[1000mp] Important question

[Hans Remeeus]

Hello Yari,

You are right, sorry. I meant Band Pass Filter.

Please have a look at http://www.remeeus.nl/pch/DSC_0654.jpg for some 
examples.

We used these filters during the special event PC100H: 
http://www.remeeus.nl/pch/pc100h_nl.htm.

Such filters we have used are home made and will reduce the harmonics 
until a certain value, but not for 100%. You still will hear harmonics. 
As Jeff wrote: stay away from the harmonic frequencies during such 
occasions.


73,
Hans Remeeus (PA1HR)
http://www.remeeus.nl
Communication is about people, the rest is technology.




Yuri Onipko schreef:
> 
>> Hello Noel,
>>
>> The best way to reduce harmonics is to use a good Low-Pass Filter. A
>> good Antenna Tuner will be helpful too.
>>
>>
> 
> Hi Hans.
> How can you reduce a 2nd (and other harmonics) of, let say, 40 m signal with
> Low Pass filter having cut-off frequency of 30 MHz?
> I think you meant Band Pass Filter...
> 
> 73, VE3DZ
> 
>