General standard
Frequency range	C: 136-174 MHz -	C: 440-480, C2: 400-430 MHz C5: 370-390 C6: 350-390 MHz
Single channel quantity	Max:16
Single channel interval	25 KHz / 12.5 KHz
Working voltage	7.5 V DC ± 20%
Working hours of battery (5-5-90 working circle, high power, power saving: close / on)	KNB-29N battery (1,500 mAh) about 14 hours
Working temperature *	-10 ~ +60
Frequency stability	±2.5 ppm (-30 ~ +60 )
Antenna impedance	50
Expanding frequency range of single channe	C: 38 MHz		C: 40, C2: 30 MHz
Figure (wide x high x deep) Excluding outshoots	54 x 122 x 21.1 mm (net fuselage) 54 x 122 x 33 mm (with KNB -45L/29N)
Weight (net weight)	160 g (net machine) 360 g (with KNB-29N)

TK-2207	TK-3207
Receiving machine (checked according to the TIA/EIA-603 standard)
Sensitivity (EIA 12 dB SINAD)wide/ narrow	0.25µV /0.28µV
Selective wide/ narrow	70 dB / 60 dB
Intermodulation wide/ narrow	65 dB / 60 dB
Fake single response	65dB		60dB
Audio frequency output (80 impedance)	500 mW with distortion less than 10 %
Transmitter (checked according to the TIA/EIA-603 standard)
Power output (high/low)	5 W/1 W		4W / 1W
Modulation limit	±5.0 KHz at 25 KHz ± 2.5 KHz at 12.5 KHz
Noise wave and normal wave	65dB
Modulation wide/ narrow	16K0F/11K0F3E
FM noise	45 dB / 40 dB
Modulating distortion	Less than 5%

Payment Method

Shipment Policy

• This item will be shipped from China.
• Upon receiving your payment, item(s) will be shipped within 24 working hours. (when item in stock)
• We ship the item(s) by DHL,UPS,TNT,Fedex depend on different countries, HK post, China Post, EMS is our last choice due to slow arrival. DHL, UPS is our priority due to fast delivery. Normally takes only 3-5 days.
• If package return from the courier, buyer need to pay for the shipping cost again for resending.
• If buyer wants refund for the return package, shipping cost will be deducted.
• To avoid delay caused by delivery failure, please make sure your detailed address and phone numbers registered on aliexpress systerm are both correct.
• If you want the item to be shipped to an address different from aliexpress account, please inform us by email before payment.
• Since items cannot be delivered to a PO BOX, if your address on aliexpress is a PO BOX, please email us the delivery address before payment.
• We will declare low price on the shipping invoice(usually low than $10/pcs) to reduce import tax for you.
• Tracking number will be sent to your email after dispatching.

* Import taxes may be charged by some countries' Customs, such as import
duty, value added tax, customs clearance fees etc. We have no control
over what the tax authorities would charge and the buyers are
responsible for paying the taxes. If you have any questions about
import tax, please contact the tax authorities for more detail before
bidding.

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Exchange, Refund and Return Guidelines

• We offer a 7-day exchange and refund policy for defective items and unsatisfactory purchase.
• Replacement item(s) or reimbursement(s) will be settled within 7 days from the day the customers received the original item(s).
• For refund cases, 10% of the purchase price will be deducted in the reimbursement as our administration charges and aliexpress charges.
• Return shipping costs are refundable only for successful exchange cases, i.e. for refund or non-valid exchange cases, customers should be responsible for the return shipping costs.

The return guidelines are as follows:-

• The item(s) must be returned in new condition and with all original manufacturer's packaging, including cartons, boxes, instruction manuals, blank warranty cards.
• All return item(s) must be boxed and packed securely for shipping. We are not responsible and do not accept any damages during the return delivery.
• We must to check your return shipping invoice before your return.

Tax Policy