[VHFcontesting] HamIM = APRS supporting VHF Contests

[Ev Tupis]

The strategy of using APRS in support of VHF contesting is both real and solidly supported by the ARRL.

When APRS is configured to run in this way, it is called "HamIM" (so as to differentiate it from APRS which is *not* legally applicable to contesting due to the use of "assistance" in the form of digipeating and Internet gateways).

To be *most* successful you *must*:
1. Reconfigure your APRS software in accordance with the instructions found at http://www3.qth.com/~isisocom/propnet/HamIM/HamIM.html
2. Operate on a unique frequency (147.585 MHz has been used in the past)
3. Maximize one station for FM success
   a. Vertical *omnidirectional* antenna with *gain*
   b. High power amp with preamp (many ran 160 watt brick amps)
   c. Use Kantronics TNC (with the ability to operate "open squelch")

Over the years, I've answered lots of questions that start with the phrase "Yeah, but what about..." (or it's variations) and go on to ask rules-based questions.  Those questions should go to the event sponsors, rather than to me.

On the other hand, in 2002 (when the strategy was first floated...and it was called "BEACONet" due to the fact that Rovers can be setup to "beacon" their location for others to track) -- the ARRL ruled that it is *fine* to use for their events.  See the statement to that effect in the above hyperlink.

Lastly, don't be confused by the link URL above.  The HamIM information is co-hosted on the PropNET website.


Ev, W2EV


 
____________________________________________________________________________________
Food fight? Enjoy some healthy debate 
in the Yahoo! Answers Food & Drink Q&A.
http://answers.yahoo.com/dir/?link=list&sid=396545367