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  4. TC-271
  5. Quick Manual

Quanzhou Truest Communication TC-271 Quick Manual

Summary of TC-271

  • Page 1

    Tc-271 compact multifunctional vhf/uhf fm transceiver frequency range: 136—174mhz 400-430mhz 440-480mhz max. Rf output power: 50w/35w 60w/40w dtmf luminous hand-held microphone for operating at night front speaker with high speech quality large lcd with alphanumeric display capability.

  • Page 2

    Acknowledgements! Thank you for purchasing this hys+logo product. Hys+logo is dedicated to provide amateur radio products which always surprise and excite serious hams. This transceiver is no exception. As you learn how to use this transceiver, you will find that hys+logo lays great emphasize on “us...

  • Page 3

    Precautions please observe the following precautions to prevent fire, personal injury, and/or transceiver damage: • do not attempt to configure your transceiver while driving; it is simply too dangerous. • be aware of local laws pertaining to the use of headphones/headsets while driving on public ro...

  • Page 4

    Contents supplied accessories ............................. Writing conventions followed in this manual ............................................. Preparation…………………………………….. Mobile installation ....................................... Dc power cable connection...................... Mobile operati...

  • Page 5

    Transmitting a 1750 hz tone .................. Reverse function .................................... Automatic simplex check (asc) ............ Tone frequency id scan ........................ Memory channels number of memory channels .............. Simplex & repeater or odd-split memory channel........

  • Page 6

    Selecting a dcs code ................................ Dcs code id scan ..................................... Dual tone multi-frequency (dtmf) functions manual dialing .............................................. Dtmf monitor ................................................ Dtmf tx hold ..............

  • Page 7

    Vfo reset ........................................................ Troubleshooting........................................... Specifications index supplied accessories after carefully unpacking the transceiver, check the items listed in the table below. We recommend you keep the box and packaging fo...

  • Page 8

    Preparation mobile installation when installing the transceiver, select a safe, convenient location inside your vehicle, which will minimize dangers to your passengers and yourself while the vehicle is in motion. Consider installing the unit at an appropriate position so that your knees or legs will...

  • Page 9

    Dc power cable connection caution: locate the power input connector as close to the transceiver as possible. Mobile operation the vehicle battery must have a nominal voltage of 12 v. Never connect the transceiver to a 24 v battery. Be sure to use a 12 v vehicle battery that has sufficient current ca...

  • Page 10

    Fixed station operation in order to use this transceiver for fixed station operation, you need a separate 13.8v dc power supply [not included]. The recommended current capacity of your power supply is 12a. 1 connect the dc power cable to the regular dc power supply and ensure that the polarities are...

  • Page 11

    Replacing fuses if the fuse blows, determine the cause, then correct the problem. After the problem is resolved, replace the fuse. If newly installed fuses constantly blow, disconnect the power cable and contact your authorized hys+logo dealer or an authorized hys+logo service center for assistance....

  • Page 12

    [antenna connector, to antenna, feed line connector] accessory connections external speaker if you plan to use an external speaker, choose a speaker with an impedance of 8 Ω. The external speaker jack accepts a 3.5 mm mono (2-conductor) plug. We recommend using the sp-50b speaker. Microphone for voi...

  • Page 13

    Pc connection to utilize the optional mcp-1a software, you must first connect the transceiver to your pc using an optional programming cable (via the microphone jack). The mcp-1a is free downloadable software available from hys+logo at the following url: http://www.Trustcomnctn.Com or ask our sales ...

  • Page 14

    Note: if the external tnc has a common pin for 1200 bps and 9600 bps data output, connect this pin to the data connector pr9 pin. Shorting the pr9 and pr1 pins will cause the tnc to malfunction. Adjust the transceiver data communication speed (1200 bps or 9600 bps) as necessary {page 54}. If dc volt...

  • Page 15

    5 press and hold mic [ptt], then speak in your normal tone of voice. 6 release mic [ptt] to receive. 7 repeat steps 4, 5, and 6 to continue communication. Getting acquainted front panel note: this section describes only the main functions of the front panel controls. Explanations for functions not d...

  • Page 16

    Press to enter vfo mode {page 15}. In this mode, you can change the operating frequency using the tuning control or mic [up]/[down]. Press and hold for 1 second while in vfo mode to begin band scan {page 37}. Press and hold for 1 second while in vfo mode after programming a scan range to begin progr...

  • Page 17

    Appears when the reverse function is activated {page 26}. Appears when the automatic simplex check (asc) function is activated {page 26}. Appears when the priority scan function is activated {page 41}. Appears when the weather alert function is activated {page 35}. (k market models only.) appears wh...

  • Page 18

    Rear panel 1 antenna connector connect an external antenna {page 5} here. When making test transmissions, connect a dummy load to replace the antenna. The antenna system or load should have an impedance of 50 Ω. Note: e market models use an n-type antenna connector while other models use an m-type (...

  • Page 19

    4 call/a key identical to the front panel call key. This key can be reprogrammed if desired {page 55}. Press and hold mic [ptt], then press [call/a] to transmit a.. 5 vfo/b key identical to the front panel vfo key. This key can be reprogrammed if desired {page 55}. Press and hold mic [ptt], then pre...

  • Page 20

    Basic operations switching the power on/off 1 press [ ] (power) to switch the transceiver power on. •a high pitched double beep sounds and a power-on message {page 56} appears briefly, followed by the frequency and other indicators. 2 to switch the transceiver off, press [ ] (power) (1s). • when you...

  • Page 21

    Transmitting 1 to transmit, hold the microphone approximately 5cm (2 inches) from your mouth, then press and hold mic [ptt] and speak into the microphone in your normal tone of voice. • “ ” and the rf power meter appears on display. The rf power meter shows the relative transmit output power ( ). • ...

  • Page 22

    Mhz tuning mode. To adjust the mhz digit: 1 while in vfo or call mode, press [menu]. • the mhz digit blinks. 2 turn the tuning control to select the desired mhz value. 3 press any key to set the selected frequency and return to normal vfo mode. 4 continue adjusting the frequency as necessary, using ...

  • Page 23

    Key in display 1 4 4. 6 5 0 [enter] – – – – – – [1], [4], [5] 1 4 5. – – – mic [vfo] 1 4 5. 6 5 0 note: if the entered frequency does not match with the current frequency step size, the frequency is automatically rounded down to the next available frequency. When the desired frequency cannot be ente...

  • Page 24

    4 turn the tuning control to select your desired parameter. 5 press [menu] to store the new setting or any other key to cancel. 6 press any key other than [menu] to exit menu mode. Menu function list on display menu no. Function selections default ref. Page stp 1 frequency step size 2.5(vhf)/5./6.25...

  • Page 25

    On display menu no. Function selections default ref. Page ck 19 call key call/1750 call 25,34 hld 20 1750hz tone tx hold on/off off 25 tot 21 time out timer 3/5/10 min 10 57 bcl 22 busy channel lockout on/off off 53 p.On.Msg 23 power-on message 6 characters - 56 bp 24 beep on/off on 52 bs 25 beat sh...

  • Page 26

    Pf4 38 microphone programmable function key moni/enter/1750/vfo/mr/ call/mhz/rev/sql/m—v/ m.In/c.In/menu/shift/low/ bright/lock/tone/step call 55 dt 39 data tx speed 1200/9600bps 1200 54 bright 40 display brightness on/off max. Level 53 abr 41 auto display brightness on/off off 53 wxa1 42 weather al...

  • Page 27

    Offset programming flow if you store all the above data in a memory channel, you will not need to reprogram the parameters every time. Refer to “memory channels” {page 28}. Programming an offset you must first select an amateur radio repeater downlink frequency as described in “selecting an offset f...

  • Page 28

    1 press [f], [menu] and turn the tuning control to select menu no. 10 (offset). 2 press [menu] and turn the tuning control to select the appropriate offset frequency. The selectable range is from 0.00 mhz to 69.95 mhz in steps of 50 khz. 3 press [menu] to store the setting or any other key to cancel...

  • Page 29

    Note: 42 different tones are available for the transceiver including 37 eia standard tones and 5 non-standard tones. E market models only: to transmit a 1750 hz tone, simply press [call] without pressing mic [ptt] (default setting). Release [call] to quit transmitting. You can also make the transcei...

  • Page 30

    Transmitting a 1750 hz tone call channel default settings: • on e market models, pressing [call] causes the transceiver to transmit a 1750 hz tone. • on other market models, pressing [call] shifts the transceiver to the call channel {page 35}. Most of the repeaters in europe require the transceiver ...

  • Page 31

    If pressing [rev] places the transmission frequency outside the allowable range, pressing mic [ptt] causes an error tone to sound and transmission is inhibited. You cannot switch reverse on or off while transmitting. Automatic simplex check (asc) while using a repeater, the asc function periodically...

  • Page 32

    3 press [menu] to program the identified tone frequency in place of the current tone frequency or press any other key to exit the tone frequency id scan. Turn the tuning control while the identified tone frequency is blinking to resume scanning. 4 press any key other than [menu] to exit menu mode. N...

  • Page 33

    An odd-split channel. Select either application for each channel depending on the operations you have in mind. Simplex & repeater channels allow: • simplex frequency operation • repeater operation with a standard offset (if an offset direction is stored) odd-split channels allow: repeater operation ...

  • Page 34

    If storing a simplex frequency, you may select other related data (ctcss or dcs settings, etc.). 4 press [f]. •a memory channel number appears and blinks. • “ ”appears if the channel contains data. • memory channel numbers l0/u0 ~ l2/u2 {page 38}, pr {page 38}, and al (weather alert) {page 35} (k ma...

  • Page 35

    2 turn the tuning control to select your desired memory channel. •you cannot recall an empty memory channel. •to restore vfo mode, press [vfo]. Using the microphone keypad you can also recall a memory channel by entering a desired memory channel number with the microphone keypad. 1 press [mr] to ent...

  • Page 36

    You can also clear the priority channel, the al channel, and l0/u0 ~ l2/u2 data. (the call channel cannot be cleared.) to clear all memory channel contents at once, perform full reset {page 62}. You cannot clear channels while in channel display mode. Naming a memory channel you can name memory chan...

  • Page 37

    You can overwrite stored names by repeating steps 1 to 8. The stored name is erased when you clear the memory channel data. Memory channel transfer memory vfo transfer after retrieving frequencies and associated data from memory recall mode, you can copy the data to the vfo. This function is useful,...

  • Page 38

    The tables below illustrate how data is transferred between memory channels. 1 when “100” is selected in menu no.15 (m.Ch). 2 the al channel is available for k market models only. Note: when transferring an odd-split channel, the reverse status, offset direction, and offset frequency are not transfe...

  • Page 39

    Call channel call channel default settings: •on e market models, pressing [call] causes the transceiver to transmit a 1750 hz tone {page 25}. •on other market models, pressing [call] changes the transceiver to the call channel. The call channel can be recalled instantly no matter what frequency the ...

  • Page 40

    Weather alert (k market models only) any of the noaa weather radio channels can be programmed to the al memory channel of the transceiver. The transceiver can be configured to check the noaa weather alert tone (1050 hz) and will automatically alert you by recalling and monitoring the weather radio f...

  • Page 41

    4 press any key other than [menu] to exit menu mode. •the transceiver automatically changes to the al channel. •the tone, ctcss, and dcs functions cannot be configured to the al channel. •priority scan is set to off automatically when the weather alert function is turned on. 5 to exit weather alert ...

  • Page 42

    •memory store •memory to vfo transfer •memory to memory transfer •clear memory channel •vfo reset •full reset • mhz step •selection for tone and selective call •auto simplex checker •menu mode to recover normal operation, turn the transceiver power off and press [rev]+[ ] (power) again. Note: to ent...

  • Page 43

    Note: when the ctcss or dcs function is activated, the transceiver stops at a busy frequency and decodes the ctcss tone or dcs code. If the tone or code matches, the transceiver unmutes. Otherwise, it resumes scanning. Press and hold the mic pf key programmed as moni {page55} to pause scan in order ...

  • Page 44

    3 turn the tuning control or press mic [up]/[dwn] to select a memory channel from l0 ~ l2. 4 press [mr] to store the start frequency in the memory channel. 5 turn the tuning control to select your desired end frequency. 6 press [f]. 7 turn the tuning control or press mic [up]/[dwn] to select a match...

  • Page 45

    3 press any key other than [f] or [ ] (power) to stop mhz scan. Memory scan memory scan monitors memory channels in which you have stored frequencies. All-channel scan the transceiver scans all of the memory channels in which you have stored frequencies. 1 press [mr] (1s). • scan starts from the las...

  • Page 46

    Call scan you can alternate between monitoring the call channel and the current operating frequency. 1 select the frequency (in vfo or memory recall mode) you want to monitor. •in vfo mode, turn the tuning control or press mic [up]/[dwn] to select the desired frequency. •in memory recall mode, turn ...

  • Page 47

    Priority channel frequency. 2 select selective call functions, if necessary. 3 press [f]. The memory channel number appears and blinks. 4 turn the tuning control or press mic [up]/[dwn] to select the priority channel (“pr”). 5 press [mr] to store the data onto the priority channel. Using priority sc...

  • Page 48

    4 press [menu] to store the setting or any other key to cancel. 5 press any key other than [menu] to exit menu mode. The “ ” icon appears below the memory channel number, indicating the channel is locked out. 6 to unlock the memory channel, repeat steps 1 ~ 5, selecting “off” in step 3. The “ ” icon...

  • Page 49

    Selective call ctcss and dcs you may sometimes want to hear calls from only specific persons or groups. In this case, use selective call. This transceiver is equipped with ctcss (continuous tone coded squelch system) and dcs (digital coded squelch). These selective calls allow you to ignore (not hea...

  • Page 50

    Portions may cause ctcss to function incorrectly. To prevent noise from causing this problem, select an appropriate squelch level {page 14}. While transmitting the 1750 hz tone by pressing [call] {page 25}, the transceiver does not transmit the ctcss tone. Selecting a ctcss frequency 1 press [f], [m...

  • Page 51

    •to quit the function, press any key. •when a ctcss frequency is identified, the identified frequency appears and blinks. 3 press [menu] to program the identified frequency in place of the current ctcss frequency or press any other key to exit the ctcss frequency id scan. Turn the tuning control or ...

  • Page 52

    The available dcs codes are shown in the following table. 3 press [menu] to store the new code or any other key to cancel. 4 press any key other than [menu] to exit menu mode. Dcs code id scan this function scans through all dcs codes to identify the incoming dcs code on the received signal. You may...

  • Page 53

    3 press [menu] to program the identified dcs code in place of the current dcs code or press any other key to exit the dcs code id scan. •turn the tuning control or press mic [up]/[dwn] while the identified dcs code is blinking to resume scanning. 4 press any key other than [menu] to exit menu mode. ...

  • Page 54

    Pressing a key, so if the next key is not pressed within this time limit, the transceiver stops transmitting. Dtmf monitor when pressing the mic dtmf keys, you will not hear dtmf tones emitted from the speaker. However, you can monitor the dtmf tones if desired. 1 press [f], [menu] and turn the tuni...

  • Page 55

    3 press [menu]. The dtmf code entry display appears and the first digit blinks. 4 turn the tuning control to select a dtmf code. •you can also enter a dtmf code using the mic keypad. Simply press your desired dtmf codes on the keypad. •on the display, * is represented by “e” and # is represented by ...

  • Page 56

    •after transmission, the frequency display is restored. 3 release mic [ptt]. Note: if you select an empty dtmf memory channel and press [menu], the frequency display is restored. In step 2, above, you can preview the dtmf memory channels first by turning the tuning control or pressing mic [up]/[dwn]...

  • Page 57

    3 press [menu] to store the setting or any other key to cancel. 4 press any key other than [menu] to exit menu mode. When this function is activated, you cannot send dtmf tones using the mic keypad. Dtmf memory transmission is also inhibited. Auxiliary functions apo (auto power off) the transceiver ...

  • Page 58

    4 press any key other than [menu] to exit menu mode. S-meter squelch s-meter squelch causes the squelch to open only when a signal with a strength greater than or the same as the s-meter setting is received. This function relieves you from constantly resetting the squelch when receiving weak station...

  • Page 59

    Beep function the beep function provides confirmation of entry, error status, and malfunctions of the transceiver. We recommend you leave this function on in order to detect erroneous operations and malfunctions. However, to turn the beep function off: 1 press [f], [menu] and turn the tuning control...

  • Page 60

    1 while in vfo mode, press [f], [menu] and turn the tuning control to select menu no. 1 (stp). 2 press [menu] and turn the tuning control to select your desired frequency step size. 3 press [menu] to store the setting or any other key to cancel. 4 press any key other than [menu] to exit menu mode. N...

  • Page 61

    Off. Automatic backlight when using automatic backlight, the display backlight will illuminate every time a front panel or microphone key is pressed. The backlight remains on for 5 seconds before it turns off again. 1 press [f], [menu] and turn the tuning control to select menu no. 41 (abr). 2 press...

  • Page 62

    Data communication speed when the transceiver is connected to a tnc {page 7} (e market models only), you can adjust the communication speed between 1200 bps and 9600 bps. 1 press [f], [menu] and turn the tuning control to select menu no. 39 (dt). 2 press [menu] and turn the tuning control to select ...

  • Page 63

    2 press [menu] and turn the tuning control to select the programmable function from the list provided below. 59 3 press [menu] to store the setting or any other key to cancel. 4 press any key other than [menu] to exit menu mode. Programmable functions •moni: monitor function on/off •enter: used to e...

  • Page 64

    To operate the transceiver in narrow band fm: 1 press [f], [menu] and turn the tuning control to select menu no. 26 (fmn). 2 press [menu] and turn the tuning control to select“on” or “off” (default). 3 press [menu] to store the setting or any other key to cancel. 4 press any key other than [menu] to...

  • Page 65

    7 press any key other than [menu] to exit menu mode. Note: if a power-on message is not set, the transceiver model name appears when the transceiver power is turned on. Programmable vfo to limit the operating frequencies within a certain range, program the upper and lower frequency limits to the pro...

  • Page 66

    3 press [menu] to store the setting or any other key to cancel. 4 press any key other than [menu] to exit menu mode. Note: a warning beep sounds even if you set menu no. 24 (bp) to off {page 52} microphone control you can change numerous transceiver settings by operating the mic dtmf keys. The follo...

  • Page 67

    Mic lock the mic lock function disables the mic pf keys to prevent you from accidentally changing the transceiver operation. 1 press [f], [menu] and turn the tuning control to select menu no. 34 (mc.L). 2 press [menu] and turn the tuning control to select“on” or “off” (default). 3 press [menu] to st...

  • Page 68

    Trouble shooting maintenance general information this product has been factory modulated and tested to specification before shipment. Under normal circumstances, the transceiver will operate in accordance with these instructions. All adjustable trimmers, coils, and resistors in the transceiver were ...

  • Page 69

    Cleaning the keys, controls, and case of the transceiver are likely to become soiled after extended use. Remove the controls from the transceiver and clean them with a neutral detergent and warm water. Use a neutral detergent (no strong chemicals) and a damp cloth to clean the case. Resetting the tr...

  • Page 70

    • press any key other than [menu] to cancel. 4 press [menu] to reset the transceiver. “wait” appears momentarily. Vfo reset this resets the transceiver parameters excluding the dtmf memory, the memory channel contents, and the call channel contents. There are two methods available for resetting the ...

  • Page 71

    Most keys/buttons or tuning control do not function 1 one of the lock functions is on. 2 the transceiver is in channel display mode. 1 unlock all lock functions 2 with the transceiver power off, press [ ](power)+[rev] to exit channel display mode. 53,58,64,37 specifications specifications are subjec...

  • Page 72

    Models) mode f3e (fm) antenna impedance 50 usable temperature range -20℃~+60℃(-4°f~+140°f) power supply 13.8v dc±15% (11.7~15.8v) grounding method negative ground transmit (max.) 13a or less current receive (2w output) 1.0a or less frequency stability within2.5ppm size (w×h×d, projection not include...

  • Page 73

    Index 1750 hz ................................ Accessories optional ............................ Supplied ............................ All-channel scan .................. Automatic power off ............. Automatic repeater offset .... Automatic simplex check ..... Automatic dialer ....................

  • Page 74

    Frequencies, selecting direct frequency entry........ Mhz mode .......................... Vfo mode .......................... Frequency step size .............. Full reset ............................... Fuses, replacing ..................... Group scan ............................ Installation .......

  • Page 75

    Priority scan programming ..................... Using ................................. Program scan frequency range .............. Using ................................. Programmable function (pf) keys .............................. Repeater operation ............... Reset full ......................