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Reviews For: FUNtronics ADSP Filter FDS-02

Category: Filters, Audio: (DSP and others)

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Review Summary For : FUNtronics ADSP Filter FDS-02
Reviews: 5MSRP: 85.00
Description:
Mini external DSP/selectivity Filter
Product is in production
More Info: http://www.elekitsorparts.com/product/external-audio-dsp-filter-module-ssbcw/
# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
1453
K5MGK Rating: 2023-01-26
DNR Filter Works Nicely Once I Found Out How To Use It Time Owned: 3 to 6 months.
I bought this on eBay last year but hadn't gotten around to play with it much until yesterday. After much confusion on my part as to how to operate this unit, I finally found the DNR settings for use with my headphone set and Xiegu G90. I had to really turn the volume DOWN in the radio to not overdrive the audio into this filter. Once I found the correct sound level into the filter, I was pleasantly surprised how much noise was reduced while retaining the signals from operators, especially those with weaker signals. I like the two AA batteries needed to power this filter as I intend to use it portable and don't want to attach yet another device to my 12V battery. There isn't much documentation about how to use this though. If there was more instruction, I would have given it a 5 Star rating.
W4TU Rating: 2021-01-20
Fantastic for the tiny size and low power consumption Time Owned: more than 12 months.
I've had one of these units for about four years. I originally bought it to compliment my Xiegu X1M (which has since been replaced with a G1M). It does a good job of noise reduction or providing a narrower bandwidth. It can't do both at once. That's the only drawback of this unit. It is tiny, light, and runs a very long time on a single set of AA batteries. The batteries are larger than the rest of the unit.

For a rig without a narrow CW filter like my LNR Precision FX-4A, or where the filtering just isn't narrow enough, this really does help. There isn't anything out there that's better for portable ops. Better DSP units are all much larger.
N4GW Rating: 2017-09-20
Not so great Time Owned: 0 to 3 months.
Mostly a SSB user so this fell short in that area. I have a lot of noise so was looking for a nice NR filter. When NR is engaged the volume drops greatly. if you turn the volume up on the radio to compensate, it overloads the unit and causes clipping. Not a pleasant experience. It does get rid of the noise, but the volume is so low it is difficult to hear. The unit has become useless for me. I contacted Elekits who I purchased it from, and they agreed with the me that it does have low volume and they were sorry. A lot of help that did me. You live and learn
NZ8I Rating: 2016-12-21
SSB Great CW SO-So Time Owned: 6 to 12 months.
Latest review is spot on for CW- I actually only used the cw filter not the dsp filters on cw.
On ssb it has worked amazing still for me.
I am thinking the bios upgrade feature may come in handy if they sort out the cw dsp problems.

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Earlier 5-star review posted by NZ8I on 2016-09-19

Came across this brand new Chinese Micro external DSP/Selectivity Filter surfing the inter webs for new DSP products. Dudes I bought two of them this summer.
Half the price of my beloved BHI compact DSP unit. Even has selectivity filters for cw and ssb. Oh man, this baby will bring any portable or legacy ham/swl receiver into our century.
They sell them on their website and on EBAY.
I paid a summer sale price of 75.00 on the first and then chased another on EBAY for a serious discount.
Google YouTube videos to see it in action.
Look out West Mountain and BHI - new kid on the block. Same shocked feeling I had when I got my Chinese Tecsun PL-600 for ssb/cw portable receiving. Only this is way cooler.
Battery power via two AA batteries too.
73
AB2EW Rating: 2016-12-20
Update of previous review Time Owned: 0 to 3 months.
I finally heard back from my email inquiry to FUNtronics concerning the poor performance in noise reduction when receiving CW signals. They admitted that the filter is not designed to reduce noise while receiving CW. One should note, however, that their advertising and user manual makes no mention whatsoever of this limitation. Furthermore, I discovered an online video, from FUNtronics, which shows their filter reducing noise while receiving undistorted CW.