Diy kit , Air band receiver,High sensitivity aviation radio 118-136MHz AM, US $17.59 – Picture 0

Diy kit , Air band receiver,High sensitivity aviation radio 118-136MHz AM, US $17.59 – Picture 1

Diy Kit , Air Band Receiver,high Sensitivity Aviation Radio 118-136mhz Am

US $17.59

HONG KONG, Hong Kong
Jun 9th

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Air band receiver,High sensitivity aviation radio Diy kit Description: Features: Kit welding requires some electronic technology, please bring a multimeter and a soldering iron and other tools, manuals, etc. Our guide explained to prevail. Kit manual will be placed on the network for all to download. Dedicated to receiving calls between the aircraft and the tower, with the good performance of the antenna (VHF Yagi paragraph), open at the maximum acceptable within approximately 190Km between the various types of aircraft and the tower calls, like friends please pay attention. Has the following characteristics: 1, the package uses a band-pass filter, 3355 high-level, NE602 mixer, MC1350 programs in place, can receive 118-136MHz AM signal. 2, printed directly on the PCB trace inductance, greatly simplifying the assembly of difficulty, right after welding, the only devices that need to be adjusted in the week. 3, the board has to listen to the AGC circuit to ensure comfort, while avoiding the long squelch noise. 4,12 V power supply, PCB board size is 9.2 * 7.5cm, can be placed in 97 * 40 * 120mm aluminum chassis to use. Tip: Due to the VHF bands have similar propagation ---- rectilinear propagation of light, but the receiving location accessible from the airport, distance (greater than 25Km's) must be installed VHF Yagi antenna contour segment gain antenna; receiving location between the airport large obstructions (including but not limited to tall buildings, mountains, towers) is always around the obstacle, thank you! Kit Instructions This package is not soldered good, delivery is scattered all electronic components, shop display of the finished picture, purchase only reference. Frequently Asked Questions Q: What issues should pay attention to? A: VHF has been close to a straight line, so the VHF communications can not be blocked, listen to the signal tower more necessary attention to this point, listen to the aircraft entry and exit signals slightly better, because the aircraft height from the ground close to the airport, there are hundreds to thousands of meters high, so the signal can cover long distances. Meanwhile, in order to better results, we recommend using an external frame, high antennas, such as 1/4 wavelength (about 60 cm) of GP antenna or use a better VHF Yagi antenna section! In short, according to the actual environment, appropriate tie antenna, in order to achieve good results! Q: What kind of antenna to use? A: For the primary enthusiasts recommend using GP antenna or Yagi antenna, the two antennas is relatively simple, very suitable for self-control. The figure is an antenna GP, GP antenna is a planar antenna ground short, the antenna and the antenna is called Vertical ground network, is a common vertically polarized omni-directional antenna. It consists of a vertical radiator and the 3-4 root horizontally extending oscillator components. GP antenna structure is simple, easy to set up, no rotator, usually used as a fixed radio antenna, making simple. Below Yagi antenna, with good directivity and high gain, conditionally recommended to do this. Metal beams with end-fire direction perpendicular to the polarization direction of the electric field, so the antenna radiation does not produce a significant effect, the insulator may be used! ? is the wavelength in the figure, were calculated director, the main reflector and the transducer length and a, b, c, d spacing after assembly. NOTE: This product is bulk, and install it by ourselves Package Contents 100% Brand New 1x Air band receiver,High sensitivity aviation radio Diy kit We can also wholesale if you need a large quantity of item please contact us :) Shipping Info : We only accept your Paypal Address,Please Make sure it's 100% right. The items you ordered will be shipped out in 1 business day by Air Mail when your payment is clear. Country Delivery Time Working Days (not including holiday) 5-7 8-10 11-14 15-19 20-22 >25 Working Days + Saturday + Sunday 5-9 10-14 15-20 21-25 26-30 >35 United States Rate (item arrived) 9% 50% 21% 13% 7% Refund or Resend United Kingdom Rate (item arrived) 10% 62% 20% 3.5% 4.5% Refund or Resend Australia Rate (item arrived) 23% 50% 13% 8% 6% Refund or Resend France Rate (item arrived) 1.5% 20.5% 45% 23% 10% Refund or Resend Germany Rate (item arrived) 5.5% 25% 35% 19% 15.5% Refund or Resend Canada Rate (item arrived) 0.0% 44% 35% 18% 3% Refund or Resend Spain Rate (item arrived) 1.5% 25% 50% 14% 9.5% Refund or Resend Payment : We accept PayPal only. All major credit cards are accepted through secure payment processor PayPal. Payment must be received within 7 days of auction closing. If you have bought multiple items from me, you can send me one payment for all the items instead of paying for them individually. When you click the Pay Now button, eBay will automatically determine if there are other items you have won or purchased from me and will combine them for your review. Feedback We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important to us. We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help.We will try our best to solve any problem. If you have any questions, please feel free to contact us by ebay message. We will reply you within 48 Hours. Refund&Reship: If you are dissatisfied with our item or service, then please follow the good eBay practice to contact us by ebay message before leaving any feedback. We are committed to resolve all issues in a friendly and satisfactory manner. We always reply to ebay messages within 1-2 business days. If you do not get a response from us, then please check your ebay message. we only reply ebay message, no send email. Original and return Shipping Info fee will not be refunded or reimbursed under all circumstances. You must agree and acknowledge this term if you bid for this item. Therefore, please do not complain about having to ship back at your own expense. Contact US:: If have any question, Please contact us by ebay message(no e-mail). Reply within 24hours. We care about our valued buyers, if you have any questions, our Customer Service staffs will be very glad to help you. We try our best to reply to your emails as soon as possible, however, due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items. On Aug-25-15 at 06:48:09 PDT, seller added the following information:

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	Brand	UNbrandes
MPN	does not apply
UPC	does not apply