Reducing output power allows the transceiver to be used over shorter communication distances for longer battery life. This mode of operation allows the VX-7R to be used to drive a combination of bands functions reasonably well. The hardware modification requires the removal of small solder contacts located under the battery pack. The software modification can be made with the VX Commander software through a data interface cable. Both modifications obtain the same result, except that the software modification will be disabled if the radio is hard-reset. Due to the watertight housing of the radio, it was also airtight.
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Reducing output power allows the transceiver to be used over shorter communication distances for longer battery life. This mode of operation allows the VX-7R to be used to drive a combination of bands functions reasonably well.
The hardware modification requires the removal of small solder contacts located under the battery pack. The software modification can be made with the VX Commander software through a data interface cable.
Both modifications obtain the same result, except that the software modification will be disabled if the radio is hard-reset. Due to the watertight housing of the radio, it was also airtight. This resulted in a pressure differential between the inside of the radio and the atmosphere, caused by changes in barometric pressure or altitude. This pressure differential prevented proper oscillation of the speaker diaphragm, resulting in reduced and muffled audio output.
Yaesu remedied the problem by adding a small valve under the bottom left rubber armor, which allows equalization of the interior pressure with the atmosphere. The design change was reflected in all new radios produced from that point on, and any older radios sent in for repair are retrofitted with this modification. Some VX-7R owners complained of poor microphone sensitivity, which resulted in low audio levels on transmit.
If small holes are pierced in the rubber seal covering the microphone diaphragm, then sound waves can better reach the microphone diaphragm, resulting in better audio sensitivity.
Faults and Problems After couple of years in service the radio might become insensitive to narrow-band FM signals as it has been reported by several users. Broadcast range FM reception and transmitting on all bands is not affected. The unit can be sent to the manufacturer or authorized service center for repairs, but skilled users reported successful repairs by replacing the filter s with same or equivalent part. Since design of the intermediate frequency path is similar to other VX-series radios, the failure mode is common with other models.
The original design skips the DC blocking capacitors in the output of the filter which are otherwise recommended by the component manufacturer. The radio is designed to operate in extreme conditions. It is designed to be shockproof, and is sealed against water and chemicals, making it well-suited for emergency-services duty. Available accessories include remote microphones, earphones, barometric pressure sensor module, and adapters for digital communications modes.
There is also an optional GPS unit. It measures 2. A barometric sensor is included. The dot matrix LCD display provides Memory tag up to a maximum of 16 characters. The VX-8R is capable of being programmed with the open source Chirp software. Station List memories has increased from 40 to Heads up compass display to the GPS screen. The Message received LED flashing rate is selectable.
Archived from the original PDF on 2 May Retrieved 18 December Retrieved 12 October Retrieved 15 January Keeping the soldering iron warm. Tim Czerwonka. Retrieved 6 January CQ ham radio ed. CQ Publications. Fort v. Amateurfunk August Retrieved 8 December CQ ham radio August CQ ham radio October CQ ham radio February May Retrieved 7 December Flechtner, Ulrich.
Amateurfunk June October CQ ham radio June CQ Amateur Radio July Price, Brennan, N4QX July CQ ham radio December CQ ham radio November CS1 maint: multiple names: authors list link External links.
Yaesu VX-3R (VX 3 R VX3R) user and service manual, modifications
If you want to change direction of gaesu scan while it is un- derway, rotate the DIAL knob yaesu vx-2 manual click in the opposite direction in this case, one click counter-clockwise. Retrieved October 12, This manual provides the technical information necessary for servicing the VX-2R. Enter text from picture: Use the following yaesu vx-2 manual to activate the Set Mode: Page 7 Keep the dummy cover and screw in case you need to replace them in the future. Scanning operation is basically the same in each of the above modes. To do yaesu vx-2 manual, follow the procedure below: Connect the supplied Belt Clip, yaesu vx-2 manual with its mounting screw, to the rear panel. Selects the Reciving mnaual.
Yaesu VX-1R Manuals & User Guides
RRD is reader-supported. When you purchase through links on our site, we may earn a commission. Read more. Large display: This device has a fairly large and bright LCD display that is always highly visible in any lighting environment. Intuitive design: The intuitive design of this ham radio makes it easy for virtually anyone to use.
YAESU VX-3E Manuel
DIAL The main tuning Dial is used for setting the operating frequency, and also is used for menu selections and other adjustment. Page 5 R. Page 6 R. This feature allows you to set the squelch so that only signals exceeding a certain S-meter level will open the squelch. Transmission is possible only on the MHz and MHz bands.
VX-2 Radio Software