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Total 8 documents matching your query.

1. Topband: preamps homemade ... (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Thu May 1 07:28:44 2003; 50dB is a heap of TOI, so the amplifier must have some very beefy components. I haven't found an amp with an TOI of 50dB yet, except some post-mixer amps I built with VHF power FET transistors or hi; /archives//html/Topband/2003-05/msg00004.html (7,823 bytes)
2. Topband: preamps homemade ... (score: 1): Author: k9ay at k9ay.com (K9AY); Date: Thu May 1 16:47:59 2003; -- Brad meant 50 dB for BCB filter rejection, not TOI. The highpass filter in the PRE-1 and PRE-2 has typically 20 dB rejection at 1600 kHz, a 35+ dB notch at 1450 kHz, and 48+ dB rejection at frequ; /archives//html/Topband/2003-05/msg00008.html (7,888 bytes)
3. Topband: preamps homemade ... (score: 1): Author: richard at karlquist.com (Richard Karlquist); Date: Thu May 1 16:48:01 2003; The Anzac AM(C)-132 and AM(C)-134 amplifiers have 3OI of +49 dBm with a power dissipation of 2.6W. Rick N6RK; /archives//html/Topband/2003-05/msg00011.html (7,389 bytes)
4. Topband: preamps homemade ... (score: 1): Author: k9ay at k9ay.com (K9AY); Date: Fri May 2 06:45:59 2003; With a dissipation of just 2.6W, I suspect that these units either (a) have feed-forward or other linearization schemes, or (b) are spec'd for Output Intercept Point (OIP3), which must be reduced by; /archives//html/Topband/2003-05/msg00014.html (7,578 bytes)
5. Topband: preamps homemade ... (score: 1): Author: richard at karlquist.com (Richard Karlquist); Date: Sun May 4 19:59:47 2003; Right on both counts. The Anzac catalog specifically states that 30I is referred to the output. That makes sense in light of the fact that the 3OI's of the two amplifiers I mentioned are about the s; /archives//html/Topband/2003-05/msg00025.html (7,854 bytes)
6. Topband: preamps homemade ... (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Mon May 5 05:48:57 2003; It makes no difference if we use output or input TOI. We just need to use a common standard in comparisons. No matter how we do it, we need to know TOI, noise figure, and gain if we are going to make; /archives//html/Topband/2003-05/msg00027.html (6,958 bytes)
7. Topband: preamps homemade ... (score: 1): Author: revans at sarnoff.com (ROBERT EVANS); Date: Wed Apr 30 14:58:30 2003; I and WW2Y built a couple pre-amps for topband a couple of years ago. He and K2WI used them with considerable success in topband contesting, ( not due to the pre-amp ) but at least the pre-amp didn't; /archives//html/Topband/2003-04/msg00068.html (8,910 bytes)
8. Topband: preamps homemade ... (score: 1): Author: brehm at ptitest.com (Brad Rehm); Date: Wed Apr 30 17:05:07 2003; "One of the complaints that we were aware of was that some commercial pre-amps suffered from being driven into distortion from broadcast and other sources nearby in frequency." BCNU DE N2LO I'm surpr; /archives//html/Topband/2003-04/msg00074.html (7,847 bytes)

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