARGE RATE.
THEY CAN COMPLETELY SELF DISCHARGE IN APP. 15 DAYS. YOU MIGHT WANT TO CHECK
THIS OUT.
KB4TEP
------------------------------
Date: Tue, 25 Oct 1994 11:39:48 EDT
From: mellerso@uga.cc.uga.edu (Mike Ellerson)
Subject: Kenwood TH28A HT- For Sale
For Sale :
TH28A- HT
Stock Battery
Charger
Original Manuals and Box
Soft Case
MFJ - Microphone
This rig is less than a year old and in excellent condition. It has been kept
in the softcase, so it is excellent physical and electrical condition.
Features 2M Xmit and 440 Receive, Extended Receive, Aircraft Receive,
Alphanumeric display, etc., etc. This rig has not been modified. This has been
an excellent HT for me. The reason for selling is to get a dual band rig.
Asking $250.00 for all above.
If interested, contact me via email - mellerso@uga.cc.uga.edu
Thanks in advance
73
------------------------------
Date: Tue, 25 Oct 1994 13:48:27 GMT
From: dnewkirk@arrl.org (Dave Newkirk (WJ1Z))
Subject: Ten Tec OMNI V/VI owners - HISS problem
Scott Richard Rosenfeld (ham@wam.umd.edu) wrote:
[deletions]
: To all devotees of the OMNI V/VI series...
: Best radio I have ever had the pleasure of listening to. But it's got
: this really annoying HISS, that's kinda high-pitched, right smack
: dab in the middle of the audible range that really gets in the way
: of copying that weak DX.
[deletions]
: All recent mods have been done by Ten-Tec. They should have improved
: the hiss problem somewhat, although I never heard the radio before
: the mods were done.
Okay, but if your radio is an OMNI V, do be sure they did the one mentioned
in *QST*'s OMNI V review (Nov 1990 *QST*, p 33) under the Rough Edges
subhead. That one, "incorporated into all production units since the spring
of 1990," bears directly on just the type of hiss you mention.
That said, any radio that has wideband IF amplifiers after all of its
signal-width selectivity and includes no audio rolloff is going to serve up
some wideband IF hiss. My little old TS-130V, all of the signal-width
selectivity of which comes from a single 8830-kHz filter, exemplifies this
exactly. A bit of audio rolloff can help; a "tail end" IF filter"--after the
AGC-detector pickoff point but before the product detector--is a good
solution, issues of complexity, filter loss and group delay aside. An
image-reject product detector is another neat idea.
Regards,
David Newkirk, WJ1Z
Senior Assistant Technical Editor
ARRL HQ
------------------------------
Date: 25 Oct 1994 14:29:08 GMT
From: galen@picea.CNR.ColoState.EDU (Galen Watts)
References<384fjs$3pn@hp-col.col.hp.com> <Cy1q41.LJ4@utnetw.utoledo.edu>, <38iii5$a8f@hp-col.col.hp.com>
Subject: Re: Alinco 6M FM
In article <38iii5$a8f@hp-col.col.hp.com> bobw@col.hp.com (Bob Witte) writes:
> The original comment that I made concerning a recently introduced
> 10Watt 6M FM rig was basically meant to say "gee, the state of the
> art is such that providing something greater than 10 watts at 50 MHz
> should not be a problem" (i.e. it should not increase the cost of
> the radio substantially).
The state of the art is there, but the economics aren't. 6m is a 'born
again' band, and it's gonna be a couple years before the manufacturers
figure out that maybe someone would want 50w on 50MHz at the touch of a
button. I remember some great 2m rigs that only had 10w, now 45-50w is
the norm, and Icom has the 736, 100w on 6m.
I'm currently working on a 200w amp, 10w in for just such a radio, my
Icom 726. I've found that for Es SSB, you really need at least 50w or
be working from a rare grid ;-). The local 6m repeater is behind quite
a few hills from me, I don't expext to use it unless I have a 100w or so.
>
> I guess I didn't realize running 30 watts was considered an irrational
> lust for power these days :-)
>
You just want something to keep your feet warm this winter ;-)
Galen, KF0YJ
------------------------------
Date: 25 Oct 1994 09:19:01 GMT
From: bobw@col.hp.com (Bob Witte)
References<37tr88$292@sulawesi.lerc.nasa.gov> <782593738snz@g8sjp.demon.co.uk>,<384fjs$3pn@hp-col.col.hp.com>, <Cy1q41.LJ4@utnetw.utoledo.edu>
Subject: Re: Alinco 6M FM
pouelle@uoft02.utoledo.edu wrote:
: Ok all you more watts the better people - relax and engage your brains.
: I have run 5 watts or less with a 5/8 wave ground plane on 2m with good
: results - 40 miles regularly into a decent repeater, and it gets out well
: enough for simplex - especially when I use a 5 element beam. As for 6m,
: a friend worked New Mexico on < 3W ssb during a band opening. I would
: suspect that 10W for 6m FM would be useable for modest local communication
: when the band is not open and overkill (sometimes) when it is. Remember
: it is easier to increase your range with a good antenna than with a power
: amp. QST recently had a really good article about powering your way to an
: s-9 signal - it's just not worth it!
The original comment that I made concerning a recently introduced
10Watt 6M FM rig was basically meant to say "gee, the state of the
art is such that providing something greater than 10 watts at 50 MHz
should not be a problem" (i.e. it should not increase the cost of
the radio substantially).
Yes, gain antennas are very valuable. You can *even* use them when you
are running greater than 10 watts and radiate an even stronger signal.
Yes, I can hit the local repeater with less than 10 watts. Yes, there
are QSOs to be made on 6M with less than 10W.
I guess I didn't realize running 30 watts was considered an irrational
lust for power these days :-)
Bob Witte / bobw@col.hp.com / Hewlett Packard / PMO / KB0CY / (719) 590-3230
------------------------------
Date: 25 Oct 1994 09:05:35 GMT
From: bobw@col.hp.com (Bob Witte)
References<384fjs$3pn@hp-col.col.hp.com> <387aoj$9ab@eram.esi.com.au>, <782812214snz@g8sjp.demon.co.uk>
Subject: Re: Alinco 6M FM
Iain Philipps (ip@g8sjp.demon.co.uk) wrote:
: S'funny how different folks see different things. What's the difference, may
: I ask, between 10 watts and 30 (or even 50) watts? Lemmeseenow. 1/2 to 5/6
: of one 'S' point?. Ahh - I know what it is - it's the inherent non-linearity
: of most guess-meters which move a whole inch when presented with a 3dB change
: in signal. That'll explain it.
The difference is between 10 and 50 watts is a ratio of 5 to 1,
or 10 log (5) = 7 dB. Surely there are contacts that this 7 dB
will make no difference...surely there are contacts where this
7 dB will make a difference.
It is funny how people see things differently. To me, a dB is a dB
is a dB. (Or as another poster points out, sometimes a dB is
more than a dB with FM.)
Bob Witte / bobw@col.hp.com / Hewlett Packard / PMO / KB0CY / (719) 590-3230
------------------------------
Date: Tue, 25 Oct 1994 12:30:35 GMT
From: junger@rsg1.er.usgs.gov (John Unger)
References<384693$gd3@hplvec.lvld.hp.com> <dgfCxz7G2.Iso@netcom.com>, <38h5av$379@hplvec.lvld.hp.com>
Subject: Re: Amateur Radio Trader
In article <38h5av$379@hplvec.lvld.hp.com>,
Scott Turner <scott@lvld.hp.com> wrote:
>David Feldman (dgf@netcom.com) wrote:
> In article <384693$gd3@hplvec.lvld.hp.com> scott@lvld.hp.com (Scott Turner) writes:
>
>>The organization is, I think, its greatest strength and advantage over
>>the Ham Trader Yellow Sheets. It's much bigger than the Yellow Sheets,
>
> I'm not entirely certain the organization is an unqualified advantage;
> people often list several unrelated things in one ad (for example, a
> Drake and a Ten-Tec), and choose one classification. This might cause
> something to be overlooked. I have been searching forever for an ICOM
When I was looking thru a complimentary copy of the A. R. T. that I
received a while ago, I noticed that at least some of the adverts that
listed two different manufacturers' products were listed twice. For
example under both Drake and Ten-Tec headings. I'm not sure if this
is policy or people actually paying for two ads....
73 - John, W3GOI
------------------------------
End of Ham-Equip Digest V94 #391
******************************