Description: Coaxial construction 50 Ω Dummy Load with SO-239 UHF Socket and Voltage Measuring Port. Useful for Amateur/Ham/CB radio use and RF experiments Brief DescriptionThis dry dummy load has been designed to provide constant 50 Ω impedance to a radio transmitter to allow off air tests and experiments. Additional functionality is provided by the measuring port that allows transmitted voltage to be measured and the result used to determine power levels. The coaxial construction creates a load that presents a more stable resistance to the transmitter output over a wider range of frequencies, testing has shown the following SWR measurements using a RigExpert AA-230 Zoom, +/-: 3.8 MHz - 1.01:17 MHz - 1.02:130 MHz - 1.07:150 MHz - 1.16:170 MHz - 1.22:1145 MHz - 1.60:1 Constructed from high quality PCB material and using 20 x 1 KΩ 3 Watt Metal Film or Carbon Film resistors (see photos) the dummy load while air cooled is capable of absorbing RF energy of 40-50 Watts continuously for 1 minute, and up to 100 Watts for several seconds. While the load can also be mounted in a can with oil for longer use at 100 watts, the presence of the measuring port terminals will mean some extra steps or openings in the can will be required. Connection to the dummy load is via a high quality SO-239 UHF Connector mounted on the PCB. Overall dimensions are: 2.5" diameter, 3/4" thick (PCB sandwich, excludes SO-239). Voltage port is via red and black eyelet connectors, suitable for attaching a multimeter to for voltage measurement. Calculations for converting voltage to power are shown in one picture here and included in the user guide. Please also see the photos as these are part of the description. Note: Resistor color may vary depending on supply source. What's included for Sale?1. Fully assembled Load PCB as per above description and photos2. Quick start guide3. Link to our web site for the user guide Questions?We always respond to product related 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 Details1. Shipping is free within the USA. 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. About Feedback We always leave positive feedback after shipping your item, no exceptions.Our products and service are all designed to give you the customer a 5 Star experience, however, we understand that sometimes things can go wrong (we are only human), and occasionally we may not meet our high standards. Before leaving less than 5 Star feedback, or Neutral/Negative feedback for us, please give us an opportunity to resolve the situation to your satisfaction first. We are only an email away and will always respond.
Price: 26.99 USD
Location: Olathe, Kansas
End Time: 2024-08-05T16:19:02.000Z
Shipping Cost: N/A USD
Product Images
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)
Features: 50 Ohm
Manufacturer Warranty: 1 Year
California Prop 65 Warning: Not applicable
Custom Bundle: No
MPN: ERDL
Compatible Model: Universal
Mount Type: SO-239
Voltage: 100V
Modified Item: No
Band: universal
Unit Type: oz
Item Length: 2.5 Inch
Country/Region of Manufacture: United States
To Fit: CB Radio, Ham Radio Transceiver, Ham Radio Transmitter
UPC: Not applicable
Non-Domestic Product: No
Item Weight: 1.5
Compatible Brand: Universal
Form Factor: Disk Sandwich
Connectivity: UHF
Unit Quantity: 5
Pickup Pattern: N/A
Brand: Electro-Resales LLC
Type: Antenna
