G8JNJ
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Need to attenuate LW 252 Khz
Hi Mark,
Here's a simple notch that should do the trick and give you a 20dB deep notch on 252KHz.
It's just a series tuned circuit wired across the antenna feed into the KiWi.
You may need to fine tune… (more) -
Channel Button
Hi Stu,
This is an interesting idea, but it looks a bit cumbersome (if I understand what you are proposing correctly).
I wonder if another method would be to allow users to navigate by 'stepping'… (more) -
W/F and SND Bad Params
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Seeed Metal case and GPIO connector
Hi Glen,
I think for me the main issue is that the interconnecting cables are not all bonded to the case at the point of entry with low impedance connections.
So RF currents will flow via separate… (more) -
W/F and SND Bad Params
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Seeed Metal case and GPIO connector
Hi All,
I've had some issues with radiated noise from a KiWi that I installed on a shared site. The main issues were that it was interfering with of VHF satellite reception and degrading the GPS… (more) -
Seeed Metal case and GPIO connector
Hi All,
I've had some issues with radiated noise from a KiWi that I installed on a shared site. The main issues were that it was interfering with of VHF satellite reception and degrading the GPS… (more) -
Seeed Metal case and GPIO connector
Hi All,
Just some brief notes regarding the installation of a 15 way D connector on the Seeed metal case in order to bring out the GPIO port for use with an antenna switch.
The ventilation slot cuts… (more) -
Seeed Metal case and GPIO connector
Hi All,
I've had some issues with radiated noise from a KiWi that I installed on a shared site. The main issues were that it was interfering with of VHF satellite reception and degrading the GPS… (more) -
More GPS Problems - Damaged hardware?
Some further notes for anyone who may pick up this thread at a later date and wish to copy this information.
If you wish to split the GPS signal from the antenna to feed multiple KiWI's.
Do not attempt… (more)