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Flamingo FM Broadcast Bandstop Applications Review

6

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Average

Revainrating 3.5 out of 5  
Rating 
3.7
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Details

AntennaRadio
BrandNooElec
ColorBlack

Description of Flamingo FM Broadcast Bandstop Applications

A high-quality, high-performance bandstop filter designed for software defined radio (SDR) applications. Includes free male SMA-male SMA barrel connector!. Flamingo FM was designed to provide approximately 40dB attenuation for broadcast FM frequencies, while ensuring that adjacent bands are minimally affected. The -3dB rolloff of the filter is 80MHz and 115MHz, which means the VHF airband (108-137MHz) is minimally affected. The minuscule out-of-band insertion losses means the filter can stay in place for most any application. The filter is fully EMI shielded, and installed in a custom black anodized aluminum enclosure for further protection and isolation. The front end is protected by an RF-rated ESD diode, which provides protection not just for your filter, but also the radio or SDR behind it. Flamingo FM is a proper bandstop filter, so you are able to pass-through DC (bias-tee) power when required. DC current handling is 250mA (min), and the maximum recommended signal level is 18dBm (5Vp-p), so there is no issue using the filter for higher-power applications.

Reviews

Global ratings 6
  • 5
    2
  • 4
    0
  • 3
    4
  • 2
    0
  • 1
    0

Type of review

Revainrating 5 out of 5

Works great for filtering FM stations.

Ideal for filtering FM stations. My only issue is that the input and output are not marked on the case (the only reason it lost the star), I had to open it up to check which antenna input and output is for the SDR.

Pros
  • Satisfied so far
Cons
  • Long delivery

Revainrating 3 out of 5

Works and can work with 5W transmitter.

I installed this on a Baofeng that has lost sensitivity due to a 1 mile away transmission tower and it makes a huge difference in 2M reception. Sometimes I can run APRS packets over it and it works like a champ.

Pros
  • Very Impressive
Cons
  • Some Flaws

Revainrating 3 out of 5

not working - radio antennas

I have this bandpass filter and rtl-sdr com to use with my sdr. I tested it with one SMA on the antenna and then flipped it over so the other SMA was on the antenna and tested again (just in case). it doesn't go hand in hand with rtlsdr. it has almost no effect. maybe I got a broken one, it looked really used when I revived it. will return it.

Pros
  • slim design
Cons
  • volume

Revainrating 5 out of 5

Works as advertised

I've had this filter for about a month now. I characterized it several times with different spectrum analyzers. This is a decent band for commercial FM, but it doesn't roll off the low-frequency aviation VHF band. Ideal. The small box seems worth the extra premium compared to the bare Distill filter inside. Additional mechanical protection is good. The filter appears to be balanced no matter which connector is connected to the antenna. I rate it A. 5/5 stars.

Pros
  • Nice to use
Cons
  • old

Revainrating 3 out of 5

Think what you need, you probably want the V2 version!

For those of you wondering what you're getting with your purchase. For scale, I've attached a photo of the filter with a coax cable and adapters attached to it. It's quite small (slightly larger than the size of the SmallAltoids box, I think). I also connected the sweep to a precision 50 ohm load. This is not a very sharp filter profile. If you want to hear a group of planes, BUY the V2 version of this device. This is a much sharper filter. Another point. The first day I owned it, the connector

Pros
  • Impressive
Cons
  • Boring Packaging

Revainrating 3 out of 5

Good but FM rejection is uneven

I tested the Flamingo FM Trap by setting my communications receiver to dB (microvolts) output and determining the signal strength for several local FM stations have. Then I inserted the Flamingo FM trap and placed the antenna on the side marked "in" and the receiver on the "out" side. I then returned to the same FM stations to see how much the filter reduced each station's signal strength. For comparison, I tested the significantly more expensive Optoelectronic N-100 in the same way. The decay…

Pros
  • GOLS certified
Cons
  • Only available in black