I use it for NOAA APT downloads, it seems to work well.
But in low light conditions when you have a bag with both the AM and FM filters, it's impossible to tell which is which. It would be nice if they were labelled more brightly and boldly. Size 1 font red on black is almost invisible.
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OK, but FM suppression not uniform
I tested the Flamingo FM trap by setting my communications receiver to output dB(microvolts) and found the signal strengths for several local FM stations. I then inserted the Flamingo FM trap, being careful to put the antenna on the side labeled "input", and the receiver on the "output". I then went back to the same FM stations to see how much the filter had decreased the signal strength of each station. As a comparison, I tested the much more expensive Optoelectronic N-100 in the same way. The results of the attenuation of each unit (Flamingo in blue, N-100 in Orange) are shown in the graph attached to this review. As can be seen, the Flamingo does attain 40 dB of attenuation, but only over a very short span (approximately 1.5 MHz, near 94 MHz). Attenuation rapidly falls off lower and higher than this frequency. 20 dB of attenuation is achieved from about 89 - 102 MHz. By comparison, the expensive N-100 offered a much more stable attenuation of a minimum of 30 dB, and more typically 35 dB, over the entire FM band.In conclusion, OK performance for a unit costing about 1/10 of the cost of the N-100, but not meeting the description offered by the seller. Since I have only one unit, I cannot comment on unit by unit variability.
Spitzenrezensionen aus USA
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Bewertet in den USA am3. Februar 2021
Worked as expected. Eliminated overdrive ony rtl-sdr blog v3 into an active Mini-Whip.
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Bewertet in den USA am12. August 2021
I tested the Flamingo FM trap by setting my communications receiver to output dB(microvolts) and found the signal strengths for several local FM stations. I then inserted the Flamingo FM trap, being careful to put the antenna on the side labeled "input", and the receiver on the "output". I then went back to the same FM stations to see how much the filter had decreased the signal strength of each station. As a comparison, I tested the much more expensive Optoelectronic N-100 in the same way. The results of the attenuation of each unit (Flamingo in blue, N-100 in Orange) are shown in the graph attached to this review. As can be seen, the Flamingo does attain 40 dB of attenuation, but only over a very short span (approximately 1.5 MHz, near 94 MHz). Attenuation rapidly falls off lower and higher than this frequency. 20 dB of attenuation is achieved from about 89 - 102 MHz. By comparison, the expensive N-100 offered a much more stable attenuation of a minimum of 30 dB, and more typically 35 dB, over the entire FM band.
In conclusion, OK performance for a unit costing about 1/10 of the cost of the N-100, but not meeting the description offered by the seller. Since I have only one unit, I cannot comment on unit by unit variability.
In conclusion, OK performance for a unit costing about 1/10 of the cost of the N-100, but not meeting the description offered by the seller. Since I have only one unit, I cannot comment on unit by unit variability.
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Bewertet in den USA am16. Juni 2020
I have attached a photo of the filter with coax and adapters connected to it for scale. It’s pretty small (think just larger than small
Altoids box size.)
I have also attached a sweep terminated into a precision 50 ohm load. It’s not a very sharp filter profile. If you want to listen to aircraft band BUY THE V2 version of this unit. It’s a much sharper filter.
One other item. I broke the connector off of my unit the first day I owned it. They are pretty fragile. I was able to repair it with a soldering station and it works as new (sweeps same as out of box) but I would get some flexible cables to keep from stressing the SMA connections.
Consider what you need, you probably want the V2 version!
Bewertet in den USA am16. Juni 2020
For those of you wondering what you will get when you purchase this...Bewertet in den USA am16. Juni 2020
I have attached a photo of the filter with coax and adapters connected to it for scale. It’s pretty small (think just larger than small
Altoids box size.)
I have also attached a sweep terminated into a precision 50 ohm load. It’s not a very sharp filter profile. If you want to listen to aircraft band BUY THE V2 version of this unit. It’s a much sharper filter.
One other item. I broke the connector off of my unit the first day I owned it. They are pretty fragile. I was able to repair it with a soldering station and it works as new (sweeps same as out of box) but I would get some flexible cables to keep from stressing the SMA connections.
Bilder in dieser Rezension
Bewertet in den USA am3. Dezember 2020
Bewertet in den USA am15. August 2018
i got this bandstop filter and the rtl-sdr com one to use with my sdr. i tested it with one sma at the antenna and then flipped it around so the other sma was at the antenna and tested again (just in case). it doesnt hold a candle to the rtlsdr one. it has almost no affect at all. maybe i got a faulty one, it did look used when i revived it. will be returning it.
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Spitzenrezensionen aus anderen Ländern
Rene D.
Funktioniert gut!
Bewertet in Deutschland am 7. Mai 2024
Rene D.
Bewertet in Deutschland am 7. Mai 2024
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