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#1
May 29th 05, 07:27 AM
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The 7030 has a low-pass image reject filter that cuts off just above 30MHz,
a low-pass filter that cuts off at 1.7MHz, and a high-pass filter that cuts off at 1.7MHz, so MW bleedthrough shouldn't be a problem. If there is enough interest, I will market a 7-band preselector. This will consist of a low-pass filter for the range below 500kHz, with bandpass filters for the ranges above 500kHz. I will use PIN diodes for range changing. Interested parties can e-mail me directly and we can go from there. Pete wrote in message oups.com... I'd be tempted to agree with you if I hadn't compared the 7030+ with my HF-150 this morning. The HF-150 was significantly less prone to overload than the 7030+, and I can't believe it would be if the latter were performing up to specs. I suspect the SD5400 mixer is damaged, since that's known to produce this sort of problem. I'm also sort of hoping it's a damaged SD5400 mixer, since that's a relatively easy thing to fix. Steve |
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#2
May 29th 05, 05:53 PM
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"Pete KE9OA" wrote:
The 7030 has a low-pass image reject filter that cuts off just above 30MHz, a low-pass filter that cuts off at 1.7MHz, and a high-pass filter that cuts off at 1.7MHz, so MW bleedthrough shouldn't be a problem. If there is enough interest, I will market a 7-band preselector. This will consist of a low-pass filter for the range below 500kHz, with bandpass filters for the ranges above 500kHz. I will use PIN diodes for range changing. Interested parties can e-mail me directly and we can go from there. Pete ----------------------------------------------------------------------- Sadly Google beat removes part of email addresses. Please email me at: r2000swler at hotmail dot com The preselector sounds interesting. Terry |
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#3
May 30th 05, 06:19 AM
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#4
May 30th 05, 07:23 AM
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"Pete KE9OA" ) writes: That's ok........my e-mail address is: Pete No, the problem is that google is masking email addresses in the newsgroup archive. This started with the new interface that became the norm back in December. Over at google, they show it like: From: "Pete KE9OA" and in the body: my e-mail address is: I've heard that if one "joins" a group over there (an additional step beyond registering to post) you do see email addresses, but I've not tried that. I suppose the only way to get around it is to use the link for replying to the author, but I've not tried that either. Michael wrote in message ups.com... "Pete KE9OA" wrote: The 7030 has a low-pass image reject filter that cuts off just above 30MHz, a low-pass filter that cuts off at 1.7MHz, and a high-pass filter that cuts off at 1.7MHz, so MW bleedthrough shouldn't be a problem. If there is enough interest, I will market a 7-band preselector. This will consist of a low-pass filter for the range below 500kHz, with bandpass filters for the ranges above 500kHz. I will use PIN diodes for range changing. Interested parties can e-mail me directly and we can go from there. Pete ----------------------------------------------------------------------- Sadly Google beat removes part of email addresses. Please email me at: r2000swler at hotmail dot com The preselector sounds interesting. Terry |
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#5
May 30th 05, 09:36 AM
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I understand what you mean..................I go through worldnet, so I see
all of the e-mail addresses. Pete "Michael Black" wrote in message ... "Pete KE9OA" ) writes: That's ok........my e-mail address is: Pete No, the problem is that google is masking email addresses in the newsgroup archive. This started with the new interface that became the norm back in December. Over at google, they show it like: From: "Pete KE9OA" and in the body: my e-mail address is: I've heard that if one "joins" a group over there (an additional step beyond registering to post) you do see email addresses, but I've not tried that. I suppose the only way to get around it is to use the link for replying to the author, but I've not tried that either. Michael wrote in message ups.com... "Pete KE9OA" wrote: The 7030 has a low-pass image reject filter that cuts off just above 30MHz, a low-pass filter that cuts off at 1.7MHz, and a high-pass filter that cuts off at 1.7MHz, so MW bleedthrough shouldn't be a problem. If there is enough interest, I will market a 7-band preselector. This will consist of a low-pass filter for the range below 500kHz, with bandpass filters for the ranges above 500kHz. I will use PIN diodes for range changing. Interested parties can e-mail me directly and we can go from there. Pete ----------------------------------------------------------------------- Sadly Google beat removes part of email addresses. Please email me at: r2000swler at hotmail dot com The preselector sounds interesting. Terry |
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