Timewave PK-232MBX, Руководство по эксплуатации

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PK-232 MBX – OPERATING MANUAL PACKET-RADIO
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CHAPTER 4 – PACKET-RADIO
4.1 Overview
In the last several years Packet-Radio has grown to become perhaps the most popular digi-
tal mode found on the amateur bands. Although Packet can be found on HF (primarily on
the 20 meter band) it is most popular on the VHF and UHF FM bands. This chapter will start
with general Packet-Radio operation and then discuss VHF and UHF Packet. Packet-Radio on
the HF bands requires some special considerations, so we will leave it until the end of this
chapter.
4.1.1 Getting Started
You can learn quite a bit about Packet operation with the PK-232 before even connecting
it to a transceiver. For your first Packet practice, the PK-232 will be connected in a "loop-
back" circuit as done in the "Quick Check" performed in Chapter 2. In this configuration,
the PK-232 will "talk to itself" which allows you to become familiar with Packet operation
before actually going on the air.
4.1.2 Making the Loopback Connection
Make sure the PK-232 is turned OFF and power is removed before performing one of the
following.
I If you constructed a single Radio cable in Chapter 3, you should have one unused
radio cable available for the following:
1. Get the unused Radio Cable from Chapter 3.
2. Strip about 1/4 inch of insulation from the Green and White wires at the "ra-
dio" end of the cable.
3. Join the Green and White wires by twisting them together gently.
4. Insert the 5-pin plastic plug end of the cable into the "RADIO 2" connector
on the PK-232's rear panel. Be sure that the plug is inserted with the cable
running downward.
5. Set the front-panel "RADIO 1/RADIO 2" switch to "RADIO 2".
6. Skip to section 4.2.
II If you constructed two Radio Cables in Chapter 3 and do not have an unused Radio
Cable, then you must do the following:
1. Locate JP1, the Battery Jumper which can be removed through a hole in the
bottom of the PK-232 located immediately behind the "RADIO 1/RADIO 2"
switch.
2. Remove this Jumper by lifting it straight up off the two posts.
3. Place this Jumper on pins 1 & 2 of the "RADIO 2" connector J6.
NOTE: Pins 1 and 2 are the right most pins of J6 when looking at the
connector from the rear of the PK-232.
4. Set the front-panel "RADIO 1/RADIO 2" switch to "RADIO 2".
5. Skip to section 4.2.