BUT it should be done with a fully compliant serial device, using the
full RS-232 voltages (+/- 12V, some laptops 'cheat' using lower or not
negative voltages) in order to extend that far. Beyond 100' I would
expect that the bit rate would have to come down too, but I haven't
tested that. I would also suggest a full 9 wire PLUS shield cable,
bonding the shield at both ends to the device/computer chassis via the
connector housing. You may need some ferrite too, to be determined.
HNY,
Rick NHC
On 12/30/2015 11:57 AM, Cliff Frescura wrote:
8 ft is not true for rs-232. Depends on type of cable and baud rate. 50ft is
generally fine and can go up to hundreds of feet. Maybe you are thinking about
usb.
73,
Cliff K3LL
-------- Original message --------From: Mike va3mw <[email protected]>
Date:12/30/2015 11:32 AM (GMT-08:00) To: Va3ied <[email protected]> Cc:
[email protected] Subject: Re: [Elecraft]
Remote KAT500 While the spec for serial is about 8ft, I run it much further in
professional sports timing.
Give it a try and see if it works. If you can keep the baud rate down, that
will help.
To really do it correctly, you will want to run rs232 to rs485 converters and
that will certainly solve your problem. Www.rs485.com has the bits you need.
You can send serial like this thousands of meters. We do this all the time.
It isn't as complicated as it sounds.
Mike va3mw
On Dec 30, 2015, at 9:47 AM, Va3ied <[email protected]> wrote:
My tower and garden shed are about 150 feet away. I have LMR400 buried inside
some PEX pipe. Would like to use the KAT500 inside the shed...not sure how
well a serial connection that distance would work!
scott va3ied
--
View this message in context:
http://elecraft.365791.n2.nabble.com/Remote-KAT500-tp7604849p7612014.html
Sent from the Elecraft mailing list archive at Nabble.com.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
