Dummy Load For Radio & Antenna testing - General, Ham & CB Radio

Description

50 Ω Dummy Load
Amateur/Ham/CB radio use and experiments
This dry 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 20 x 1KΩ 3 Watt Metal Film resistors a SWR of 1.1:1 is possible from 1MHz – 30 MHz, the SWR increases to 2:1 above 50 MHz
Please Note:
The resistors if  color band coded will use either the 5 color band system,
or
the older 4 color band system. We may also use carbon film resistors that are coded with the value rather than color bands.
The dummy load is air cooled and capable of absorbing RF energy of 40-50 Watts continuously for 1 minute, and up to 100 Watts for several seconds.
Load incorporates a measuring port consisting of a capacitor (650 V DC rating) and diode (BAV21) with output banana jacks allowing the load to be connected to a voltmeter, and with a simple calculation the output voltage is converted to output power.
See photos for details on the calculation and connection of test meter.
Connection to the dummy load is via a high quality BNC jack mounted on the PCB.
The PCB measures (approx.) 2.5” x 3.75” – this size makes the load able to be mounted in a quart paint can filled with non-toxic mineral oil or a wide mouth pint Mason jar similarly filled.
Please note:
Neither paint can, Mason jar or mineral oil is included in this sale, only the dummy load. Supplied as a finished PCB with all components mounted on the board this compact radio accessory is ready to go out of the box.
What's included?
1. Fully assembled Load PCB as description and photos
2. Link to our web site for the user guide
Questions?
We always respond to questions, please ask before making your purchase if any details are unclear or need clarification. Remember the photos are also part of the sale description.
Other Details
1. Shipping is free within the USA, Overseas buyers will pay shipping and import fees. We ship in  one business day after receipt of full payment.
2. Please make sure your ship to address is correct with ebay, this reduces shipping delays and issues.
3. Returns - start a return by accessing ebay customer support on your ebay account page, we generally offer 60 day return windows.
4. We provide follow up technical support after sale if needed - we are only an email away.
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