- 1. [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: Randy K4QO <k4qo@earthlink.net>
- Date: Thu, 28 Jul 2005 23:50:08 -0400
- If the amp that kicks in at the tighter bandwidths is the problem, why not just adjust the gain of that amp down a bit. Wouldn't that improve the IMD without resorting to 3rd party filters? Or is it
- /archives//html/TenTec/2005-07/msg01230.html (6,664 bytes)
- 2. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>
- Date: Fri, 29 Jul 2005 06:17:39 -0400
- IMD is the product of two or more signals. 3rd order IMD is a signal's fundamental mixing with the second harmonic of another signal... For this reason, a 10dB attenuation in the line will attenuate
- /archives//html/TenTec/2005-07/msg01231.html (7,933 bytes)
- 3. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Martin, AA6E" <martin.ewing@gmail.com>
- Date: Fri, 29 Jul 2005 10:10:45 -0400
- No amplifier is perfect, and every added amp will add to the IMD problem, especially if it's on the input side of a filter, where a broad band of interfering signals can get amplified and mixed toget
- /archives//html/TenTec/2005-07/msg01233.html (10,264 bytes)
- 4. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Fri, 29 Jul 2005 07:34:26 -0700
- That isn't quite right, Mike. This only happens when you put the attenuator in front of a non-linear amplifier. In this case, the attenuator will appear to reduce IMD products more than the fundament
- /archives//html/TenTec/2005-07/msg01234.html (10,268 bytes)
- 5. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>
- Date: Fri, 29 Jul 2005 14:50:16 -0400
- Hi Mike-- Please compare that with what I said: "For this reason, a 10dB attenuation in the line will attenuate the desired signal by that much but will attenuate the intermodulation distortion produ
- /archives//html/TenTec/2005-07/msg01237.html (11,656 bytes)
- 6. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Dave Bowker" <dbowker@mail.sjv.net>
- Date: Fri, 29 Jul 2005 15:22:08 -0400
- Crystal filters can and [DO] contribute towards IMD! I is not just the additional amplifier in the Orion that should be questioned in regards to IMD when selecting the 250/500 Hz filters! 73, Dave, K
- /archives//html/TenTec/2005-07/msg01243.html (7,754 bytes)
- 7. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Fri, 29 Jul 2005 23:07:44 -0700
- Perhaps it is just the way you worded your statement, Mike, but I took what you said to mean that an attenuator actually reduces IMD regardless of where it is in the RF chain. An attenuator can't red
- /archives//html/TenTec/2005-07/msg01247.html (15,880 bytes)
- 8. [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: Bill Tippett <btippett@alum.mit.edu>
- Date: Sat, 30 Jul 2005 08:06:09 -0400
- additional amplifier in the Orion that should be questioned in regards to IMD when selecting the 250/500 Hz filters! Absolutely correct Dave. To this day I do not believe Ten-Tec understands exactly
- /archives//html/TenTec/2005-07/msg01249.html (8,348 bytes)
- 9. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>
- Date: Sat, 30 Jul 2005 09:27:27 -0400
- In the clear light of day, reread all the words below. What you've done is take my fairly clear and correct statements, assumed that I said something I did not or assume I did not know something I di
- /archives//html/TenTec/2005-07/msg01250.html (17,355 bytes)
- 10. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>
- Date: Sat, 30 Jul 2005 17:35:04 -0400
- Compare the following two statements: 1. This only happens when you put the attenuator in front of a non-linear amplifier. In this case, the attenuator will appear to reduce IMD products more than th
- /archives//html/TenTec/2005-07/msg01257.html (22,511 bytes)
- 11. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sat, 30 Jul 2005 16:32:53 -0700
- Well frankly, Mike, it irks me a little that you made my private email public, but fair enough (I never told you not to). Please see my comments below: Let me try to explain again, Mike. In statemen
- /archives//html/TenTec/2005-07/msg01259.html (29,039 bytes)
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