Thank you for the measured curve of the attenuator. Half-dB Steps with 6 bit up to 31,5 is what they have, maybe is is just left out for easier operation with the incremental switches .

I haven't seen these little boards before. Thanks for the preview. As for the bent connector, I've had stuff from overseas get bent like that due to poor packaging. File a damage claim and get a replacement.

Very cool. Grabbed one

If you really want to measure the attenuation accuracy of the device, normalize the the scope response to 0 dB to compensate for the insertion loss of the cables and the device.

This looks like just the thing for my homemade signal generator. It uses the QRP-LABs VFO, GPS disciplined. thanks, Carl AB1ZI

Six bits would allow you to have 64 unique values. That's why it goes from 0 to 31.5 in .5 steps.

This would be great for a WSPR beacon to check antennas and propagation.

I recently purchased a set of in line SMA attenuators for about $40. Wish i would have seen this first for $6 i would have tried it. Oh well on the plus side my attenuators are flat across the useable range of my SA and pretty dead on. I think yours was 1.5dB off at the worst. I known thats not much just trying to make myself feel better. Thx for sharing

@IMSAIGuy

4 ай бұрын

I use inline attenuators all the time. I never use this thing

Thanks for a lot of good videos; but it would be nice if you would put a link, where to buy the giszmos you are testing. 73 de oz1gnn.

Always a pleasure to watch your videos! Keep on! 73 de DH7WX

@IMSAIGuy

3 жыл бұрын

Thanks

Hi and thanks for the video. I live close to tv broadcast tower in my area. Would this DYKB 1MHZ-3800MHz Digital programmable RF attenuator work for me in the USA?

hi ..i am a novice..i bought the vna and the tinySA.. i recently purchased a similar digital attenuator a DC-6G which i asdume is similar to the one you are testing..anyways i was told to purchase this to attenuate my Feeltech FY6800 signal generators output for generating a S9 signal to ssb a cb radios input...i csnt find any specs on what INPUT tolerance is on these digital attenuators? Please help me. cheers...ps could you test these with the TinySA? Andrew s

@IMSAIGuy

2 жыл бұрын

www.west-l.com/uploads/tdpdf/yqperegrine_hf-switch-pe4302_en.pdf

😂👍👍👍

I used that chinese attenuator, trying to reduce 10mw of an RF Pre-Amp output, for a 15 watt 87MHZ-108MHZ FM Transmitter Project , , i set it at -3db hoping to half the output, but it did not work, i got the full 10mw producing 20 watt , , , even at -10db, i still have the full 10mw, at -15 db i get 20 watt for 3 seconds then nothing, the needle drops to zero, , , when i get 20watt, i turn ithe power off after a few seconds to stop frying the MOS FET RD15HVF1 RF power Transistor, , , bloody useless chinese attenuator, , , i'm opting for a simple analogue Variable Attenuator 0-20dB that is used for 471-847mhz UHF TV frequencys, , , the specs say the Frequency Range is 5 - 1000Mhz, , , so i'm hoping it will work !!