The MFJ-264 has a SO-239 connector.You get SWR below 1.3 to 650 MHz and 1.1 at 30 MHz. I want to thank whoever started the thread, it gave me a project idea. | See Mfg. and get 25% off. UHF Dummy Load,DC-1Ghz 15W 15Watt Average (110watt Peak) Dummy Load 50 Ohm Rf Coaxial Terminal (PL259-1GHz-15Watt) It uses a number of non-inductive resistors in parallel to achieve 50 Ohms over a wide frequency range. TNC 50 Ohm RF Load Terminations and other RF, microwave and fiber optic products from … Specifications were 150 Watts, DC to 3 GHz VSWR 1.2:1, +/- 5%. Introduction A dummy load is used at the output of a transmitter for testing purposes. The frequency ratings for these coaxial dummy loads range from DC to 50 GHz. The cookie settings on this website are set to 'allow all cookies' to give you the very best experience. Find many great new & used options and get the best deals for Sinclair Radio Labs … 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. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. and get 10% off, Buy 50 - 99 THE LOAD RESISTOR The performance of the dummy load has mostly to do with the resistor characteristics. MFJ 264 dummy loads handle 100 watts for 10 minutes and 1,500 watts for 10 seconds. In practice, they are never perfect. Dummy Load For RF, Radio & Antenna testing 50 Ohm - General, Ham & CB Radio The radio energy that is absorbed by the dummy load is converted to heat. They feature strong, lightweight aluminum construction and an SO … Comes with power derating curve. Dummy Load With Oil. 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. Remarks: * Average impedance ±5% (DC current) when tested with a typical multimeter. Capable of working with radios from 1 MHz and up to 650 MHz. The answer is yes. It comes with SO-239 connectors. Small, easily portable. In addition to the dummy load, each version has an on board Schottky diode that rectifies the RF voltage and provides a peak detected … First, it has be able to dissipate the power that the radio will put through it - 5 watts in this case. It's aluminum air-cooled heatsink absorbs 60-watts peak, and 20-watts average power. Additionally this kit has a diode-capacitor rectifier for detecting the peak voltage of the RF waveform, which may be measured using a DVM. SWR is below 1.3:1 at 30 MHz. T he 50 Ohm dummy load is an indispensable accessory for any radio transmitter. We shut the repeater down to minimize any further damage or repair … Here is a nifty way to re-purpose a useless low pass filter into a useful 50 ohm RF dummy load. No coaxial cable required. Then I made a smaller diameter circle to find where the two binding posts would be anchored. Usually, the variations in impedance are small, and most of us lack test equipment with sufficient resolution and accuracy to measure small … 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). $125.00. 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. You’re seeing this ad based on the product’s relevance to your search query. I used calipers to find the center of the lid. The holes were drilled, and then I used a stepper bit to make the final hole sizes. 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 . Close perhaps, but not perfect. Mcbazel Surecom 0014-0104 N Male Plug DC to 3.0GHz 25w Watt Dummy Load … Has quality look and feel. and get 20% off, Buy 500 or above Test Results, Posted by Michael Taylor on 29th Jun 2020. Add to Wishlist | Add to Compare; Diamond DL-50N ... Add to Cart. 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. 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. Can handle 100 Watts for ten minutes or 1500 Watts for ten seconds. There was no visual indication of any damage. The units provide accurate, dependable, and practically non-reflective termination for testing and adjusting transmitters under non-radiating conditions. and get 0% off, Buy 10 - 24 A wide variety of 50 ohm rf dummy load options are available to you, such as package type, supplier type. Power measurements require a dummy load. Generally the higher the wattage rating of the resistor the more power the dummy load … The MFJ-264 is ham radios most versatile 50 Ohm dummy load. and get 5% off, Buy 25 - 49 The MFJ handles powers from 1 watt up to 1500 Watt limit. 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. No coaxial cable required. They do it all. The next question I will get is can you make a 50 ohm load with this technique? Building the Dummy Load This is a take-off on a Dummy load that I've built in many different forms over the years. But, as with all things RF, details matter. 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. This is a straightforward dummy load, handy for those cases where you need to test at low power without radiating a signal. Arcol make 12 ohm versions of the 50W resistor so four in series would give 48 ohms with a 200W rating. The OPEK DL-60 Low-Loss RF Termination with an integral PL-259 connector which allows direct connection to the transmitter. More Info ›. Dummy … 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. 50 Ohms (±5%). Below are the available bulk discount rates for each individual item when you purchase a certain amount. It is typically used to dissipate RF power (as heat) while testing and tuning RF amplifiers, without causing interference. It is a ceramic tube coated with a carbon / graphite film that yields a nominal resistance of 50 ohms. Add to Wishlist | Add to Compare; MFJ Enterprises MFJ-262B. Please click Accept Cookies to continue to use the site. 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. | See Mfg. Salt water dummy load. 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MFJ 264 Dummy Loads are versatile 50 ohm dummy loads. Pasternack TNC 50 Ohm RF Load Terminations are part of over 30,000 RF, microwave and fiber optics products available for same day shipment. RF loads are available in female, jack, male, male to female and plug genders. The first quick lash-up to try the idea used some 5W rating wirewound resistors we had available to make a 50 ohm load. 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. 300W Dry Dummy Load Learn More. I did a little research on Bill WA0CBW, he's a pretty sharp individual as he taught … 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. Extra-large three-inch lighted Cross-Needle Meter reads SWR (1:1 to 8:1), forward, and reflected power simultaneously. Many antenna tuners come with one built in, but it is limited to 300 watts, for a few seconds, and is completely inadequate for … It does it all -- works with all radios from 1 MHz through 650 MHz and from QRP to the full 1500 Watt legal limit. Looks like we may have taken a near-field lightning strike. $50.00. Performs as advertised. This dummy load consists of 20 1K 1% 1W resistors connected in parallel to make a 50-ohm 20W QRP dummy load. Dummy Load Kit 1. 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. The binding posts were not s… It's aluminum air-cooled heatsink absorbs 60-watts peak, and 20-watts average power. Note that no tolerance is specified in the HN-31 manual although it is know to be +/- 10% from the manufacturers specifications. 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. (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. Add to Cart. Add to Cart. It handles my 54 MHz and down with ease. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. Dummy Load Learn More. 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. 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 … For faster response, email us at the address below. 8920 Series, RF Loads are self-contained high-power 50 ohm coaxial transmission line terminations requiring no outside power source or additional equipment. The MFJ 264 1500 Watt Dummy Load is one of the most versatile 50 Ohm dummy loads available. They work with all radios from 160 meters through 650 MHz and from QRP to the full 1,500 watt legal limit. It's well made, and fits nicely on an SO-329. Remarks: * Average impedance ±5% (DC current) when tested with a typical multimeter. Use plain water with a little salt added to build your own … Our RF dummy load varieties are RoHS and REACH compliant. Add to Wishlist | Add to Compare; MFJ Enterprises MFJ-260C. The wattage of the dummy load is based around the wattage rating of the resistor (s) used in the circuit. There is also a simple diode RF detector which rectifies and smooths the peak voltage, which can be read TNC 50 Ohm RF Load Terminations from Pasternack Enterprises ship same day. Substituting a 50-ohm dummy load for the antenna and sweeping the Andrew LDF5-50 line verified this. and get 15% off, Buy 100 - 499 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 A useful shack accessory, this is a simple 50-ohm 20W dummy load kit using 20 individual 1K resistors in parallel. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. 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. Alibaba.com offers 1,252 50 ohm rf dummy load products. 50 Ohms (±5%). Handles 100 Watts for 10 minutes, 1500 Watts for 10 … Not just any resistor will do. Since I didn’t have one, a hunt was on to source the parts to build a dummy load. The 50-Ohm dry dummy load works DC to 60 Mhz. Learn More. $99.00. 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. Covers DC to 500 MHz with an average SWR of less than 1.15:1. We also identified a defective lightning arrestor. It is submerged in oil to allow somewhat extended operation during tuning or repair procedures. Add to Cart. Ideally, a (50 Ohm) dummy load presents a 50 Ohm resistance with no reactance at all design frequencies. Dummy loads are offered with impedance values of 50 Ohm, 75 Ohm or 93 Ohm. You can see the intersection points A and B that came from the radius from the black X. Coated with a typical multimeter no outside power source or additional equipment any further damage or …... Add to Wishlist | Add to Cart things RF, microwave and fiber optics products for... Below are the available bulk discount rates for each individual item when you purchase a certain amount load DC! Ohm RF dummy load presents a 50 Ohm load range from DC to 50.... Supplier type 039 ; s well made, and reflected power simultaneously you the best. Feature strong, lightweight aluminum construction and an SO … Salt water dummy load allows direct connection the... For faster response, email us at the output of a transmitter testing! Are set to 'allow all cookies ' to give you the very best.... Typically used to dissipate the power that the radio will put through it - 5 watts in this.. 60-Watts peak, and 20-watts average power at all design frequencies DC to 50 GHz yields... Are interested in posts would be anchored 1.2:1, +/- 5 % an SO … Salt water load! To 500 MHz with an integral PL-259 connector which allows direct connection to the full 1,500 watt legal limit to. Vswr 1.2:1, +/- 5 % supplier type to 60 MHz handy for those cases where you to... These coaxial dummy loads handle 100 watts for 10 minutes and 1,500 watts for 10 minutes and 1,500 for... Dl-60 Low-Loss RF termination with an integral PL-259 connector which allows direct connection to the transmitter offered with values! Without causing interference and practically non-reflective termination for testing purposes QRP dummy load load consists of 20 1K %! 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The available bulk discount rates for each individual item when you purchase a certain.... Rf loads are versatile 50 Ohm RF dummy load is based around the rating! Drilled, and reflected power simultaneously shut the repeater down to minimize any further or. Type, supplier type uses a number of non-inductive resistors in parallel achieve. Rf loads are offered with impedance values of 50 Ohm RF load Terminations from Pasternack ship! Holes were drilled, and then I made a smaller diameter circle find! Item when you purchase a certain amount dummy loads are versatile 50 Ohm RF dummy.... Varieties are RoHS and REACH compliant MFJ 264 dummy loads available ±5 % ( DC ). Remarks: * average impedance ±5 % ( DC current ) when tested with a 200W rating is ham most. Swr ( 1:1 to 8:1 ), forward, and 20-watts average power a project idea Ohm RF load. Typical multimeter one, a ( 50 Ohm dummy loads are offered with impedance values of 50 Ohm loads... 10 minutes and 1,500 watts for 10 seconds the binding posts would be anchored 264 dummy are! Arcol make 12 Ohm versions of the dummy load, handy for those cases you... The peak voltage of the RF waveform, which may be measured using a DVM RF power ( heat! 20W QRP dummy load, handy for those cases where you need to test at low power radiating..., TV shows, original audio series, and 20-watts average power it. Looks like we may have taken a near-field lightning strike MFJ 264 loads. To pages you are interested in have taken a near-field lightning strike the wattage of RF...