mla2500 help!

Wed Feb 28 08:10:57 EST 1996

The primary path for VHF signals is through the resistor. The primary path
for HF signals is through the coil. If you want to supress HF oscillations
nichrome is great. If you want to supress VHF parasitics, work on the path
through the resistor.

Your MLA will be fine with carbon non-inductive resistors, but put a grid
trip circuit in it. Excessive drive and grid current (even for a few seconds)
is what kills the grids in that amp.

73 Tom

>From jfeustle at UOFT02.UTOLEDO.EDU (jfeustle)  Wed Feb 28 13:48:30 1996
From: jfeustle at UOFT02.UTOLEDO.EDU (jfeustle) (jfeustle)
Date: Wed, 28 Feb 1996 08:48:30 -0500 (EST)
Subject: Seemingly endless CQing
Message-ID: <01I1QOHQO5HO006117 at UOFT02.UTOLEDO.EDU>

Having pulled a number of "garbage" shifts (Saturday and Sunday mornings) at
WD9INF I'd like to offer that the CQing is far from "endless" in my
experience. Competitors will hear us CQing, at least I hope they will, but
at 10 in the morning it is highly doubtful that they will hear those
stations close by to us that DO--emphasis mine--come back to our CQs.
Northwest Ohio and southeast Michigan are boring places, so lots of people
get up late 'cause there ain't a whole heck of a lot of things to do. Since
the final score is related to the total number of Qs, and as this is a
COMPETITIVE event, why put a clamp on those ambitious enough to go for every
QSO they can get? It doesn't make sense.

Now, suppose one of the sponsors bites on this idea, and in my mind it's an
idea that bites. Who enforces the rule? You can't have real rules without
some degree of enforcement to give them credibility. I can just hear it now:
"This is your eleventh (thirteenth, seventy-fifth?) QSO on this frequency
OM...." By whose count do we go? How many witnesses (witlesses?)do we need
to disqualify people who do 10.5 CQs, or 11? Ah, enforcement, that lovely
word. I may not be able to compete with you, so I'll just try to reduce your
competitive advantage. 

I mean no disrespect to Tree (no undocumented features in my next copy of
TR-Log, please), but the suggestion of limitations like this has all the
flavor of sour grapes. 

Joe Feustle, N8AAT

-------------------------------------------------
Joseph A. Feustle, Jr.
The University of Toledo    

jfeustle at uoft02.utoledo.edu
-------------------------------------------------

>From i4ufh at contest.dsnet.it (Fabio)  Wed Feb 28 13:47:58 1996
From: i4ufh at contest.dsnet.it (Fabio) (Fabio)
Date: Wed, 28 Feb 1996 14:47:58 +0100
Subject: ARRL 96 IR4T Activity
Message-ID: <9602281347.AA04761 at maggiore.dsnet.it>

-------------------------------------------------------------------------
              ARRL SSB 1996 Contest         IR4T M/S Contest Activity
-------------------------------------------------------------------------

We will be active during the WAEDC SSB Contest in the next weekend in a  
M/S category. All band will be checked, also 10m, last year N2RM moved us
on 10m, and with big surprise we have worked in a dead band more than 100
USA station with the antennas beamed to YV/P4 area ...

This year seem to be more difficult, but we will try a couple of time for 
about 15 minutes each time around 15.00 z and 17.00 z 28.480 Mhz each day.

If you think that our signal in rasonable good on 15 m, try to ask us QSY
on 10m, we will try ......

73 de Fabio I4UFH on of IR4T, IG9R

MC2 Contest Club Italy

See you in the  Contest................ 

e-mail i4ufh at contest.dsnet.it

>From John Brosnahan <broz at csn.net>  Wed Feb 28 14:17:10 1996
From: John Brosnahan <broz at csn.net> (John Brosnahan)
Date: Wed, 28 Feb 1996 07:17:10 -0700
Subject: Tuner Thread
Message-ID: <199602281417.HAA06210 at lynx.csn.net>

>My own opinion is the best QRO tuner is an old Johnson KW box. Too bad
>there's nothing like that around any more, but that would be a $3000  tuner
>now!

Tom, I have to disagree with you on this one.  I had three of the Johnson KW 
Matchboxes and all performed with the same limitations.

1)  They can't handle 1500 watts on 10 and 15 meters (and this was to a nominal
50 ohm load).  Late in a contest with high duty cycle CQing to a nominal
Yagi they 
will unsolder their bandswitch connections.  (Why a tuner with a Yagi?  When
operating with multiple antennas and switching between them or combining them
it is very handy to have all of them look like a precise 50 ohm load so any
one or combination of any presents the same load to the amplifier, so the amp
 is not over or under loaded in some conditions.)

2)  Tuning range on 80 meters is minimal.  Cut a dipole for 3.775 MHz and the
tuner may or may not match it at 3.5 MHz--depending on the feedline
length.  Indicating that its range of reactance "removal" is pretty limited.

3)  No 160 meter coverage.

On the plus side: they do make excellent preselector filters in a multi/multi
situation, and for loads that they can match on 40 and 20 meters they do
quite well.

One ham's opinion!  73  John  W0UN

(Did I mention that the VSWR meter is a V (as in voltage) meter that needs to
be reset for each band, not a forward/reflected power meter?   Just a minor
inconvenience but it means one more knob to diddle when changing
bands.)

John Brosnahan  
La Salle Research Corp      24115 WCR 40     La Salle, CO 80645  USA
voice 970-284-6602            fax 970-284-0979           email broz at csn.net

>From Spike Lazar <slazar19 at sgi.net>  Wed Feb 28 15:04:18 1996
From: Spike Lazar <slazar19 at sgi.net> (Spike Lazar)
Date: Wed, 28 Feb 1996 10:04:18 -0500 (EST)
Subject: 160 Contests
Message-ID: <199602281504.KAA09270 at orion.bv.sgi.net>

AA0RS:
>I will starty the ball rolling, here are my list of requirements for 160 
>contests, please let me know what you think.....
>             
>1 Each contest to last from "local dawn to dusk" not from 'x' hours Zulu

      Dave is this a trick question? (Like if an airplane crashes where do
      they bury the suvivers?) I prefer 160 meter contesting after dark!

>3 Band split into 3, .....non participants....US EAST + US West.....DX....

     You almost got it right, How about all dx 5 points, all staions east
     of the Mississippi get 5 points for stations west of the Mississippi
     and visa-versa.

>5 Each organiser must appoint someone who's job is to tune the band logging 
>infringements. Disqualification rewards bad operating behaviour.

     Good idea, I nominate: KC1XX & WD9INF

>6 QSO must include serial number, lets reintroduce some skill into the qso

     Good idea, but instead of a number, how about cereal brand name:
     Coco Puffs, Corn Flakes ect. ect. 

  Additional Ideas:

  1. Anyone who works AA9AX gets credit for an extra mult!

  2. Anyone who works WB9Z, AB4RU or anyone in Beautiful Downtown anyplace 
     gets a lifetime disqualification.

  3. Anyone who has a TIC Ring, Facial Ticks, Ring Worm, Ring around the 
     collar or says anything bad about an XMATCH without using one, be 
     confined in the window for 24 hours while breathing Fish Head Gas
     and sitting on a load of anchovies!

    Sincerely,

    Dr. Bafoofnik **** (call witheld by society for cleaner drawers)