Guided Tour - VR3 Front Panel
1: Antenna - The antenna mounting allows full rotation for optimum placement. In normal
operation, the antenna should be placed in a vertical position. It also can be folded inward
for convenience when transporting the VR3. See the “Setting Up and Using Your VHF TD
Series / VHF Series System” section on page 10 in this manual for more information about
antenna positioning.
2: Volume control - This knob sets the level of the audio signal being output through both
the balanced and unbalanced output jacks on the rear panel. Reference level is obtained
when the knob is turned fully clockwise.
3: “TX ON” LED - Lights when carrier signal of sufficient strength is being received by the
VR3.
4: SQL (Squelch) control - This control determines the maximum range of the VR3
before audio signal dropout. Although it can be adjusted using the supplied plastic
screwdriver, it should normally be left at its factory setting. See the “Setting Up and Using
Your VHF TD Series / VHF Series System” section on page 10 in this manual for more
information.
5: AF Level meter - This “ladder” display (similar to the VU bar meter used on audio
devices) indicates the strength of the incoming audio signal. When the “100%” segment is
lit, the incoming signal is optimized at unity gain; when the “125%” segment is lit, the signal
is overloading. When only the left-most “10%” segment is lit, the incoming signal is at just
10% of optimum strength. If no segments are lit, little or no signal is being received.
See the “Setting Up and Using Your VHF TD Series / VHF Series System” section on page
10 in this manual for more information.
6: Power LED - This lights green whenever the VR3 is turned on.
7: Power switch - Use this to turn the VR3 power on and off. When it is on, the Power
LED (see #6 above) is lit.
7
ENGLISH
MAX.
SQL. MIN.
