FCC ID: K6620285X20
IC ID: 511B-20285X20
VX-3R Operating Manual
Battery capacity may be reduced during extremely cold weather operation. Keeping the radio inside your
parka may help preserve the full charge capacity.
Interface of Packet TNCs
The VX-3R may be used for Packet operation, using the optional CT-91 microphone adapter (available
from your Yaesu dealer) for easy interconnection to commonly-available connectors wired to your TNC. You
may also build your own cable, using a four-conductor miniature phone plug, per the diagram below.
The audio level from the receiver to the TNC may be adjusted by the transceiver’s volume control (rotate
the DIAL knob while press and holding the [VOL] key, do not forget to pull the DIAL knob to rotate the DIAL
knob), as with voice operation. The input level to the VX-3R from the TNC should be adjusted at the TNC
side; the optimum input voltage is approximately 5 mV at 2000 Ohms.
Be sure to turn the transceiver and TNC off before connecting the cables, so as to prevent voltage spikes
from possibly damaging your transceiver.
When you are operating on Packet, switch the Receive Battery Saver OFF, as the “sleep” cycle may
“collide” with the beginning of an incoming Packet transmission, causing your TNC not to receive the full
data burst. See page ?? for details regarding Battery Saver setup.
Operation
R.F. says: Hi! I’m R. F. Radio, and I’ll be helping you along as you learn the many features of the VX-3R. I
know you’re anxious to get on the air, but I encourage you to read the “Operation” section of this manual as
thoroughly as possible, so you’ll get the most out of this fantastic new transceiver. Now. . .let’s get
operating!
Switching Power On and Off
1. Be sure the Battery Pack is installed, and that the battery is fully charged. Connect the antenna to the
top panel ANTENNA jack.
2. Press and hold in the orange POWER switch (on the left side of the transceiver) for one second. Two
beeps will be heard when the switch has been held long enough, and the current DC supply voltage
will indicated on the display for 2 seconds; if you are using the FNB-82LI Battery Pack, the small “Lit”
icon at the top of the display confirms that the Lithium-Ion Battery Pack has been detected. After this
2-second interval, the display will resume its normal indication of the operating frequency.
3. To turn the VX-3R off, press and hold in the orange POWER switch again for one second.
R.F. says: 1) If you don’t hear the two “Beep” tones when the radio comes on, the Beeper may have been
disabled via the Set Mode Item 14: BP SEL. See page ??, which tells you how to reactivate the Beeper.
2) You can change the Opening Message (DC supply voltage indication) to any desired message (up to 6
Vertex Standard Co., Ltd.
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