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PX777 Operation Guide
The Puxing PX777 is an excellent, inexpensive handheld radio. The English language documentation provided by the manufacturer, however, has considerable room for improvement. This guide covers the basics of using the PX777 in a more understandable format.
Introductory Notes
When placing the radio in its charging stand, be sure that it's inserted straight and that the battery touches the charging contacts properly. It's possible to misalign the radio, which will cause it to fail to charge. You can remove the battery from the radio and charge it separately not only is this useful for charging spare batteries, but it makes it easy to see how the battery should fit in the charger. 1 On/Off and Volume 2 Selector knob 3 PTT button 4 Monitor button 5 Call button 6 Speaker/mic jack The PX777 has a channel mode with a selfprogramming feature similar to that found on many commercial radios. This guide addresses only the PX777's memory / VFO mode, which resembles that of most modern amateur radios.
Programming
1 Turn on the radio. If you see a channel name like `CH001', you're in channel mode. Turn the radio off, hold down ENTER, and turn it back on. You should now see a frequency display. If there is a 2digit number displayed under the battery indicator, you're in memory mode. Press the VFO/MR button to select VFO mode. Enter Receive frequency from keyboard (all six numbers no decimal points) or by turning selector knob. For repeater operation, enter offset (positive, negative, or none) by pressing MENU and then *LOCK. Select offset ( , +, or 0) by turning selector knob. Press ENTER to save your selection. Press VFO/MR twice to get back to the frequency display. The default repeater split setting may be wrong, so be sure to check it press MENU and use the selector knob to select DIFFR? #14 and press ENTER. Use the selector knob or keyboard to select the repeater split. For the 2meter band in North America, this should be 0.600 MHz. Enter receiving CTCSS tone by pressing MENU and then ENTER. Turn the selector knob until RCDC? #15 is displayed. Turn the selector knob until you see the frequency you want and press ENTER. Select OFF for normal repeater operation. Enter transmit CTCSS tone by pressing MENU and then ENTER. Turn the selector knob until TCDC? #16 is displayed. Turn the selector knob until you see the frequency that you want and press ENTER. For power selection press MENU and then 4 POWER. Select H for high or L for low power and press ENTER to save your selection. To save frequency to memory press MENU and then VFO/MR. A channel number will flash on the right side of the display. Turn the selector knob to select the channel to save to, or enter the channel number from the keyboard and press VFO/MR to save.
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Scanning
To start scanning, press MENU and then 1 SCAN. To stop scanning, press ENTER or PTT. If the radio is in memory mode, it will scan memory channels. If it's in VFO mode, it will start scanning at the currently selected frequency.
Other Functions
Reverse Holding down the # T-R button for two seconds will put the radio into reverse mode, indicated by an `R' on the display. This temporarily reverses the transmit and receive frequencies used, which can be useful for bypassing the repeater when calling another station for example, one that is within simplex range but is out of range of the repeater. DTMF The number, *, and # buttons send the corresponding DTMF tones while transmitting. To send the DTMF tones for A, B, C, and D, use buttons MENU, ENTER, VFO/MR, and CALL respectively. Access to most other functions is through the MENU key. Press MENU and use the selector knob to choose a menu item. ENTER selects the item and saves selections, and VFO/MR cancels or exits.