Related Manuals for Radio Shack HTX-212
Summary of Contents for Radio Shack HTX-212
- Page 1 19-1125.fm Page 1 Tuesday, August 3, 1999 9:47 AM Cat. No. 19-1125 OWNER’S MANUAL HTX-212 Two-Meter Mobile Transceiver Please read before using this transceiver.
- Page 2 19-1125.fm Page 2 Tuesday, August 3, 1999 9:47 AM INTRODUCTION Your HTX-212 Two-Meter Mobile Transceiver is an exciting addition to Radio Shack’s growing line of high-quality amateur radio equipment. It offers some of the most advanced, and most requested, features available in a mobile transceiver.
- Page 3 19-1125.fm Page 3 Tuesday, August 3, 1999 9:47 AM Extended Band Coverage — receives from 136 to 174 MHz and lets you extend transmit coverage to include 2-Meter ham, MARS (Military Ama- teur Radio Service), and CAP (Civil Air Patrol). Dual VFO (Variable-Frequency Oscillator) and Duplex Modes—...
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Page 4: Table Of Contents
Turning On/Off Your HTX-212 ......17 Resetting the HTX-212 ........17 Extending the Transmit Frequency Range . - Page 5 19-1125.fm Page 5 Tuesday, August 3, 1999 9:47 AM ADVANCED OPERATION ........26 Frequency Offset Defaults .
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Page 6: Installation
19-1125.fm Page 6 Tuesday, August 3, 1999 9:47 AM INSTALLATION UNPACKING THE TRANSCEIVER As you unpack the transceiver, check to be sure you have all the items shown in this illustration. CONNECTING THE MICROPHONE Plug the microphone’s connector into the microphone jack and clip the microphone to the holder. -
Page 7: Mounting The Htx-212 In A Vehicle
19-1125.fm Page 7 Tuesday, August 3, 1999 9:47 AM MOUNTING THE HTX-212 IN A VEHICLE When you select a mounting location for the HTX-212, be sure: • You can easily reach it • No wires or cables will interfere with the vehicle’s operation •... -
Page 8: Connecting An Antenna
CONNECTING AN ANTENNA You can connect a variety of antennas for both mobile and base-station use (see “Using the HTX-212 as a Base Station” on Page 10). Each type of antenna has its benefits. Choose the one that best meets your needs. -
Page 9: Connecting To Your Vehicle's Power
10-amp max- imum power draw. Or, if you do not want the HTX-212 to turn on and off with your vehi- cle’s ignition, connect the red wire directly to the battery’s positive (+) terminal. -
Page 10: Using The Htx-212 As A Base Station
19-1125.fm Page 10 Tuesday, August 3, 1999 9:47 AM USING THE HTX-212 AS A BASE STATION Although we designed the HTX-212 primarily for use as a mobile trans- ceiver, you can also use it as a base station. To do so, you need these items: •... -
Page 11: Using The Htx-212 With Packet Radio
19-1125.fm Page 11 Tuesday, August 3, 1999 9:47 AM USING THE HTX-212 WITH PACKET RADIO You can connect your HTX-212 directly to a packet radio terminal node controller, as shown below. -
Page 12: Connecting An External Speaker (Optional)
You can connect an external speaker to your HTX-212. Use an 8-Ohm communications or PA speaker that can handle 5 or more watts of power (such as Radio Shack Cat. No. 21-549). The speaker’s cable must end in a /8-inch plug. Simply plug the speaker cable into the HTX-212’s EXT. -
Page 13: Understanding The Htx-212
Your HTX-212 produces all 16 standard DTMF tones (0-9, Q, #, A, B, C, and D). It has six DTMF memories which can each hold up to 15 digits for quick transmission. -
Page 14: Subaudible Tone (Ctcss) Features
When a repeater uses a subaudible tone, it does not react to any transmission that does not include that tone. Your HTX-212 includes all 38 standard subaudible tones. You can set your HTX-212 to include any of these tones with your transmissions. You can also set the your HTX-212 to limit reception to only those transmissions that include the selected tone. -
Page 15: Understanding The Display
FUNC — appears after you press F. Flashes after you Hold F for at least 1 second. LOCK — appears when you lock the HTX-212’s functions. See “Locking the Controls” on Page 19. T — appears when transmit subaudible tone is turned on. See “Using Subaudible Tones”... - Page 16 DTMF — appears when you turn on DTMF squelch. See “Using DTMF Page” on Page 32. BUSY — appears when the HTX-212 is receiving a transmission. See “Receiving Transmissions” on Page 23. ON-AIR — appears when you transmit. See “Transmitting” on Page 24.
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Page 17: Basic Operation
Then it returns to the last-used settings. RESETTING THE HTX-212 When you first use your HTX-212, if it displays PLL Err or EEP Err, or if you ever want to reset the HTX-212 to the factory defaults and clear all memory, follow these steps. -
Page 18: Setting Volume And Squelch
If you do not turn SQUELCH far enough clockwise, you hear hissing between transmissions and the HTX-212 might not scan properly. USING THE LIGHT Your HTX-212 has two display light levels. To switch between the two lev- els, press F then DIM. SETTING THE POWER LEVEL Your HTX-212 has two transmit power levels. -
Page 19: Locking The Controls
LOCKING THE CONTROLS To lock the controls on the microphone (except the push-to-talk button), slide LOCK ON to the right. This does not lock the HTX-212’s front panel controls. To lock all controls except POWER, VOLUME, SQUELCH, and the push- to-talk button, press F then LOCK. -
Page 20: Tuning To A Frequency
2. Rotate TUNE, or press UP or DOWN on the microphone, to step through the frequencies. Notes: • You can set the HTX-212 to step in 5, 10, 12.5, 20, 25, 50, or 100 kHz increments. The default is 20 kHz. See “Setting the Frequency Step” on Page 21. •... -
Page 21: Setting The Frequency Step
4. Press MHz to save the setting. SETTING THE SCAN OPTIONS Storing Scan Skip Frequencies You can store up to five frequencies for your HTX-212 to skip when scan- ning. This lets you prevent the HTX-212 from stopping on beacon or packet repeater frequencies. -
Page 22: Setting The Scan Resume Condition
When you set the scan resume condition to cr (carrier), the HTX-212 resumes scanning after the carrier drops. The scan resume delay option lets you set the HTX-212 to pause before resuming so you can hear any reply. The factory default for this option is 2 seconds. -
Page 23: Setting The Scanning Range
19-1125.fm Page 23 Tuesday, August 3, 1999 9:47 AM Setting the Scanning Range When you scan in a VFO mode, the HTX-212 only scans those frequen- cies within a selected range. The factory default scanning range is 144.0 to 148.0 MHz. -
Page 24: Transmitting
Note: If auto-reply is turned on, you must hold down push-to-talk while you transmit. If auto-reply is off, you can release push-to-talk after you enter the first digit. The HTX-212 transmits for 1 second after you enter the last digit. See “Using Auto-Reply” on Page 33. -
Page 25: Limiting Transmit Duration
2. Hold F for at least 1 second. FUNC flashes. 3. Press MR. 4. Repeatedly press s until the HTX-212 displays to and either on (if the time-out option is on) or oFF (if the option is off). 5. Rotate TUNE, or press UP or DOWN on the microphone, to select on (to turn on the time out option) or oFF (to turn off the option). -
Page 26: Advanced Operation
19-1125.fm Page 26 Tuesday, August 3, 1999 9:47 AM ADVANCED OPERATION FREQUENCY OFFSET DEFAULTS When you select a frequency, the HTX-212 defaults to the following fre- quency offsets: Receive Frequency Transmit Offset 144.600 to 144.910 MHz + offset 144.910 to 145.210 MHz No offset (Simplex) 145.210 to 145.510 MHz... -
Page 27: Overriding The Duplex Offset
+, –, and no offset. The setting returns to the default if you change frequencies or turn off the HTX-212. Note: The HTX-212 will not switch to an offset that would place the trans- mit frequency out of the permitted transmit range. For example, you can- not set the offset to –... -
Page 28: Using Memory Channels
CALL again. M-CH flashes. 6. Enter the last four digits of the receive frequency. 7. Press s. The HTX-212 displays tF and the current transmit fre- quency. If you want to change the transmit frequency, enter the last four digits of the desired transmit frequency. -
Page 29: Using The Standard Memory Channels
(See “Using Subaudible Tones” on Page 33) 4. Press F, then press MR. The HTX-212 displays tF and the transmit frequency, and M-CH flashes. 5. Rotate TUNE, press UP or DOWN on the microphone, or enter the desired transmit frequency using the microphone’s keypad. -
Page 30: Tuning To A Memory Channel
F then ALM. appears on the display. The HTX-212 looks back at Memory Channel 1 every 4, 8, 12, or 16 sec- onds. If there is a transmission, the HTX-212 beeps to let you know to tune to it, if desired. -
Page 31: Using Dtmf And Subaudible Tones
STORING A DTMF SEQUENCE 1. Hold down F for at least 1 second. FUNC flashes. 2. Press DTMF. The HTX-212 displays td, DTMF 1, and the current sequence stored in DTMF Memory 1. 3. Rotate TUNE, or press UP or DOWN on the microphone, to select one of the six transmit DTMF memories (1–6) or the receive DTMF... -
Page 32: Using Dtmf Page
212 does not pass any transmission to the speaker until it receives the DTMF sequence you stored in DTMF Memory 0. If DTMF Memory 0 is empty, DTMF page does not operate. When you receive a DTMF page, the HTX-212 turns on the speaker and turns off DTMF page. Notes: •... -
Page 33: Using Auto-Reply
USING SUBAUDIBLE TONES Some repeaters require you to transmit a subaudible tone to activate them. You can set your HTX-212 to transmit any of the 38 standard sub- audible tones. You can also limit incoming reception by setting the HTX- 212 to open the squelch only when someone transmits a subaudible tone you select. -
Page 34: Setting The Subaudible Tones
Neither T nor T-SQL appears on the display. SETTING THE DTMF PAGE AND SUBAUDIBLE TONE ALERT When the alert function is turned on, the HTX-212 sounds a sequence of three tones when it receives a DTMF page (if DTMF page is activated) or a transmission that includes the correct subaudible tone (if tone squelch is activated). -
Page 35: Using The Menu
19-1125.fm Page 35 Tuesday, August 3, 1999 9:47 AM USING THE MENU Your HTX-212 has a menu that lets you select the way some of its func- tions work. The previous sections have included procedures that access this menu—this section provides an overview. Follow these steps to use the menu: 1. -
Page 36: Troubleshooting
“Extending the Transmit Frequency Range” on Page 17). PLL Err —appears if the HTX-212’s PLL (phase-locked loop) section malfunctions. If turning the HTX-212 off then back on does not correct this error, take it to your local Radio Shack store to arrange for service. -
Page 37: Replacing The Fuse
HTX-212. If the fuse frequently blows, there is a problem with the HTX-212 or its wiring. Have that problem fixed as soon as possi- ble. 4. Replace the fuse in the holder and snap it closed. -
Page 38: Specifications
19-1125.fm Page 38 Tuesday, August 3, 1999 9:47 AM SPECIFICATIONS GENERAL Frequency Range (Factory) Transmit ....... . 144.600 – 148 MHz Receive. -
Page 39: Transmitter
19-1125.fm Page 39 Tuesday, August 3, 1999 9:47 AM TRANSMITTER RF Power Output ......45 W(high)/10 W(Low) Maximum Deviation . -
Page 40: Schematics
19-1125.fm Page 40 Tuesday, August 3, 1999 9:47 AM SCHEMATICS... - Page 41 19-1125.fm Page 41 Tuesday, August 3, 1999 9:47 AM RF SCHEMATIC...
- Page 42 19-1125.fm Page 42 Tuesday, August 3, 1999 9:47 AM DIGITAL SCHEMATIC...
- Page 43 19-1125.fm Page 43 Tuesday, August 3, 1999 9:47 AM MICROPHONE SCHEMATIC...
- Page 44 Radio Shack company-owned stores and authorized Radio Shack fran- chisees and dealers. Within this period, we will repair it without charge for parts and labor. Simply bring your Radio Shack sales slip as proof of purchase date to any Radio Shack store. Warranty does not cover transportation costs.