User manual KENWOOD TH-G71A

[. . . ] 1 Activating the Tone Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Selecting a Tone Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Automatic Repeater Offset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 TRANSMITTING A 1750 Hz TONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] VOX cannot be used with an optional Speaker/ Microphone. VOX Gain To enjoy the VOX function, take the time to properly adjust the VOX Gain level. This level controls the VOX circuit to detect the presence or absence of your voice. There are 2 ways to adjust the VOX Gain. 2 Set the TX inhibit to "On" or "Off". · "TX Inhibit" appears and an error beep sounds if the transceiver tries to transmit while TX Inhibit is ON. While the VOX function is ON: 1 Speak into the headset microphone using your normal tone of voice to transmit. · If the transmission does not begin, you must readjust the VOX Gain so that transceiver transmits while you are speaking. To readjust the gain, press and hold [PTT] then press [ ]/[ ] to select a more sensitive gain level. The transceiver will remain in Adjustment Mode for approximately 5 seconds. SELECTING AN OUTPUT POWER It is a good idea to select lower transmit power if communications is still reliable. When operating from battery power, you will enjoy more operating time before a recharge is necessary. Press [F], [MENU] to select high (H), low (L), or economic low (EL) power. · You can program different power settings for bands A and B. Note: When the transceiver overheats because of ambient high temperature or continuous transmission, the protective circuit may function to lower transmit output power. · 2 Adjust the VOX Gain by pressing [ ]/[ ] until the transceiver reliably switches to transmission mode each time you speak while the transceiver is transmitting. From the Menu: 1 Enter Menu mode and access Menu 135. VOX (VOICE-OPERATED TRANSMISSION) VOX eliminates the necessity of manually switching to Transmit mode each time you want to transmit. The transceiver automatically switches to Transmit mode when the VOX circuitry senses that you have begun speaking into the microphone. When you operate the VOX function, you must use an optional Headset; the internal speaker and microphone are too close to each other to be used for the VOX function. To turn the VOX function ON: 1 Enter Menu mode and access Menu 134. 2 Select the desired VOX gain level. VOX Delay Time If the transceiver returns to reception mode too quickly after you stop speaking, the end of your transmission may not be sent. Spread spectrum (SS) technology is used over a bandwidth of 2. 046 MHz to prevent interference among all the satellite signals on a common carrier frequency. Position Determination Principle The GPS receiver receives the radio signals transmitted from the GPS satellites. The receiver measures the time duration between when the signal leaves the satellite and when the signal arrives at the GPS receiver. Knowing this time allows calculation of the distance that the signal traveled from that particular satellite. By receiving multiple signals from different satellites and doing this distance calculation multiple times, the intersection of the spherical surfaces that represent the respective radius distances to the various satellites will determine a single point. The precision of the determination of the intersecting point relies on the satellites and the data collected. Datum (Geodetic Survey System) The latitude and longitude information required by the GPS receiver does not allow for accurate representation of the unevenness of the Earth's surface. For use with GPS, the current standard that defines the precise shape of the Earth is called WGS-84. By using this standard in conjunction with mapping standards for each country, accurate position plotting on a map can be done. GPS and APRS Position Format Although position can be described in many different formats, such as degrees, degrees and minutes, and degrees, minutes and seconds, the GPS system and APRS have standardized on the degrees and decimal minutes format. Just like it is important to use proper international phonetics when spelling on the air, it is important in APRS as in any communications system to have a default standard for position. All operators should be trained to use the DDD MM. mm format by default in voice communications just like in data formats. Using these standards on the air will prevent communications errors, confusion, repeats, and conversions. Interval and Total Distance Geographic Coordinates Latitude Longitude Format DD MM. mm (degrees and minutes) DDD MM. mm (degrees and minutes) Example 39 49. 31N +39 49. 31 84 15. 39W -84 15. 39 GPS ­ 1 INTERNAL GPS FUNCTION ON/OFF Turn this function Off when connecting an external GPS receiver to the COM terminal. [. . . ] [A/B]: Deletes the digit at which the cursor is blinking. 5 Press [ OK]. The keypad also is available to enter alphanumeric characters in step 2. VFO/ Memory Recall mode switch XIT/ RIT offset frequency increase XIT/ RIT offset frequency decrease In LSB, USB, or CW mode: 10 Hz/ 1 kHz PROGRAMMING A TONE FREQUENCY On receiving a tone from the Commander, the Transporter causes the HF transceiver to enter Transmit mode. On both the Commander and Transporter, access Menu 502 and select the desired, same tone frequency. [] [ ] 1 (FAST) switch In FM or AM mode: 1 kHz/ 10 kHz switch [#] 2 (ENTER) [PTT] 1 In VFO mode: frequency entry ON In Memory Recall mode: channel number entry ON To transmit audio on an HF frequency 2 "FS" appears when you select 1 kHz step (LSB/ USB/ CW) or 10 kHz step (FM/ AM). After pressing [#], press [0] to [9] to enter a frequency or memory channel number. SKY CMD ­ 3 WEATHER ALERT (TH-G71A ONLY) The Weather Alert is available only in the USA and Canada. 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