Icom IC-M802 Installing page 20

22 March 2014
Discussion
Testing your installation by checking the output of Icom
IC M802 HF SSB radio is a simple process. You first
need a wattmeter that will cover the full range of the IC M802 and
the 150+ watts output signal.
While it would be nice to have one of the fine Bird watt meters, you can obtain all the
information you need to verify your system is working with a low cost watt meter. You
can use a low cost meter like those manufactured by
http://www.mfjenterprises.com/Categories.php?sec=244
Their watt meters range from about $ 40 to $100. Make sure the meter will read both
forward and reflected power. You will also need a short piece of coaxial cable to connect
the meter in line with the IC M802.
Download the SWR calculator spread sheet (SWR Sheet) from my web site on te
communications page to record your data.
http://www.made-simplefor-cruisers.com/-%20Communications/SWR-
POWER%20Calculations.xlsx
Connecting the Watt Meter
1. Disconnect the Coaxial cable on the back of the IC M802 radio.
2. Connect the Coaxial cable to the output of the watt meter. (Output/Antenna
connection)
3. Connect your short piece of coaxial cable between the output of the IC M802 and
the watt meter input. (Input/Transmitter connection)
4. Setup of the meter
a. If the meter has multiple ranges, make sure the range being used is
greater than 150 watts.
b. Identify the method on the meter to select forward and reflected power.
Some meters contain two meters that display both forward and reflected
power.
5. The initial reading will be forward power.
Set up the IC M802 for testing
1) The tests will be made on one frequency within each band, e.g. 2, 4, 6, 8, 12, 16, 18, 22, and
25 MHz.
a) For ease of testing I usually use the typical ship to ship channels: 2A, 4A, 6A, 8A, 12A,
16A, 18A, 22A, and 25A.
MFJ.
www.made-simplefor-cruisers.com