Date: Sat,  6 Nov 93 04:30:33 PST
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: Bulk
Subject: Ham-Equip Digest V93 #95
To: Ham-Equip


Ham-Equip Digest            Sat,  6 Nov 93       Volume 93 : Issue   95

Today's Topics:
                           FT-980 on MARS?
                     Help find manual for scope!
                       Microwave wireless cable
                      Mod info wanted on TM-721A
                    Plectron - where are they now?

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: 6 Nov 93 04:05:57 GMT
From: ogicse!emory!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!news.delphi.com!usenet@network.ucsd.edu
Subject: FT-980 on MARS?
To: ham-equip@ucsd.edu

Rick; I'm a collector of mod files, and I have TX mod files for the
Yaesu FT-990 and FT-890, but not a FT-980, which I have never heard of.
Are you sure you have not transposed a couple of digits?
 
--Leigh/KM6JE.

------------------------------

Date: 2 Nov 93 12:05:09 CST
From: timbuk.cray.com!hemlock.cray.com!cherry10!dadams@uunet.uu.net
Subject: Help find manual for scope!
To: ham-equip@ucsd.edu

Among the bargains I found at the Hamfest this weekend in St. Paul MN,
was the following Oscilloscope for which I now need manuals etc:

 140A  Oscilloscope   Hewlett Packard

  I don't know the age of this beast.  It is quite heavy.
  It has the following modules:

 1423A  Time Base   Hewlett Packard

 1402A  DC 20MCI6CMI  Dual Trace Amplifier  Hewlett Packard.

I don't know if it works at the moment.  I still have no power chord or
test probes.  Then I paid a total of $17.50, so if it never works it wasn't
too much of a loss, and if it does work I really have a nice find.


Can anyone tell me anything more about this unit?  How old would it be?

How can I tell what the maximum frequency it can handle is?

Am I resigned to paying several times the price of the scope for the 
test probes?  (I need 2 of them.)


Does anyone know how I can find a service manual?  Other manuals?  Help!



---
                                                ______
Sourdough and Ham  KG0IO/AE         |   |  |  
                                               |   |  |  obten comida, 
--David C. Adams    dadams@cray.com            |   |  |  y sal de aqui!
  Statistician                                  \____/
  Cray Research Inc.                            (____)
                                                .:. .
                                                . .  :.

------------------------------

Date: Wed, 3 Nov 1993 22:10:32 GMT
From: mvb.saic.com!zippy.Telcom.Arizona.EDU!CS.Arizona.EDU!noao!asuvax!gatech!howland.reston.ans.net!math.ohio-state.edu!pacific.mps.ohio-state.edu!austin.onu.edu!he-04.onu.edu!SA055@network.ucsd
Subject: Microwave wireless cable
To: ham-equip@ucsd.edu

 Does anyone out there know much about this subject?  I have a lot of 
questions, mostly becuase I just found out about wireless cable.  I wasn't 
really interested in satellite, but I know now that our area has wireless 
cable, because I've seen the little dishes.(they look like satellite, but 
they are just a bunch of horizontal metal pieces bent into the shape of a 
dish)  Anyway, I was wondering if anyone knew about this technology, how 
much a system is, if you need a descrambler, etc.

                                            Thanks!
                                            Dan

------------------------------

Date: 6 Nov 93 04:12:49 GMT
From: ogicse!uwm.edu!news.moneng.mei.com!howland.reston.ans.net!noc.near.net!news.delphi.com!usenet@network.ucsd.edu
Subject: Mod info wanted on TM-721A
To: ham-equip@ucsd.edu

Gentlemen:  I'm a compulsive collector of mod files, and I actually
have a file for the Kenwood 721A.  I have NOT tried it!  --Leigh/KM6JE.
_______________________________________________________________________
TM721A.14
-------------------------------------------------------------------------------
                    KENWOOD TM-721A WIDE BAND MOD
-------------------------------------------------------------------------------
 
To modify the 721, remove the top & bottom covers.
Remove the 2 screws on each side that hold the front panel to the main unit.
[You can just loosen the bottom 2 screws, 1 on each side don't actually remove
them.
Then remove the 2 screws in the top center & bottom center that hold the display
to the main unit (all silver screws, not the black ones).
 
Now you can swivel the panel out & down.
Look at the back of the display unit.  To the left of the Microprocessor near
the lithium batttery you will see 3 chip resistors in a pattern like this:
 
 H= chip resistor
 X= blank space
-------------------->      H X H H
 
add a jumper (or ideally a zero ohm chip resistor where the X is.
 
Hold the F key while turning the radio on.
 
The display will go from:  100 - 200 MHz on VHF
                           400 - 500 MHz on UHF
 
WARNING!!!
 
Remember to write all your frequencies down before you start because you
WILL lose them on both bands once you add the jumper even if you do not reset
with the F key.
                 RELAYED   BY...N0KGX...GENE
 
(Question by Leigh/KM6JE:  is this expanded range RX only?  Or TX and RX?)

------------------------------

Date: 5 Nov 93 19:47:22 GMT
From: ogicse!uwm.edu!linac!att!cbnewse!parnass@network.ucsd.edu
Subject: Plectron - where are they now?
To: ham-equip@ucsd.edu

I have a few dozen Plectron brand FM monitor receivers but
haven't bought anything from Plectron in 10 years.

The Plectron company has been passed around more times
than a bottle of cheap whiskey, and I've lost track of them.

Anyone know the current phone number or address of Plectron
or the company who now owns them?

They used to be located in Overton, Nebraska, but there's
no telephone listing for Plectron there anymore.

Thanks.
-- 
==============================================================================
                       Copyright 1993,  Bob Parnass, AJ9S
         AT&T Bell Laboratories  -  parnass@ih4gp.att.com - (708)979-5414

------------------------------

Date: 5 Nov 93 15:28:02 GMT
From: ogicse!uwm.edu!vixen.cso.uiuc.edu!cs.uiuc.edu!news1.oakland.edu!vela.acs.oakland.edu!prvalko@network.ucsd.edu
To: ham-equip@ucsd.edu

References <CFzDIu.4oM@srgenprp.sr.hp.com>, <1993Nov4.204630.22470@newsgate.sps.mot.com>, <CFzzpL.879@ipars.sds.com>rvalko
Subject : Re: Type Accepted ham HT's??


: So you're telling me that _my_ Motorla Saber III with 136-174 coverage, with
: the matching Motorola software allowing you to program within three
: bandsplits covering that 136-174 is illegal if I program in the HAM 
: band?
NOPE.  It is perfectly legal for a LICENCED amateur to use anything that
meets FCC specs in the AMAEUR RADIO SERVICE.

: Or, _my_ Motorola Spectra with 138-174 coverage and matching Motorola
: software that allows you to program anywhere within the band is also
: illegal if I program in the HAM band?
See above for LICENCED transmitting.

: What about the other Motorola radio's that offer the ability to be 
: programmed into HAM bands?  What about the Yaesu FTH-2070 dual-band
: commercial radio?  What about the Bendix King commercial radios?
See above, above.  Sheeze this is getting monotonous.

: Have I been wasting my money on commercial radio's?  I use my radio's
: for public safety, business, and amateur.
: -- 
OH!  You ARE licenced!  Grab a copy of Part 97 and read the rules,
again.
:-)   I'm sure your just pulling his leg, like I'm pulling yours.
73 paul wb8zjl


: Scott O'Connell - N6ZEK                UUCP: {nosc, ucsd}!crash!ipars!scotto
: Spectrum Data Services                 ARPA: crash!ipars!scotto@nosc.mil
: Carlsbad, CA                           INET: scotto@ipars.sds.com

------------------------------

End of Ham-Equip Digest V93 #95
******************************
******************************