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7.3 Transmitter Adjustments<br />
Make sure your <strong>PK</strong>-<strong>232</strong> is adjusted for your SSB transmitter as<br />
described in section 3.5 and 3.5.2 of this manual before transmitting.<br />
These are very critical adjustments. If your <strong>PK</strong>-<strong>232</strong>'s AFSK level and<br />
transmitter microphone gain are not adjusted properly, other stations<br />
will not be able to copy your signals. Check your plate or collector<br />
current or the power output of your rig before going on the air.<br />
7.3.1 Going On The Air<br />
Make sure your transmitter and antenna are tuned and adjusted for the<br />
band and operating frequency you are using. Before you transmit, you<br />
must decide if you are going to "call CQ" or answer someone's CQ call.<br />
7.3.2 Calling CQ in FEC AMTOR<br />
If you plan to make a CQ call, you must do so in the FEC AMTOR mode.<br />
This is required since an ARQ AMTOR transmission requires another<br />
station to "Link-up" with. If you are using an AEA PAKRATT program,<br />
see the program manual to place the <strong>PK</strong>-<strong>232</strong> into FEC AMTOR transmit.<br />
If you are using a terminal or terminal program, the following will<br />
place your <strong>PK</strong>-<strong>232</strong> and transceiver into the transmit mode.<br />
o<br />
Type "FEC" then press the key to key your transmitter and<br />
automatically enter AMTOR FEC transmit mode.<br />
As soon as you type the key you will be transmitting! At this<br />
point you are also in the CONVERSE mode and anything you type will be<br />
sent in FEC by your transmitter.<br />
o<br />
Type in your CQ message. Make sure you include YOUR Callsign,<br />
your four-character Selcall (MYSELCAL) as well as your sevencharacter<br />
Selcall (MYIDENT) so others can respond to your CQ call.<br />
An example is shown below:<br />
CQ CQ CQ CQ CQ CQ CQ DE N7ML (NNML) (VTMFFFF)<br />
CQ CQ CQ CQ CQ CQ CQ DE N7ML (NNML) (VTMFFFF)<br />
CQ CQ CQ CQ CQ CQ CQ DE N7ML (NNML) (VTMFFFF)<br />
CQ CQ CQ CQ CQ CQ CQ DE N7ML (NNML) (VTMFFFF)<br />
SELCALL NNML (VTMFFFF) K<br />
<br />
o<br />
o<br />
Type at the end of your CQ call. The puts both<br />
your radio and the <strong>PK</strong>-<strong>232</strong> into the receive mode.<br />
Wait a bit to see if you get a response. If not, you can repeat<br />
the above procedure.<br />
7.3.3 Answering an FEC AMTOR CQ<br />
Normally when you see a station calling CQ in FEC AMTOR, you will want<br />
to answer him using ARQ AMTOR. Remember that ARQ AMTOR is the<br />
protocol that reduces the chance of transmission errors.<br />
Let's assume you hear NNML calling CQ. To answer, do the following:<br />
4/91 7-4<br />
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