Return items will be accepted within 40 days when is the date of receiving the goods. Customized items cannot be returned or exchanged. Items bought with an e-gift card are exchangeable only; refunds are not applicable.
Free Gift
Welcome to Roymall, your professional website for purchasing premium department store gifts. We highly value and appreciate your support, and we want to express our gratitude by adding an extra touch of excitement to your purchases. When you shop with us, you not only get to enjoy high-quality products that enhance your lifestyle, but you'll also receive an exclusive free gift with every order you place. Ready to explore our collection and find your perfect gifts? Browse our selection of premium department store items, place your order, and look forward to the excitement of your free gift arriving alongside your purchase.
Shipping Policy
We will work hard to deliver items to you after receiving your orders and make sure they arrive safely. Delivery details will be provided in your confirmation email.In most cases, orders are processed within 2 days.Under special circumstances, it will be delayed as follows: When you place an order on Saturday, Sunday or public holidays, it will be delayed for 2 days..Normally, it needs 5-7 working days (Monday to Friday) without being affected by flight delay or other environmental factors..Because our shipping service is worldwide so the delivery times will depend on your location so it may need a few times and please wait patiently if you are in remote districts or countries.
1. Return & Exchange Policy
We only accept items purchased from roymall.com. If you purchase from our local distributors or other retailers, you cannot return them on our side.Final sales items or free gifts are not acceptable for a return.To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.After receiving return instructions from us, please package up your returned items and drop your package at the local post office or another courier. We will process your return or exchange item within 3-5 working days after we receive it. The refund will be processed and credited automatically to your original method of payment.No returns or exchanges can be accepted if the product was custom produced, including custom size, custom
color, or custom printed.Need more help, please contact us. service@roymall.com or Whatsapp: +447549870296
2.Refund Policy
You'll get a full refund or 100% store credit after we receive the returned package and check it. The refund will be processed and credited automatically to your original method of payment.Please note that shipping costs and any duties or fees are not refundable. The extra shipping costs are non-refundable once the package has been shipped. You are responsible for paying these fees and we’re unable to waive or refund them, even if the order is returned back to us.Once we received and confirmed your returned item, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.If you have any problems regarding the refund process, please contact us. service@roymall.com or Whatsapp: +447549870296
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Specifications:
Power Supply Voltage: DC 4.5V-5.5V Standby Current: <25mA Transmitting Current: <150mA Output Impedance: 50 ohms Output Frequency Range: 35MHz-4400MHz Output Step: 1KHz-8KHz Output Power: -1dBm (W) @ 150MHZ (test power absolute value) about 1 mW
Features:
1. Simple RF signal source signal generator 2. Core component: avr mega8 microcontroller, cost-effective single chip, is a low-profile version of the commonly used m16. There is a 2.56v voltage regulator in the peripheral ADC, which other mid-range microcontrollers do not have. 3. Adf4351: Traditional VCO + PLL + 6 series high-speed bistable circuit. The output is obtained by frequency division, and the output is a square waves. The amplitude of the fundamental wave does not change much. 4. This product provides a signal source for the AC channel of the device under test and analyzes the frequency-amplitude characteristics of the AC channel. Please pay attention to the impedance of the measuring equipment. Package Include:
1x RF Signal Generator 1x Cable 1x Antenna
More Details: 1. The operating keyboard of this product has 15 ppt keys, 0~9 numeric keys, 10 "++" and "-" keys to adjust the use frequency, and also produce the emission output behavior. Short press "++" or "-" key step will add 1khz or minus 1khz to the original frequency output. Pressing "++" or "-" for more than 1 second will result in continuous or continuous subtraction scanning mode. The step is 1kHz at 35kHz to 138MHz; 138kHz at 138MHz. The step is 10khz at ~550mhz and 100khz at 550mhz~4000mhz. To end the scan, just press the "++" "-" button or the "OK" button. The "OK" button is the output control button. Press again to stop transmission, the emission behavior caused by "++" or "-" needs to press "OK" twice to end the transmission, the product will display ">>" in the upper right corner. When the output emission behavior occurs, the "C" key will terminate the transmission and the frequency is zero. 2. Step "<>" key, used for continuous addition and continuous subtraction scanning mode to facilitate adjustment, cycle selection step "1K", "10K", "100K", "1M". 3. By pressing the "<>" button, the new bottom LCD1602 defaults to "<1k>" step indication when it is powered on. Four types of step states can be cycled.
Roymall C.o.
Free Gift
Shipping Policy
Return Policy
Coupon Code
Direct purchase from the factory 
Electronic Components & Supplies
Module Board
RF amplifier
