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EB2DVY > PSK31 21.02.00 01:09l 324 Lines 14357 Bytes #-9652 (0) @ WW.SYD.NSW
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From: EB2DVY@SV2RQ.TSL.GRC.EU
To : PSK31@WW.SYD.NSW.AUS.OC
Charles R Greene writes:
. Pin 4 is the grouning to trouble shoot a problem with hooking up a Kenwood
TS570S with
my laptop for using PSK31 software. I built a Lectrokit PSKI interface and
am using following pinouts on the ACC2 13 pin DIN socket on rear of rig for
connections:
RX audio--pin 3
Ground -- pin 4
Mic audio input--pin 11
PTT--pin 9
My serial port on the laptop causes the rig to go into transmit mode when I
click mouse on TX area on software screen. However there is no RF going out.
The LED on the interface lights, and of course the receive part is working
fine. I'm guessing that somewhere in the Line-out circuit in my laptop there
may be a problem.
Any ideas?
K2 #250
http://www.wcnet.org/~mpaley
------------------------------
Date: Wed, 9 Feb 2000 08:37:42 -0800
From: "mposner" <mposner1@ix.netcom.com>
Subject: Re: [psk31] Kenwood TS570S setup
Hi Mark,
My TS870S manual shows that pin 12 on the ACC2 Connector is the ground to
use for the audio in. Pin 4 is the ground for the audio out. I don't know
if they are isolated from one another or not. Also, on the TS870 the mike
gain for pin #11 is settable via a menu. I would expect the 570S would be
similar, you might give that a try.
Cheers, 73 de Mike AD6AG
------------------------------
Date: Wed, 9 Feb 2000 14:00:20 -0500
From: Richard Carter <rcarter@isi.com>
Subject: RE: [psk31] Kenwood TS570S setup
The directions supplied with the TS-570 are misleading about the connector
pin-outs.
Re-read the manual concerning connection to an external TNC.
If I remember, there is a diagram of the connector showing the pin-out of the
DIN connector. The pin number don't match those labeled on the DIN.
You may have mistakenly miswired the connector.
I don't know why Kenwood uses such a cheep connector.
It is very difficult to wire, since it lacks solder cups.
Be very careful wiring the plug. It is easy to melt.
They could have provided a prewired pig-tail cable, requiring us to only wire
the other end. What did they save, 25 cents?
If the pin-out isn't the problem, verify that your audio output is turned on.
Connect a set of headphones to the soundblaster output jack, and see if you
can hear it.
You will also likely need an attenuator on the audio output.
A resistor divider should do the trick. If you find that you must adjust
the audio output to too low a level, ambient noise from the computer will drown
out your signal.
It sounds like you are using a transistor to activate the PTT line.
Make sure you mount this in a shielded enclosure to prevent RF noise from
activating the circuit.
Rich Carter - KE1EV
------------------------------
Date: Wed, 09 Feb 2000 21:10:05 +0000
From: Peter Martinez <Peter.Martinez@btinternet.com>
Subject: [psk31] AGC effects on PSK31 reception
From Peter Martinez G3PLX
Yes, you can give yourself QRM if you have an AGC line that's too
fast. If it's so fast that it goes up and down on the individual
cycles of 31Hz modulation of a PSK31 signal, then it will actually
have the effect of flattenning off the tops of the modulation cycles
of the signal. And peak-flattenning is another word for clipping,
which is a form of distortion, so the signal in question will appear
to have bad IMD and will indeed be splatterring in your receiver. If
that signal is not the one you are trying to copy but is a little way
up the band, then it could cause you some QRM. And of course the
interfering sigffeBand, then 5053 ifL'ALT PENEDES]{e Q-PENEDES}urse the6/19it's
sEA2KffeHUenclosure t63downHrnica]{REDme Q_ARA}. And of course the6/1949's
sEA1URthe L enclosure o p3 ifLal koj yoRED-e Q a form ourse
the5/15modulaEA1URMffeBUenclosure 16ttl [e Q Minteda
have the effect of fl5/15meceiver2RCgffeVIenclosure 2433 ifVire ia-G
On iz]Redme Qect of fl2/231odulaEA2GffeBIenclosure 2772l [e Q Bizkaia
have the effect of fl2/2309's sEA2URVffeBIenclosure 41739 [e V-A05 Bilbao
have the effecn for pihe eff@EA2URVffeBIenclosu sio :need a@ttenuator on the
might:ck, and see if< Lect-pin-ohe plug. It is ewouPara: <ng us to
onl@bipt106. It is ewouAs Mao:ck, and see ifould do tFeMy :pinh tho
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AlSat, 5X
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SB PSK313:05:07 ESTn for piChard f R G:
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SB PSK31 @ 7:cou
gaiinLloyd H. Yostttalhyost@nfdc I wouw9 ges
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jusheelickos W----d psk3s[psk3 thn tgram 4the AD6cko--g .ecJae0
______________________________________________________arGndhYtwl iriv. n.t:
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SB PSK321 10:52u
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Chap
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K+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++n
xFrunsu--rie lfups.hereenitC ca
ful ajaldosm@cents?
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++texteenuela [naided:runsub--rie l570S al jesub--rie l570S -to estign
Mo--einstru31 end What diW
Spnelsave, 25 cents?
If the pin-out
isn'+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++n
are isolated from one another or noEeE-whaP70S Do est V1 #306
***************************
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