Any idea how much attenuation in the MW filter, or a picture of return loss, etc? The protection circuit has a lot more to the description...curious about some of the MW filter specifics.
Thanks for offering these! I had already ordered the protection board, thinking I'll have to do something for MW attenuation when I upgrade to a larger loop antenna, too.
I have one of the Noolec MW filters, and I might get one of these to try.
I've posted this before, however there does seem to be two schools of thought.
I'm using the MW filter in line with an LNA. I have to use the MW filter before amplification, otherwise I end up with MW reflections up into the 160mtr band (if I have the MW filter after amplification.)
I'm using an LNA due to limited space for a larger antenna and local noise in an urban area.
I'd be interested to see some results in these situations? (ill order one anyway)
This is an embed external element. It can be deleted using the delete key or the backspace key. To view the full element, press the preview button below.
Comments
Any idea how much attenuation in the MW filter, or a picture of return loss, etc? The protection circuit has a lot more to the description...curious about some of the MW filter specifics.
Thanks for offering these! I had already ordered the protection board, thinking I'll have to do something for MW attenuation when I upgrade to a larger loop antenna, too.
-Nate
N8BTR
I didn't design these. Ask sales@kiwisdr.nz
Heres the MW filter response thanks to ZL2J the designer
I have ordered two of the band stop filters to try. Hopefully they will not attenuate the 630 band as much as the nooelec filters.
73
Steve KD2OM
I have one of the Noolec MW filters, and I might get one of these to try.
I've posted this before, however there does seem to be two schools of thought.
I'm using the MW filter in line with an LNA. I have to use the MW filter before amplification, otherwise I end up with MW reflections up into the 160mtr band (if I have the MW filter after amplification.)
I'm using an LNA due to limited space for a larger antenna and local noise in an urban area.
I'd be interested to see some results in these situations? (ill order one anyway)
New product accessories in our store: SDR protection circuit, MW filter
https://forum.kiwisdr.com/index.php?p=/discussion/comment/20454#Comment_20454My filter arrived today, and I must say it is better than the Noolec MW filter. I put it before the LNA, as this works the best.
The MW stations are still there, unlike the Noolec filter would kill everything from the VLF up to 1.8mhz bascially.