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| To: | [email protected] |
|---|---|
| Subject: | LF: Re: Re: Re: Siemens D2006 Selective Level Meter/Pegelmesser...and W&G SPM-3 |
| From: | "Tracey Gardner" <[email protected]> |
| Date: | Mon, 4 Nov 2002 14:02:28 -0000 |
| References: | <2D280BB697C7EE4C979C5C89925418EF1BF592@TNS-FBU-2E-003.corp.telenor.no> |
| Reply-to: | [email protected] |
| Sender: | <[email protected]> |
Hello Jan-Martin The SPM-3 has a single xtal filter at the 650kHz 1st IF followed by a narrow LC filter at the 1.5kHz 2nd IF. The 1.5kHz filter is something like 100/120Hz wide at -6db. 73s Tracey SPM-3 is another interesting unit, but I believe the selectivity is based on LC-filters, and it really is too broad. Have kept a few for possible interest for 136kc activity in Norway. |
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