Description: QRP 50 Ω Dummy Load for Amateur/Ham radio use and experiments. Fully Built - Not a Kit This dummy load has been designed to provide constant 50 Ω impedance to a radio transmitter to allow off air tests and experiments. Constructed of high quality PCB material and using 4 x 200 Ω 3 Watt Metal Film resistors a SWR of 1.0:1 is possible from 1MHz – 100 MHz, the SWR increases to 1.1:1 above 110 MHz, Upper limit before SWR rises to 2.5:1 is 200Mhz The dummy load is air cooled and capable of absorbing RF energy of 10 - 12 Watts continuously for 1 minute, and up to 25 Watts for several seconds. The dummy load incorporates a measuring port consisting of a capacitor (630 V DC rating) and diode (BAV21) with output terminals allowing the dummy load to be connected to a voltmeter, and with a simple calculation the output voltage is converted to output power; Calculation = Voltage Squared / 100 = Watts Out. For example measured voltage = 25 VDC, which is 625 squared, divide 625 by 100 = 6.25 Watts Connection to the dummy load is via a high quality Male BNC jack mounted on the PCB, by request this can be changed to a female jack of the same (chassis) style if needed. The PCB measures (approx.) 1.25” x 2.25” – it takes up no room in your 'go-bag' and allows a portable QRP radio to be tested without transmitting on air.The load can also be used as a 50Ω test load, for checking antenna analyzer accuracy or other tests where a discrete 50 Ω reference is needed.Please note: Sale is for dummy load only Supplied as a finished PCB with all components mounted on the board this compact radio accessory is ready to go out of the box. Questions – Please ask, if you don’t see the answer in my description Free shipping & Hassle free returns guaranteed
Price: 11.69 USD
Location: Olathe, Kansas
End Time: 2023-11-07T02:28:38.000Z
Shipping Cost: 0 USD
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Item Specifics
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 60 Days
Refund will be given as: Money back or replacement (buyer's choice)
Return policy details:
Features: Low Power
California Prop 65 Warning: Not applicable
Custom Bundle: No
MPN: ER-QRPL
Compatible Model: Universal
Modified Item: No
Band: HF
Unit Type: oz
Country/Region of Manufacture: United States
To Fit: CB Radio, Ham Radio Transceiver, Ham Radio Transmitter, Marine Radio, Two-Way Base Radio, Walkie Talkie
UPC: Not applicable
Non-Domestic Product: No
Compatible Brand: Universal
Unit Quantity: 4
Brand: Electro-Resales
Type: Dummy Load
