Your cart is empty.
Your cart is empty.4.6 out of 5 stars
- #147,612 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- #19 in Fiber Optic Attenuators
1.Package:100W J-K RF attenautor 50db 1 piece .
2.Support returns if there are quality issues.
3. promise 1 year.
NH-NW
Reviewed in the United States on January 22, 2025
Excellent build quality. Well packaged. -30 dB attenuator measured -31.0 dB on a Siglent spectrum analyzer. This is within specs of +/- 1 dB.
DAVID A MAIR
Reviewed in the United States on September 24, 2024
It's very linear across HF/VHF/UHF and -40db measured so it suits my needs. I wouldn't claim the non-linearity I see above about 1.3GHz is not related to my patch leads, connectors, inut signal strength and/or proximity to my tablet doing the measuring with a few multi-GHz CPUs. However, I do see it lose coherence in my measurements above 1.3GHz, reducing attnuation level with increasing frequency above 1.3GHz, reaching -10dB ,measured close to 3GHz. It wasn't a precision analysis and what I've seen is more than sufficient for use with multiple >50W RF transmitters and should lt me drop enough power to test their outputs with confidence on a spectrum analyzer using some 2W step attenuators in series on the output of this one. Works great for me so far, I might even add a -30dB second one having seen the performance.
Nick Markowitz
Reviewed in the United States on September 1, 2024
Works well good fitting ends
E. Cernek
Reviewed in the United States on November 13, 2024
I have had an old HP 436A power meter with an 8482A power sensor for many years, but haven't used it because I needed a good 40dB pad to measure at the power levels I was interested in and over the frequency range I cared about, and these were more expensive than I wanted to spend. Then I spotted this one and decided to give it a spin. Using my nanoVNA, I characterized it from 100KHz to 500MHz. The results can be seen in the Excel plot I produced from the S2P file. The attenuation (S21) is within a few tenths of a dB of -40dB and the IRL (S11) degrades smoothly from around -35dB to around -26dB. Plenty good enough for my purposes from 160m up through the 75cm ham bands. I don't know how good the 50 ohm calibration standard is that comes with the nanoVNA; I suspect it may be as good as the pad itself. Your mileage may vary.
Stan Getsla
Reviewed in the United States on January 1, 2024
This attenuates a 100 W signal down to 10 milliwatts, or from +50dBm to +10dBm.Use N-style connector adapters to whatever connector style you wish, also available here on Amazon.Add one more 10dB "Thru-style" attenuator and you arrive at 0dBm into a spectrum analyzer when 100 watts is transmitted into the 40dB attenuator.
Brian T. Rayl
Reviewed in the United States on July 15, 2023
Happy with my purchase. It passes all of the tests using a Keysight N9918A network analyzer, start Frequency 10Mhz and stop 5Ghz measured both S21 and S22 and it came out to 29.95db attenuation at 1Ghz and almost perfect up to 3Ghz. Return loss is better then 20db all the way to 3Ghz. See S22 measurement. This will be handy for measuring power and harmonics on my ham radio equipment for years to come.
Joey Lloyd
Reviewed in the United States on December 28, 2023
Works as advertised. My only complaint would be the label sticker which lets you know important things like watts and which end is IN and OUT. The writing on the sticker rubs off and the sticker peels off too easy. I threw it away and used a paint pen to mark it properly.
Rob
Reviewed in the United States on September 22, 2021
I don't normally write reviews. I was not expecting a lot from such a low cost, high power attenuator. I was so pleasantly surprised I though I should share. I purchased the 30dB unit. I have attached the measurements that I did on the attenuator using a DG8SAQ vector network analyzer and a Siglent SSA3021X spectrum analyzer with tracking generator. As you can see, the attenuation is 30dB with less than 1dB variation from 1MHz to 2.1GHz. The VSWR is worst case 1.1:1 from 1 to 1200 MHz. Frequency ranges are the limits of my instruments. These are low power tests obviously. At least with respect to small signal performance, the device is meeting or exceeding the claimed electrical specifications.With 100W of power applied at 15MHz continuously for 2 minutes, the heat sink temperature went from 80F (ambient) to 118F, measured by thermocouple. This is uncomfortable to touch but won't start a fire.Mechanically it appears to be very well constructed, solid. I don't like the fact that it rolls around on the bench. In retrospect I would have paid a little more to get the version that has a box shaped heat sink instead of the cylindrical one that this has.Bottom line, n=1: For the price, this is the bomb. Happy attenuating.
giorgio
Reviewed in Italy on May 3, 2020
Bel prodotto lo consiglio rispetta le caratteristiche dichiarate
Recommended Products
