|Subject:||Re: LF: RE: Japan on 475 kHz.|
|From:||DK7FC <[email protected]>|
|Date:||Sun, 21 Dec 2014 23:40:00 +0100|
|Dkim-signature:||v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=from:message-id:date:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=IkCkS5Iu659mxyxy/rbMG17q4+fdLvjhumv1HGS1tGY=; b=iohdlMFzF5r9vlXMJOGVZuo+7rHAIhaSO83wRAgzgzVK6IwZCW2GB6kG0/A2DWxr/9 uUlgrCUG+HtmbdzkZwROoYJhh/ixsflxGtLKPM2iYBX1eJoWwemzQa6J/JFHDCWi8SDa t9ZdSl0xXQqHD+K+JH/BqdJT69M0RE3oliwd1ib2RZ3tXJ+nF3Yc29O430vcNmXakh5Z hcPKkUrzQ9j8JpZgsvIU+n96gOCyUjjOS6YqnzdE8Co8zZ9+ZUUWwOyQtgJ2kxpjjvkY m4kFh5MZfTk6FFDCHxLSKnOnBqXs8jlgyA4IokMlK6ZNxXxNPkoJGjo/NRQN16lYncPe ePAg==|
|References:||<[email protected]om> <[email protected]>|
|User-agent:||Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:126.96.36.199) Gecko/20100227 Thunderbird/3.0.3|
Hello Hideho,Wow, congrats for getting the new band! Hope there will be never ending activity on the band. Unfortunately it is not so likely to make QSOs between DL and JA on 630m but maybe some QRSS-10 with some luck :-)
Am 21.12.2014 13:20, schrieb Hideho YAMAMURA:
I would like to know the situations in the already operating stations. Do you have any BC QRM problem ? (I mean making interference, not receiving),
Never heared about BC problems as long as we have the band here.
and what care do you take ?
Avoiding significant harmonics.
For e.g. a 100W PA i'm using T80-2 cores. (T106-2 would have been better though).LPF, what kind, other means ?
How much is your harmonic attenuation ?
Don't know but obviously enough :-)
This is the circuit of a simple compact high effective class D PA running at "12V" (13.8V), producing up to 100W RF power. It has a 4f input, so you can use a 160m transmitter (2...4W RF). 1900 kHz ==> 475 kHz. Maybe useful for beginners :-)or filter attenuation ? Information highly appreciated,
https://dl.dropboxusercontent.com/u/19882028/MF/100W-475KHZ-PA.png https://dl.dropboxusercontent.com/u/19882028/MF/DK7FC%20472%20kHz%20PA%2015W%2B100W.JPG Good luck for your first experiments! :-) 73, Stefan/DK7FC
BTW, I myself, is not prepared for 630m, yet. Hideho YAMAMURA, JF1DMQ
|<Prev in Thread]||Current Thread||[Next in Thread>|
|Previous by Date:||Re: LF: Low pass filter 1 kW 136k 472 k what components to choose?, DK7FC|
|Next by Date:||Re: LF: YO grabber returns, DK7FC|
|Previous by Thread:||RE: LF: RE: Japan on 475 kHz., Hideho YAMAMURA|
|Next by Thread:||RE: LF: RE: Japan on 475 kHz., Hideho YAMAMURA|
|Indexes:||[Date] [Thread] [Top] [All Lists]|