For faster response, email us at the address below. Below are the available bulk discount rates for each individual item when you purchase a certain amount. The wattage of the dummy load is based around the wattage rating of the resistor (s) used in the circuit. Introduction A dummy load is used at the output of a transmitter for testing purposes. Arcol make 12 ohm versions of the 50W resistor so four in series would give 48 ohms with a 200W rating. TNC 50 Ohm RF Load Terminations and other RF, microwave and fiber optic products from … The first quick lash-up to try the idea used some 5W rating wirewound resistors we had available to make a 50 ohm load. 100 WATT DUMMY LOAD PROJECT FOR $1 About 5-6 months ago there was a thread on QRZ about some 100 watt 50 ohm dummy load RF resistors on eBay. A search on the Farnell™ website found a Bourns™ 50 ohm 150 watt terminator 6 mm x 9 mm x 1 mm thick at a very reasonable price. Has quality look and feel. It handles my 54 MHz and down with ease. Capable of working with radios from 1 MHz and up to 650 MHz. Please click Accept Cookies to continue to use the site. Ideally, a (50 Ohm) dummy load presents a 50 Ohm resistance with no reactance at all design frequencies. I did a little research on Bill WA0CBW, he's a pretty sharp individual as he taught … Extra-large three-inch lighted Cross-Needle Meter reads SWR (1:1 to 8:1), forward, and reflected power simultaneously. Dummy Load Learn More. Add to Cart. The 50-Ohm dry dummy load works DC to 60 Mhz. The holes were drilled, and then I used a stepper bit to make the final hole sizes. Find many great new & used options and get the best deals for Sinclair Radio Labs … The dummy load ordinarily should be a pure resistance; the amount of resistance should be the same as the impedance of the antenna or transmission line that is used with the transmitter (usually 50 Ω or 75 Ω). MFJ 264 Dummy Loads are versatile 50 ohm dummy loads. No coaxial cable required. In practice, they are never perfect. Dummy Load Kit 1. UHF Dummy Load,DC-1Ghz 15W 15Watt Average (110watt Peak) Dummy Load 50 Ohm Rf Coaxial Terminal (PL259-1GHz-15Watt) $99.00. Add to Wishlist | Add to Compare; Diamond DL-50N ... Add to Cart. Add to Wishlist | Add to Compare; MFJ Enterprises MFJ-262B. The OPEK DL-60 Low-Loss RF Termination with an integral PL-259 connector which allows direct connection to the transmitter. 50-Ohm VHF UHF Dummy Load 60-Watt DC to 500 MHz PL-259 - DL60, Canadian Marconi DA-437/GRC-103 | 50-Watt Military Radio Dummy Load, OPEK DU-500UF - HF VHF UHF Ham Radio Duplexer - SO-239 Connectors, OPEK DU-500UM - Ham Radio HF VHF UHF Duplexer, OPEK CX-201U - 2-Way Coaxial Antenna Switch - SO-239 UHF Connectors, Buy 1 - 9 Here is a nifty way to re-purpose a useless low pass filter into a useful 50 ohm RF dummy load. and get 10% off, Buy 50 - 99 It's aluminum air-cooled heatsink absorbs 60-watts peak, and 20-watts average power. The MFJ-264 is ham radios most versatile 50 Ohm dummy load. It is a ceramic tube coated with a carbon / graphite film that yields a nominal resistance of 50 ohms. Our RF dummy load varieties are RoHS and REACH compliant. A basic dummy load is made up from a NON-INDUCTIVE resistor with a final value of 50-Ohms, so it matches up to 50-Ohm transmitters. Generally the higher the wattage rating of the resistor the more power the dummy load … This is a straightforward dummy load, handy for those cases where you need to test at low power without radiating a signal. 50 Ohms (±5%). In addition to the dummy load, each version has an on board Schottky diode that rectifies the RF voltage and provides a peak detected … It uses a number of non-inductive resistors in parallel to achieve 50 Ohms over a wide frequency range. 8920 Series, RF Loads are self-contained high-power 50 ohm coaxial transmission line terminations requiring no outside power source or additional equipment. Alibaba.com offers 1,252 50 ohm rf dummy load products. It comes with SO-239 connectors. | See Mfg. Learn More. Covers DC to 500 MHz with an average SWR of less than 1.15:1. THE LOAD RESISTOR The performance of the dummy load has mostly to do with the resistor characteristics. We also identified a defective lightning arrestor. The MFJ-264 has a SO-239 connector.You get SWR below 1.3 to 650 MHz and 1.1 at 30 MHz. Can handle 100 Watts for ten minutes or 1500 Watts for ten seconds. Your recently viewed items and featured recommendations, Select the department you want to search in, All customers get FREE Shipping on orders over $25 shipped by Amazon, SVS SoundPath Subwoofer Isolation System, 4-Pack, SVS SPWADAPT Soundpath Wireless Audio Adapter - Black, SVS SoundPath 2M RCA SoundPath Audio Interconnect. Additionally this kit has a diode-capacitor rectifier for detecting the peak voltage of the RF waveform, which may be measured using a DVM. But, as with all things RF, details matter. They feature strong, lightweight aluminum construction and an SO … Attention California Residents: Proposition 65 WARNING - Some of the products purchased through our website may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Note that no tolerance is specified in the HN-31 manual although it is know to be +/- 10% from the manufacturers specifications. Dummy Load With Oil. $50.00. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. and get 5% off, Buy 25 - 49 TNC 50 Ohm RF Load Terminations from Pasternack Enterprises ship same day. Then I made a smaller diameter circle to find where the two binding posts would be anchored. There was no visual indication of any damage. The top countries of suppliers are China, Hong Kong S.A.R., from which the percentage of 50 ohm dummy load supply is 99%, 1% respectively. Performs as advertised. You’re seeing this ad based on the product’s relevance to your search query. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. Remarks: * Average impedance ±5% (DC current) when tested with a typical multimeter. Mcbazel Surecom 0014-0104 N Male Plug DC to 3.0GHz 25w Watt Dummy Load … There's a problem loading this menu right now. MFJ 264 dummy loads handle 100 watts for 10 minutes and 1,500 watts for 10 seconds. It does it all -- works with all radios from 1 MHz through 650 MHz and from QRP to the full 1500 Watt legal limit. DL50-NMRA-1 Right Angle Type-N Male Dummy Load/Termination, 60 Watts, 50 ohm, Black Anodized Heatsink, (Clean Used) Add to Wishlist | Add to Compare; DL50-NM-1 Dummy Load, 50 watt, Type-N Male, (Clean Used) Regular Price: $69.95 . I want to thank whoever started the thread, it gave me a project idea. | See Mfg. Add to Wishlist | Add to Compare; MFJ Enterprises MFJ-260C. Building the Dummy Load This is a take-off on a Dummy load that I've built in many different forms over the years. A 50 ohm dummy load Make your own dummy load with two 100-ohm 5W resistors Building a dummy load Building a Dummy Load and Measuring Power Accurately by Ken, K4EAA A low cost dummy load This article describes a low-cost, low-to-moderate power dummy load, which presents a 50-Ohm resistive load from HF … MFJ 264 dummy loads handle 100 watts for 10 minutes and 1,500 watts for 10 seconds. This dummy load consists of 20 1K 1% 1W resistors connected in parallel to make a 50-ohm 20W QRP dummy load. A useful shack accessory, this is a simple 50-ohm 20W dummy load kit using 20 individual 1K resistors in parallel. Dummy loads are offered with impedance values of 50 Ohm, 75 Ohm or 93 Ohm. (Refer to drawing and photo below) Editors Note: This simple project enables you to build a very small QRP 50 ohm dummy load that fits inside a suitable sized pill bottle and can take up to 10 watts of rf on hf. It's aluminum air-cooled heatsink absorbs 60-watts peak, and 20-watts average power. Substituting a 50-ohm dummy load for the antenna and sweeping the Andrew LDF5-50 line verified this. The MFJ 264 1500 Watt Dummy Load is one of the most versatile 50 Ohm dummy loads available. Add to Cart. Comes with power derating curve. First, it has be able to dissipate the power that the radio will put through it - 5 watts in this case. Dummy Load The QRPkits.com 10 Watt (DC-150MHz) 50 Ohm Dummy Load/Power Meter kit is available as either a through hole, or SMT (Surface Mount Technology) version. MWRF Source SMA Male RF Dummy Load, 50 Ohm (10W (DC - 3GHz)), FREE Shipping on orders over $25 shipped by Amazon, BECEN 100W N- Male Connector Dummy Load, RF Termination Load,DC to 3 GHz, 50ohm, Mcbazel Surecom 0014-0104 N Male Plug DC to 3.0GHz 25w Watt Dummy Load 50 Ohm Rf Coaxial Terminal, Mcbazel Surecom 0014-0086 N Male Plug DC to 3.0GHz 50w Watt Dummy Load 50 Ohm Rf Coaxial Terminal, MFJ Enterprises Original MFJ-260C Dummy Load, 300 Watt, 0-650 MHz, Dry, BECEN 100W 7/16(DIN) Male rf Dummy Load,DC to 3GHz,50ohm, BECEN 100W N-Female Connector Dummy Load,RF Termination Load,DC to 3 GHz,50ohm, MWRF Source PL259 Male UHF RF Dummy Load, 50 Ohm (15W DC - 1GHz), MWRF Source N Male RF Dummy Load, 50 Ohm (100W DC - 3GHz), Actmei 5pcs 100W 50ohm Dummy Load RF RFP 1109 Resistor Microwave Power Resistor Watt 50Ω 0-6GHz, MWRF Source 25-Watt N Female RF Dummy Load, 50 Ohm, DC-3G, CESS BNC Male Plug RF/Coaxial Connector Adapter 50 OHM End Terminator (LW) (2 Pack), 5pcs SMA Male Connector RF Coaxial Matched Terminator Termination Load 50 Ohm 2W Connectors Gold Plating Surface, Mcbazel Surecom 0014-0103 AHUAGO 5W 50 OHM + - 0.5 SMA-J DC-6GHz RF Dummy Load, CB Coax Cable 25ft, RG8x Coaxial Cable 25ft, RFAdapter UHF PL259 Male to Male Low Loss CB Antenna Cables, 50 Ohm for HAM Radio, Antenna Analyzer, Dummy Load, SWR Meter, 5pcs Coaxial Terminators SMA Male Connector RF Coaxial Matched Terminator Termination Load 50 Ohm 2W SMA Terminator, DHT Electronics RP-SMA Male Jack Center coaxial Termination Loads 1W 3.0GHz 50 ohm Pack of 2, DGZZI 2-Pack RF Coaxial Adapter BNC to Termination Dummy Loads 1W 50 ohm Coax Jack Connector BNC Male to Termination Load 50 ohm. The circuit for a dummy load is stupid (heh) simple - it's literally just a 50-ohm resistor across the antenna connector's inner conductor and shield. The MFJ handles powers from 1 watt up to 1500 Watt limit. No coaxial cable required. It is submerged in oil to allow somewhat extended operation during tuning or repair procedures. and get 15% off, Buy 100 - 499 I can't say I really stress tested it, but it didn't overheat with moderate power, and the RigExpert sees it as 50 Ohms. Handles 100 Watts for 10 minutes, 1500 Watts for 10 … The radio energy that is absorbed by the dummy load is converted to heat. The 50-Ohm MFJ 264 Dummy Load works with all radios from 160 meters through 650 MHz and from QRP to the full 1,500 watt legal limit. Many antenna tuners come with one built in, but it is limited to 300 watts, for a few seconds, and is completely inadequate for … T he 50 Ohm dummy load is an indispensable accessory for any radio transmitter. A wide variety of 50 ohm dummy load options are available to you, There are 683 suppliers who sells 50 ohm dummy load on Alibaba.com, mainly located in Asia. One caveat - if you use a barrel connector to mate it with, say, the PL-259 end of a cable, it can be tricky to get it off the barrel when you're done. 50-Ohm - Dummy Load - DC to 500 MHz The OPEK DL-60 Low-Loss RF Termination with an integral PL-259 connector which allows direct connection to the transmitter. They work with all radios from 160 meters through 650 MHz and from QRP to the full 1,500 watt legal limit. Not just any resistor will do. A wide variety of 50 ohm rf dummy load options are available to you, such as package type, supplier type. Remarks: * Average impedance ±5% (DC current) when tested with a typical multimeter. Test Results, Posted by Michael Taylor on 29th Jun 2020. More Info ›. Usually, the variations in impedance are small, and most of us lack test equipment with sufficient resolution and accuracy to measure small … SWR is below 1.3:1 at 30 MHz. Specifications were 150 Watts, DC to 3 GHz VSWR 1.2:1, +/- 5%. Small, easily portable. The next question I will get is can you make a 50 ohm load with this technique? Close perhaps, but not perfect. Power measurements require a dummy load. Pasternack TNC 50 Ohm RF Load Terminations are part of over 30,000 RF, microwave and fiber optics products available for same day shipment. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. and get 0% off, Buy 10 - 24 and get 25% off. 50 Ohms (±5%). 300W Dry Dummy Load Learn More. Salt water dummy load. Use the connector end of a 12" scrap of RG-58 coax with a PL-259, or the connector of your choice on one end. I used calipers to find the center of the lid. There is also a simple diode RF detector which rectifies and smooths the peak voltage, which can be read Add to Cart. You can see the intersection points A and B that came from the radius from the black X. Since I didn’t have one, a hunt was on to source the parts to build a dummy load. The cookie settings on this website are set to 'allow all cookies' to give you the very best experience. They do it all. It is typically used to dissipate RF power (as heat) while testing and tuning RF amplifiers, without causing interference. It's well made, and fits nicely on an SO-329. Use plain water with a little salt added to build your own … Dummy Load For RF, Radio & Antenna testing 50 Ohm - General, Ham & CB Radio The answer is yes. RF loads are available in female, jack, male, male to female and plug genders. and get 20% off, Buy 500 or above $125.00. The units provide accurate, dependable, and practically non-reflective termination for testing and adjusting transmitters under non-radiating conditions. We shut the repeater down to minimize any further damage or repair … If you had a known good 50 Ohm Dummy Load and disconnected the RF cable from the GP-6, connected it to the 50 Ohm Dummy Load, re-measured the VSWR again and it read high, this would point the problem directly at the transmission line. Looks like we may have taken a near-field lightning strike. The binding posts were not s… The frequency ratings for these coaxial dummy loads range from DC to 50 GHz. Dummy … Three-Inch lighted Cross-Needle Meter reads SWR ( 1:1 to 8:1 ), forward, and 20-watts average power used. Ten minutes or 1500 watts for 10 minutes and 1,500 watts for 10 seconds are in! Make a 50-Ohm 20W QRP dummy load products Results, Posted by Taylor! Mfj-264 is ham radios most versatile 50 Ohm dummy load works DC to 60 MHz SWR... 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