1. పరిచయం మరియు ఓవర్view
The Dynascan P-72 is an advanced dual-band mobile amateur radio transceiver designed for reliable communication across VHF and UHF frequencies. Its compact size and robust feature set make it ideal for various amateur radio applications. This manual provides comprehensive instructions for the proper setup, operation, and maintenance of your Dynascan P-72.
ముఖ్య లక్షణాలు:
- Full Duplex Capability
- Simultaneous Reception of VHF and UHF Frequencies (144-146 MHz / 430-440 MHz)
- 20W Transmission Power
- 255 మెమరీ ఛానెల్స్
- Side Jack for Microphone-Headset or Speaker-Microphone
- Selectable Frequency Steps: 5, 6.25, 10, 12.5, 25, 50, and 100 kHz
- కీప్యాడ్ లాక్ ఫంక్షన్
- Integrated DTMF Keypad
- TOT (Time-Out Timer) Function
- VOX ఫంక్షన్
- Built-in Scanner
- Supports 53 CTCSS Tones and 108 DCS Tones
- Backlit LCD Display with Function Indicator
- Commercial FM Radio Function
- అల్ట్రా-కాంపాక్ట్ సైజు
2. ప్యాకేజీ విషయాలు
Please check the box carefully to ensure all items are present and in good condition:
- Dynascan P-72 Transceiver Unit
- Handheld Speaker Microphone with Keypad
- DC పవర్ కేబుల్
- మౌంటు బ్రాకెట్ మరియు హార్డ్వేర్

మూర్తి 2.1: Dynascan P-72 package contents, including the main transceiver unit, handheld speaker microphone, mounting bracket, and power cable.
3. సెటప్
Follow these steps to set up your Dynascan P-72 for initial operation.
3.1 మైక్రోఫోన్ను కనెక్ట్ చేయడం
Connect the coiled cable of the handheld speaker microphone to the dedicated jack on the side of the transceiver unit. Ensure the connector is fully inserted to establish a secure connection.
3.2 పవర్ కనెక్షన్
Connect the supplied DC power cable to the power input on the rear of the transceiver. Connect the other end of the power cable to a stable 13.8 VDC power source capable of supplying sufficient current (e.g., a regulated power supply or vehicle battery). Observe correct polarity (red for positive, black for negative).
3.3 యాంటెన్నా కనెక్షన్
Connect a suitable 50 Ohm dual-band antenna (VHF/UHF) to the antenna connector on the rear of the transceiver. Ensure the connection is tight and secure. Never transmit without an antenna connected, as this can damage the transceiver.

మూర్తి 3.1: The Dynascan P-72 transceiver with its handheld speaker microphone connected, showing the main display.
4. ఆపరేటింగ్ సూచనలు
This section details the basic operation of your Dynascan P-72.
4.1 పవర్ ఆన్/ఆఫ్
యూనిట్ను ఆన్ చేయడానికి, నొక్కి పట్టుకోండి శక్తి button (usually located on the front panel or microphone). To power off, press and hold the same button again.
4.2 Volume and Squelch Adjustment
- వాల్యూమ్: తిప్పండి VOL knob (or use volume controls on the microphone) to adjust the audio output level.
- స్క్వెల్చ్: తిప్పండి SQL knob to set the squelch level. Adjust it until background noise disappears, but weak signals can still be heard.
4.3 Frequency Selection (VFO Mode)
In VFO (Variable Frequency Oscillator) mode, you can directly input or tune to desired frequencies.
- నొక్కండి VFO/MR button to switch to VFO mode.
- Use the main tuning knob on the transceiver or the up/down arrows on the microphone to adjust the frequency.
- Alternatively, use the DTMF keypad on the microphone to directly enter the desired frequency.
4.4 Channel Operation (Memory Mode)
The P-72 supports 255 memory channels for storing frequently used frequencies and settings.
- నొక్కండి VFO/MR button to switch to Memory mode.
- Use the tuning knob or up/down arrows to scroll through stored memory channels.
- Refer to the full manual for detailed instructions on storing and deleting memory channels.
4.5 Transmission (PTT)
ప్రసారం చేయడానికి, నొక్కి పట్టుకోండి PTT (పుష్-టు-టాక్) button on the side of the handheld microphone. Speak clearly into the microphone. Release the PTT button to return to receive mode.
4.6 Dual Frequency Reception and Full Duplex
The Dynascan P-72 can receive two frequencies simultaneously (VHF and UHF). It also supports full duplex operation, allowing you to transmit on one band while receiving on another.
- The display will show both active frequencies.
- ఉపయోగించండి A/B button to select which frequency is active for transmission.

మూర్తి 4.1: కోణీయ view of the Dynascan P-72, highlighting the display and control knobs.
5. నిర్వహణ
Proper maintenance ensures the longevity and optimal performance of your Dynascan P-72.
5.1 శుభ్రపరచడం
Wipe the transceiver and microphone with a soft, dry cloth. For stubborn dirt, use a slightly damp cloth with mild soap, then wipe dry. కఠినమైన రసాయనాలు, ద్రావకాలు లేదా రాపిడి క్లీనర్లను ఉపయోగించవద్దు.
5.2 నిల్వ
When not in use for extended periods, store the unit in a cool, dry place away from direct sunlight, extreme temperatures, and excessive dust. Disconnect the power cable and antenna.
5.3 Antenna and Cable Care
Regularly inspect antenna connections and cables for any signs of wear, damage, or corrosion. Ensure all connections remain tight to prevent signal loss and potential damage to the transceiver.
6. ట్రబుల్షూటింగ్
If you encounter issues with your Dynascan P-72, refer to the following common problems and solutions.
| సమస్య | సాధ్యమైన కారణం | పరిష్కారం |
|---|---|---|
| పవర్ లేదు | పవర్ కేబుల్ డిస్కనెక్ట్ చేయబడింది; తప్పు వాల్యూమ్tage; ఎగిరిన ఫ్యూజ్. | Check power cable connection; verify power supply voltage (13.8 VDC); check inline fuse on power cable. |
| No Audio / Weak Audio | Volume too low; squelch set too high; microphone not connected properly. | Increase volume; lower squelch level; ensure microphone is fully inserted. |
| ప్రసారం చేయలేము | Antenna not connected; PTT button faulty; frequency out of band. | Connect antenna securely; test PTT button; ensure frequency is within 144-146 MHz or 430-440 MHz. |
| పేద రిసెప్షన్ | Antenna issue; high interference; squelch too high. | Check antenna connection and condition; move away from interference sources; lower squelch. |
| కీప్యాడ్ లాక్ చేయబడింది | కీప్యాడ్ లాక్ ఫంక్షన్ సక్రియం చేయబడింది. | Refer to the manual for the specific key combination to unlock the keypad. |
For issues not listed here, or if troubleshooting steps do not resolve the problem, please contact your dealer or a qualified service technician.
7. స్పెసిఫికేషన్లు
Detailed technical specifications for the Dynascan P-72.
| ఫీచర్ | స్పెసిఫికేషన్ |
|---|---|
| మోడల్ సంఖ్య | DYNASCAN P-72 |
| ఫ్రీక్వెన్సీ రేంజ్ | VHF: 144-146 MHz, UHF: 430-440 MHz |
| ట్రాన్స్మిషన్ పవర్ | 20 W |
| ఛానెల్ల సంఖ్య | 255 |
| ఫ్రీక్వెన్సీ దశలు | 5, 6.25, 10, 12.5, 25, 50, 100 kHz |
| ట్యూనర్ టెక్నాలజీ | UHF, VHF |
| వాల్యూమ్tage | 13.8 VDC |
| యాంటెన్నా ఇంపెడెన్స్ | 50 ఓం |
| ఆడియో అవుట్పుట్ | 2 W |
| కొలతలు (సుమారుగా) | 121.5 x 66.5 x 42.5 మిమీ |
| బరువు (సుమారు.) | 550 g (with microphone) |
| రంగు | నలుపు |
| ప్రత్యేక విధులు | Keypad Lock, Compact Design |
8. వారంటీ మరియు మద్దతు
The Dynascan P-72 is manufactured by Pihernz Comunicaciones. For warranty information and technical support, please refer to the documentation provided with your purchase or contact your authorized dealer. Keep your proof of purchase for any warranty claims.





