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| Subject: | LF: X1M Chinese QRP HF Transverter transmitting well on 475khz |
| From: | "Hans-Albrecht Haffa" <[email protected]> |
| Date: | Thu, 26 Sep 2013 11:28:15 +0200 (CEST) |
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Dear Marco,
having a look on the specifications I noticed, that the receiver seems to have a wideband ssb-xtal filter in the receiver path. For all of us of interest: Is the X1M a stable VFO to be used as a LW-MW driver or has it too a rx with good sensitivity and bandwidth for aural cw. My rx for LW and MW: EKD 300 with 100 Hz mechanical filter on the last IF (200 kHz), followed by a audio-cw-Filter (b=100 Hz/ -20 dB).
55, Hans-Albrecht
DK 8 ND
Gesendet: Dienstag, 17. September 2013 um 09:13 Uhr
Von: Marco <[email protected]> An: [email protected] Betreff: AW: LF: X1M Chinese QRP HF Transverter transmitting well on 475khz Hello Warren, Not a technical precise answer, but i did last night a quick WSPR test and the X1m 2min. transmission looked stabile on my primary receiver (see attached snapshot). In addition i received WSPR on 474.2KHz with the X1m and my FT-857 in parallel both on Miniwhip antenna without any preamp. The FT-857 received abt. 3dB better. For exampIe I didn’t had a decode with the X1M when the FT-857 shows a station with -30dB. However not so bad the result for this small box. Will try it in the next days on 137KHz with a preamp and the miniwhip antenna on both receivers.
vy73 Marco, DD7PC
Von: [email protected] [mailto:[email protected]] Im Auftrag von Lubos OK2BVG
Hello Marco and Warren! I didn´t test the stability, but there is written in the manual: "The stability 0,5 ppm" Yes, I think the same, X1M might be useful for LF and MW activities. I don´t expect, it will be better than my "big receivers", but it is really interesting.
Lubos, OK2BVG Date: Mon, 16 Sep 2013 08:47:03 -0400 Marco, Lubos, Is the frequency stability good enough for QRSS or WSPR?
73 Warren
On Mon, Sep 16, 2013 at 8:20 AM, Lubos OK2BVG <[email protected]> wrote: Hello Marco! By coincidence - I received the X1M two weeks ago :-) I haven´t tested transmitter. But the receiver is not bad, indeed (...with an external input filter , of course).
Lubos, OK2BVG
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