Yes, this device does what it says it does and the graphs presented are accurate. However, the ~6+ dB insertion loss means that if you are not running an LNA on your single wideband amplifier then it's likely that this filter will do more harm than good. The exception is that if you have a close interferer then perhaps this filter used passively could help, but in most cases without an LNA this filter's reduction of interference will not make up for the inherent 6+db of SNR loss.
I'd hoped to make a compact Stratux with only one antenna, but the need for an LNA makes the added complexity not worth the effort. I'll just use 2 antennas.
Additional Details
Small Business
Shop products from small business brands sold in Amazon’s store. Discover more about the small businesses partnering with Amazon and Amazon’s commitment to empowering them.
Small Business
This product is from a small business brand. Support small.
Frequently bought together
- +
- +
Total price:
To see our price, add these items to your cart.
Choose items to buy together.
Customers also search
Page 1 of 1Page 1 of 1
Much improved signal strength with external antenna
Reviewed in the United States on February 6, 2020
I purchased this part to facilitate connection of my Stratux to and external DME antenna (King KA-61, 960 - 1200 MHz bandwidth) using RG312 cables (also purchased on Amazon) 2 x SMA male to SMA male, and 1 x SMA male to BNC male. Very much improved signal strength - I am seeing many more towers and TIS-B traffic than with the whip antennas. A huge ground plane and uninterrupted signal path makes a big difference!! If there was a protective case available, I'd buy that too!!
Reviewed in the United States on February 6, 2020
Images in this review
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
Reviewed in the United States 🇺🇸 on May 19, 2022
Reviewed in the United States 🇺🇸 on February 9, 2022
Checks out great on a vector network analyzer
Reviewed in the United States 🇺🇸 on February 9, 2022
I tested the filter with a NanoVNA and it checks out nicely. Does a good job cutting out extra noise getting into the SDR.
Reviewed in the United States 🇺🇸 on February 9, 2022
Images in this review
Reviewed in the United States 🇺🇸 on June 7, 2021
Reviewed in the United States 🇺🇸 on February 6, 2020
Much improved signal strength with external antenna
Reviewed in the United States 🇺🇸 on February 6, 2020
I purchased this part to facilitate connection of my Stratux to and external DME antenna (King KA-61, 960 - 1200 MHz bandwidth) using RG312 cables (also purchased on Amazon) 2 x SMA male to SMA male, and 1 x SMA male to BNC male. Very much improved signal strength - I am seeing many more towers and TIS-B traffic than with the whip antennas. A huge ground plane and uninterrupted signal path makes a big difference!! If there was a protective case available, I'd buy that too!!
Reviewed in the United States 🇺🇸 on February 6, 2020
Images in this review
Top reviews from other countries
James B
Filter works very well - comes at a 5db (3db + the quited) loss though ! so be aware
Reviewed in Canada 🇨🇦 on January 11, 2023
James B
Reviewed in Canada 🇨🇦 on January 11, 2023
Due to the average insertion loss of ~6dB (meaning 1/4 the power makes it through) I would advise that a low-noise amplifier be added to your signal path ahead of the filter. Saying "978 MHz insertion loss (above 3 dB): 2.73 dB" really means that the true insertion loss is: 3 + 2.73 = 5.73dB
The filter shape for 978MHz is quite good, and you will see a 10dB reduction in unwanted signals from 967MHz to 986MHz with a steep roll-off afterwards.
The 1090 MHz filter is quite a bit more broadband, and so the 10dB edge frequencies are: 1064MHz and 1115MHz.
+------------------------+-----------+-------------+
| Measurement | 978 MHz | 1090 MHz |
+------------------------+-----------+-------------+
| Insertion loss (dB) | -5.96 | -5.79 |
+------------------------+-----------+-------------+
| -3dB Filter BW (MHz) | 19.0 | 45.0 |
+------------------------+-----------+-------------+
Images in this review
