VX-800U Operating Manual VX-800U Operating Manual 1,Controls & Connectors LED Indicator Glows Green: Scan active Blinks Green: Busy Channel (or SQL off) Glows Red: Transmit Blinks Red: Battery Voltage is low Antenna Jack PTT (Push to Talk) Switch Monitor Button Lamp Button CH (Channel) Selector VOL/PWR Knob LCD SEL1 KEY (Left) SEL2 KEY (Right) Toggle SW MIC/SP Jack (External MIC/SP) Speaker Main Microphone Sub Microphone (Noise Canceling Microphone) Battery Pack Latch 16-Button DTMF Keypad (16-key version only) 2,Before You Begin Battery Pack Installation and Removal r To install the battery, hold the transceiver with your left hand, so your palm is over the speaker and your thumb is on the top of the belt clip. Insert the battery pack into the battery compartment on the back of the radio while tilting the Belt Clip outward, then close the Battery Pack Latch until it locks in place with a Click. r To remove the battery, turn the radio off and remove any protective cases. Open the Battery Pack latch on the bottom of the radio, then slide the battery downward and out from the radio while unfolding the Belt Clip. C a u t i o n ! : Do not attempt to open any of the rechargeable Ni-Cd packs, as they could explode if accidentally short-circuited. Low Battery Indication r As the battery discharges during use, the voltage gradually becomes lower. When the battery voltage reaches 6.0 volts, substitute a freshly charged battery and recharge the depleted pack. The TX/BUSY indicator on the top of the radio will blink r e d when the battery voltage is low. r Avoid recharging Ni-Cd batteries often with little use between charges, as this can degrade the charge capacity. We recommend that you carry an extra, fully-
charged pack with you so the operational battery may be used until depletion
(this deep cycling technique promotes better long-term battery capacity). 3,Operation 1 VX-800U Operating Manual Preliminary Steps r Install a charged battery pack onto the transceiver, as described previously. r Screw the supplied antenna onto the Antenna jack. Never attempt to operate this transceiver without an antenna connected. r If you have a Speaker/Microphone, we recommend that it not be connected until you are familiar with the basic operation of the VX-800. Operation Quick Start r To turn the top panels VOL/PWR knob clockwise to turn on the radio on. r Pull and turn the top panels CH selector knob to choose the desired operating channel. A channel number or channel name will appear on the LCD. r Rotate the VOL/PWR knob to set the volume level. If no signal is present, press and hold the Monitor button (the center button on the left side) more than 2 seconds; background noise will now be heard, and you may use this to set the VOL/PWR knob for the desired audio level. Press and hold the Monitor button more than 2 seconds (or press the Monitor button twice) to quiet the noise and resume normal (quiet) monitoring. r To transmit, press and hold the PTT switch. Speak into the microphone area of the front panel grille (lower right-hand corner) in a normal voice level. To return to the Receive mode, release the PTT switch. r Press the top panels SEL1/SEL2 button to active one of the preprogrammed functions, which may have been enabled at the time of programming by the dealer. See the next section for details regarding the available features. r Switch the top panels Toggle SW position to active one of the preprogrammed functions, which may have been enabled at the time of programming by the dealer. There are three positions of [A (left)], [B (center)] and [C (right)] in the toggle switch. See the next section for details regarding the available features. r Press the DTMF keys on the telephone keypad to send DTMF tones.(16-key version only) r If a Speaker/Microphone is available, remove the plastic cap and its two mounting screws from the right side of the transceiver, then make the connector of the Speaker/Microphone touch; secure the connector pin using the screw supplied with the Speaker/Microphone. Hold the speaker grille up next to your ear while receiving. To transmit, press the PTT switch on the Speaker/Microphone, just as you would on the main transceivers body. N o t e : Save the original plastic cap and its mounting screws. They should be re-installed when not using the Speaker/Microphone. 4,KEY and TOGGLE Functions VX-800 have the [SEL1], [SEL2], [MON], [LAMP] Key, ([A], [B], [C], [D] Key:
only 16-key version) and Toggle SW. The Key and SW function can be customized, via programmed by YAESU dealer, to meet your communications requirements. Some features may require the purchase and installation of optional internal accessories. The possible KEY and SW programming features are illustrated below.
[SEL1], [ SEL2], [MON], [LAMP],[A], [B], [C] and [D] Key M o n i t o r (Generally, it sets to MON Key) L a m p (Generally, it sets to LAMP Key) C h a n n e l S c a n 2 VX-800U Operating Manual D u a l W a t c h H i g h / L o w P o w e r T a l k A r o u n d T X S a v e D i s a b l e E n c r y p t i o n D i s a b l e (only, when using DTMF/Encryption Unit) F o l l o w - M e D W G r o u p U p G r o u p D o w n C h a n n e l U p C h a n n e l D o w n S E T M o d e C a l l / R e s e t (only, when using DTMF/Encryption Unit) S p e e d D i a l (only, when using DTMP/Encryption Unit) E m e r g e n c y (only, when using DTMF/Encryption Unit) L C D I n v e r t TOGGLE Switch C h a n n e l S c a n D u a l W a t c h H i g h / L o w P o w e r T a l k A r o u n d T X S a v e D i s a b l e E n c r y p t i o n D i s a b l e (only, when using DTMF/Encryption Unit) F o l l o w - M e S c a n L o c k L C D I n v e r t 5,Understanding Radio Waves Radio waves travel from one point to another by several different means. The general term for these methods of wave travel is propagation. You may know that shortwave signals can be propagated over distances of several thousand miles by reflection off of the upper regions of the atmosphere. Your hand-held transceiver, on the other hand, operates on the so-called VHF (Very-High Frequency) band. On this band, radio waves usually do not reflect off of the atmosphere. Instead, the radio waves behave almost as light: they travel in a straight line, and when they meet a building or obstruction, they go no further in that direction. Therefore, it is important that you be as high and free from obstructions as possible to cover the greatest distance when using your radio. If you operate from inside a car or building, any metal around you can absorb much of the signal, both transmitted and received. Coverage may therefore be very poor under those conditions. However, if you must operate from indoors, moving next to a window will improve communications. In view of the factors just discussed, you can easily see the potential benefit of holding the radio up high near your mouth while transmitting. In this way the antenna is high and clear, and coverage is best. On final note regarding propagation is useful in improving coverage. Because radio waves at VHF is similar to light waves, they do reflect, to 3 VX-800U Operating Manual varying degrees, off of hills, buildings, and the like. In a crowded urban area, with many close buildings close together, many reflections may occur, and interfere with one another, causing variations in signal strength at different locations. Therefore, if a signal is weak and you walk a few feet in any direction, reception may suddenly become clear, because a particular reflection path may become dominant. Reflections are frequently useful, as they can allow for communications between two stations over a highly obstructed path. 6,Specifications GENERAL F r e q u e n c y R a n g e:
N u m b e r o f C h a n n e l s:
C h a n n e l S p a c i n g:
B a t t e r y V o l t a g e:
T e m p e r a t u r e R a n g e:
C a s e S i z e (W x H x D):
W e i g h t ( a p p r o x . ) :
RECEIVER C i r c u i t T y p e:
I F s:
1 2 - d B S I N A D S e n s i t i v i t y:
S q u e l c h S e n s i t i v i t y:
S e l e c t i v i t y :
I n t e r m o d u l a t i o n:
S p u r i o u s R e j e c t i o n:
I m a g e R e j e c t i o n:
A F O u t p u t:
TRANSMITTER P o w e r O u t p u t:
F r e q u e n c y S t a b i l i t y:
M o d u l a t i o n S y s t e m:
M a x i m u m D e v i a t i o n:
F M N o i s e :
S p u r i o u s E m i s s i o n:
A F D i s t o r t i o n (@ 1 kHz):
M i c r o p h o n e T y p e:
450-485 MHz (Type-A) 450-485 MHz (Type-CS) 450-485 MHz (Type-D) 450-485 MHz (Type-F) 200 channels 12.5/25/30 kHz 7.5 VDC 30 C to +60 C 58 x 110 x 28.9 mm w/FNB-V57 360 grams with FNB-V57, antenna, belt clip Double-conversion super-heterodyne 44.25 MHz & 450 kHz
< 0.2 V
< 0.25 V
> 70 dB
> 70 dB
> 70 dB
> 70 dB 0.5 W @ 16 W
, 5 % THD (BTL output) 5.0/1.0 W (Selectable) better than 2.5 ppm Direct FM 2.5 kHz (12.5 kHz)/5 kHz (25 kHz)
> 35 dB (12.5 kHz)/> 40 dB (25 kHz)
> 60 dB below carrier
< 5 %
condenser 2-kW Specifications are subject to change without notice or obligation. FVP-25 FNB-V57 FBA-25 NC-XX A c c e s s o r i e s & O p t i o n s Encryption/DTMF Pager Unit 7.2 V 1100 mAh Ni-Cd Battery Battery Case 13.8 VDC Rapid Desk-Top Charger 4 VX-800U Operating Manual NC-XXB NC-XXC NC-XXU NC-XX VTP-50 MH-XXB4B MH-XXA4B VC-XX CT-71 CT-27 120 VAC Rapid Desk-Top Charger 230-240 VAC Rapid Desk-Top Charger 230 VAC Rapid Desk-Top Charger Overnight Desktop Charger VX-Trunk Unit Speaker/Microphone Earpiece Microphone VOX Headset PC Programming Cable Radio-to-Radio Programming Cable 5