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CX2SA > SATDIG 13.06.09 21:34l 195 Lines 5840 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
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Today's Topics:
1. Central States VHF Society Seeks Presentations for Annual
Conference (Mark Thompson)
2. 910/KJ6KO AMP (w7lrd@xxxxxxx.xxxx
3. Re: 910/KJ6KO AMP (Stan W1LE)
4. AO-51 Hamfest Demonstration, Saturday evening, Medellin,
Colombia (Daniel Schultz)
----------------------------------------------------------------------
Message: 1
Date: Fri, 12 Jun 2009 17:13:24 -0700 (PDT)
From: Mark Thompson <wb9qzb_groups@xxxxx.xxx>
Subject: [amsat-bb] Central States VHF Society Seeks Presentations for
Annual Conference
To: amsat-bb@xxxxx.xxx
Message-ID: <956777.16137.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Central States VHF Society Seeks Presentations for Annual Conference:
The Central States VHF Society (CSVHFS) <http://www.csvhfs.org/> is soliciting
presentations and poster displays for their 43rd Annual Conference this summer
-- July 23-26 -- at the Holiday Inn in Elk Grove Village, Illinois
<http://www.csvhfs.org/conference/index.html>.
Possible presentation topics on all aspects of weak-signal VHF and above
include,
but are not limited to, antennas (modeling, design, arrays and control),
equipment construction,
propagation, test gear, regulatory issues, operating, digital signal
processing
and software-defined radio.
The submission deadline for presentations and poster displays is June 29;
bring posters for display with you to the conference.
For more information, visit the CSVHFS 2009 conference Web page
<http://www.csvhfs.org/conference/index.html>
or contact Kermit Carlson, W9XA <w9xa@xxxxx.xxx>.
------------------------------
Message: 2
Date: Sat, 13 Jun 2009 02:30:02 +0000 (UTC)
From: w7lrd@xxxxxxx.xxx
Subject: [amsat-bb] 910/KJ6KO AMP
To: amsat-bb@xxxxx.xxx
Message-ID:
<1538043052.3757521244860202690.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx
.xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Hello
Before I do something stupid.? I need to know a good way of using my 910 to
switch a KJ6KO amp.? In my application I am using a series of external relays
to "switch around" the? amp for 1296 receive.? The Acc socket pin 3 seems to
have a low voltage on it.? I will be switching a couple of 28V relays as well
a switching on the amp.? Has anyone been here?
73 Bob W7LRD
------------------------------
Message: 3
Date: Fri, 12 Jun 2009 23:16:03 -0400
From: Stan W1LE <stanw1le@xxxxxxx.xxx>
Subject: [amsat-bb] Re: 910/KJ6KO AMP
To: w7lrd@xxxxxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4A3319F3.40103@xxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
Hello Bob,
Time for a sequencer. IC-910H can not handle all of the current needed
for the transfer
relays, nor the 28 VDC for these relays.
Sequencers are made by DEMI, JWM Engineering, ARRL Handbook has them,
ARR makes 'em.
Grab the MIC PTT line before it gets to the IC-910H, feed it to the
sequencer input.
Sequencer output #1 supplies DC power to the mast mounted preamplifier.
Sequencer output #2 drives the PA PTT input
(Sequencer output #3 drives the IPA or transverter PTT input) you do not
use...
Sequencer #4 output drives the transceiver PTT input on the MIC connector.
Feed the MIKE audio directly into the mike connector
The DEMI sequencer has isolated relay output contacts with decent
ampacity ~ 2A
use to switch the 28 VDC to the PA bypass relays.
My sequencer is in a separate diecast box.
You are at the point where the IC-910H alone, can not do what you want,
safely and reliably.
Depending on the size of the coaxial RF relays, a DEMI (RVD) relay
voltage doubler may be appropriate.
Takes in 12 VDC and will toggle a 28 VDC coaxial relay with PTT control.
Stan, W1LE Cape Cod FN41sr
w7lrd@xxxxxxx.xxx wrote:
>
> Hello
>
> Before I do something stupid. I need to know a good way of using my 910 to
switch a KJ6KO amp. In my application I am using a series of external relays
to "switch around" the amp for 1296 receive. The Acc socket pin 3 seems to
have a low voltage on it. I will be switching a couple of 28V relays as well
a switching on the amp. Has anyone been here?
>
> 73 Bob W7LRD
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 4
Date: Sat, 13 Jun 2009 14:41:26 -0400
From: "Daniel Schultz" <n8fgv@xxx.xxx>
Subject: [amsat-bb] AO-51 Hamfest Demonstration, Saturday evening,
Medellin, Colombia
To: <amsat-bb@xxxxx.xxx>
Message-ID: <390NFmsOA8268S04.1244918486@xxxxxxxx.xxx.xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Just a reminder that Guillermo, HK6IOP, will be giving a satellite
demonstration in Medellin, Colombia, on AO-51 on the 23:30 UTC pass this
evening. Please listen for him and give a call on AO-51 at that time to insure
a successful satellite demo.
Dan Schultz N8FGV
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
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End of AMSAT-BB Digest, Vol 4, Issue 277
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