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| To: | [email protected] |
|---|---|
| Subject: | Re: LF: Signal on 137715 DFCW |
| From: | Stefan Schäfer <[email protected]> |
| Date: | Sun, 27 Jan 2013 23:30:30 +0100 |
| In-reply-to: | <op.wrk53mf9v16t3f@xn----rfameuhquf> |
| References: | <op.wrk53mf9v16t3f@xn----rfameuhquf> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 |
Hi Andy,Maybe that was me. Somehow i can see mains hum from my transmission in WSPR-15 which is 100 Hz below. I can see it on the YO/4X1RF grabber as well. Yesterday i checked my signal on a local RX and confirmed > -35 dBc main hum supression of my signal, which should be OK. A signal which is nearly 40 dB below my signal should not be visible in 1400 km distance at 20 dB SNR. Can't explain it. Maybe it is generated on the RX side?? I hope this is no actual problem. Otherwise i will try to improve things even more... Now i have 2x 820 uF / 450 VDC on the H bridge... 73, Stefan/DK7FC Am 27.01.2013 21:05, schrieb Andy: Copy some signal on 137715 DFCW! Please use longer mode for CQ DFCW-10 or QRSS-10! 73! |
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