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Total 5 documents matching your query.

1. Re: LF: 475 kHz exciter (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Sat, 26 May 2012 01:04:53 +0200; Am 26.05.2012 00:48, schrieb Stefan Schäfer: [...] and another 1 kOhm resistor in series with 2 antiserial Z-diodes should be OK [...] No, 1 Z-diode, 4.7V; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-05/msg00000.html (9,197 bytes)
2. Re: LF: 475 kHz exciter (score: 1): Author: pa3abk <[email protected]>; Date: Sat, 26 May 2012 23:10:58 +0200; On 26-5-2012 16:36, Stefan Schäfer wrote: Yes, the relais, this is what i am doing in all my HF PAs as well. I have a RX/TX relais that is bypassing the PA in RX mode. It is switched automatically, d; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-05/msg00299.html (12,470 bytes)
3. Re: LF: 475 kHz exciter (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Sat, 26 May 2012 16:36:22 +0200; Hi Jan, Am 26.05.2012 10:21, schrieb pa3abk: On 26-5-2012 0:48, Stefan Schäfer wrote: I've been thinking about using the 2nd D Flipflop of the 4013 and build a divide by 4 circuit. With this exciter; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-05/msg00361.html (12,931 bytes)
4. Re: LF: 475 kHz exciter (score: 1): Author: pa3abk <[email protected]>; Date: Sat, 26 May 2012 10:21:25 +0200; On 26-5-2012 0:48, Stefan Schäfer wrote: I've been thinking about using the 2nd D Flipflop of the 4013 and build a divide by 4 circuit. With this exciter one could easily use a HF TRX like the IC-706; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-05/msg00466.html (11,010 bytes)
5. LF: 475 kHz exciter (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Sat, 26 May 2012 00:48:14 +0200; Hi John, MF, Sounds good! How many steps left until i see you on the band? :-) These days i'm building a PA for the coming 630m band. It already works but i need a suitable VFO to drive the FETs. I'v; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-05/msg00469.html (12,198 bytes)

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