JPC-7 Multi-band Antenna Portable Shortwave Antenna Set With Carry Bag

Description

Product Description
Features:
* Brand new and high quality
* Made of high quality materials,
* JPC-7 is a mini portable antenna designed for field communications. Installation is easy and quick. It can be completed by o ne person in 5 minutes.
* This antenna optimizes its induction coil and increases the strength of the shrapnel, making the contact between the coil and the shrapnel more reliable. The new coils are labeled with turns for the 20 meter and 40 meter bands respectively. Even without talent, you can easily set up and adjust your antenna. When using the 20-meter frequency band, just move the slider contact to the gold mark position, and then shorten the single-sided whip antenna by about 10cm. Finally, slightly adjust the whip antenna according to the frequency you need. When using the 40-meter band, move the slider contact to the silver marked position and pull out the whip antenna to use it directly.
* This antenna is a mini portable antenna designed for on-site mobile communications. It can work for 2, 6, 10, 12, 15, 17, 20, 30, and 40 meters, and the length after shrinkage is 34.5 cm.
* Two oscillators spread out to 6.6 meters.
* Easy to set up. All you need is a support pole and feeder, everything else is taken care of for you. In addition, if you like the GP installation method, you can purchase additional ground nets and ground anchors to form an exquisite set of PAC-12. Such a set of antennas is equivalent to o ne JPC-7 and o ne PAC-12, which is very economical.
* Personal call signs can be produced by la ser engraving. If necessary, please contact us.
* The coil former and base are die-cast and handmade. It is made of nylon and has very high strength. Don't worry about damage.
* The aluminum tube is sandblasted and oxidized to black, which is very beautiful and .
* Setup is quick and easy. It can be completed by o ne person in 5 minutes.
* The aluminum parts in the connector base have been replaced with copper parts, which are stronger and more .
* The special black handbag perfectly protects the antenna and is easy to carry.
Precautions:
1. The assembly sequ ence of each antenna element is: connector - two sections of aluminum tube - induction coil - whip antenna.
2. When using an antenna analyzer with low transmit power, do not coil the feeder. All feeders must be opened, otherwise it will affect the regulation of standing waves. When using higher power antenna analyzers, there are no requirements on the shape of the feed line.
3. The first circle is near the whip antenna. Count from the side with the fixed coil screw, and the half turn with the screw is not counted.
4. When adjusting the standing wave, if you have an antenna analyzer, first find the lowest point of the standing wave and check the resonant frequency. If the resonant frequency is high, the antenna is short. It is necessary to lengthen the whip antenna or increase the number of turns of the induction coil. If the resonant frequency is low, shorten the whip antenna or reduce the number of turns of the induction coil. If you don't have an antenna analyzer, use the standing wave meter that with your radio. Set the radio to FM, AM or RTTY mode and reduce transmit power to around 10W. Press the transmit button, rotate the RF knob, find the minimum point of the standing wave in each frequency band, check the resonant frequency, and then adjust it using the above method.
Reference data:
- 40-meter band: 7.050 - Counting from the side of the aluminum tube, that is, the 5th and 4th circles (silver mark position), pull out the rod antennas on both sides, the standing wave of 7.050 is 1.2-1.5.
- 20 meter band: 14.270 - Circles 7 and 9 (gold mark positions) from the side of the whip antenna. After pulling out all 10 sections of the whip antenna, shorten o ne side of the whip antenna by about 10 centimeters. Note that it is the whip antenna on o ne side that is shortened and no adjustment is needed on the other side.
- 15 meter band: 21 megabytes is a whip antenna with two turns on each side, with the pole fully extended.
- 10 meter band: Pull out all ten whip antennas, then retract o ne of the whip antennas approximately 7 cm. The standing wave of 29.600 is 1.2. NOTE: No induction coil is required.
attention:
The above data is the data when the antenna is set up at the maximum angle of positive V. When the angle changes, the data will be different.
Package Included:
1 x connector base (material: nylon)
2 x multi-band coils (material: nylon)
4 x black aluminum oxide tube 19 x 320mm
2 x 2.5M stainless steel whip antenna
2 x screws
2 x copper connecting parts for positive V mounting
1 x fabric tote bag
1 x aluminum adapter for tripod
Note:
1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2.Please allow slight manual measurement deviation for the data.
Payment
Payment must be completed within 5 days. If you have any problems about payment, please contact us via ebay message.
Delivery details
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