[aprssig] Powerpoint/Adobe Reader
Stephen H. Smith
wa8lmf2 at aol.com
Sun Feb 26 12:27:31 CST 2006
fred at wb4aej.com wrote:
> I'm going to live with the crossovers. I corrected the spelling error on the second page and I reordered them so that what was the second page is now the first.
> Additionally, I've saved it as a PDF so you folks can read it.
> However, I just noticed the 'audio out' connector on the second page (TM-211A). I'm wondering if the 1/8" phone plug could be eliminated from the harness using it.
> Check it out at http://www.wb4aej.com/APRS/APRS_Harness.pdf.
The "receive audio" or "audio out" pin on Kenwood mic jacks has been on
some, but not all, Kenwood radios for decades. It is very
inconsistently implemented -- some radios have 50 millivolt
non-deemphasized non-squelched raw discriminator audio here, others
have higher level de-emphasized audio here and still others have actual
speaker audio affected by the volume control here.
Since I like to take advantage of this contact for a "one-plug" hookup
for SSTV (especially for the Kenwood VC-H1 handheld SSTV device) and
packet, I have measured the type and level of audio available on the mic
jack for many Kenwood radios. On radios that didn't have any
connection here, I added it. The results of my findings are summarized
in a PDF document on my website at:
Look for the link to the file " KenMic_RX_Audio.PDF " .
As is usual for PDFs on-line, if you LEFT-click the link, the file
will try to open in your web browser, using Acrobat as a browser plug-in
(if Acrobat is installed on your system). A RIGHT click will offer a
choice to download the file for use off-line.
Stephen H. Smith wa8lmf (at) aol.com
EchoLink Node: 14400 [Think bottom of the 2M band]
Home Page: http://wa8lmf.com
"APRS 101" Explanation of APRS Path Selection & Digipeating
Updated APRS Symbol Chart
New/Updated "Rev G" APRS http://webs.lanset.com/wa8lmf/aprs
Symbols Set for UI-View,
UIpoint and APRSplus:
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