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281. [TenTec] Fwd: Topband: More About Clix (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue, 29 Jan 2002 20:41:58 -0600; A good audio spectrum analyzer, such as one using a computer sound card with rapid updates and fine resolution in a falling water display should show it readily. Or alternatively, an audio oscillator; /archives//html/TenTec/2002-01/msg00562.html (8,848 bytes)
282. [TenTec] Values of filter capacitors? (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sun, 02 Dec 2001 14:24:48 -0600; In the ladder filter that Tentec uses, the crystal frequencies determine the center frequency, while the capacitors determine the bandwidth. The larger the capacitors, the smaller the bandwidth. Ther; /archives//html/TenTec/2001-12/msg00008.html (6,805 bytes)
283. [TenTec] Pegasus / Omni V and RigBlaster (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sun, 02 Dec 2001 14:44:11 -0600; The source and load impedances are different. Worked out with the relative high impedance of the microphone that the two radio with different load impedances worked with the same. The output impedanc; /archives//html/TenTec/2001-12/msg00009.html (7,113 bytes)
284. [TenTec] Omni V operation (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Fri, 07 Dec 2001 10:05:43 -0600; Backing off on the RF gain control IS cheating. Its taking away some of the weak signal copying, kind of setting a threshold on signal AND noise. I've been doing that on my HF radios (Collins, Tentec; /archives//html/TenTec/2001-12/msg00058.html (7,941 bytes)
285. [TenTec] Mic impedance for TT Omni-D? (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sun, 09 Dec 2001 17:20:55 -0600; High impedance can load low impedance. Just the voltage will be on the low side, requiring lots of microphone gain. Many Shure microphones are switchable dual low and high impedance. High impedance i; /archives//html/TenTec/2001-12/msg00099.html (6,835 bytes)
286. [TenTec] New TT QRP Rig (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Mon, 10 Dec 2001 15:54:08 -0600; The first kenwood solid state was the fpm2000. The later fpm 300 was hybrid. 73, Jerry, K0CQ -- Entire content copyright Dr. Gerald N. Johnson. Reproduction by permission only.; /archives//html/TenTec/2001-12/msg00109.html (8,176 bytes)
287. [TenTec] New TT QRP Rig (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue, 11 Dec 2001 09:24:34 -0600; Of course, YES it was Hallicrafters. Guess I need to heed a new sign at this computer saying, "Be sure brain is in gear before typing..." I had one of the good FPM-300. There were many that had bad c; /archives//html/TenTec/2001-12/msg00117.html (8,863 bytes)
288. [TenTec] Carrier Supression in the Omni V (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Thu, 13 Dec 2001 22:37:15 -0600; There might need to be some capacitive balance besides the resistive balance. Might be that the carrier isn't as far down the side of the filter on one sideband as the other and there's some leakage; /archives//html/TenTec/2001-12/msg00126.html (7,184 bytes)
289. [TenTec] What is "blow by"? (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Fri, 14 Dec 2001 01:15:30 -0600; Blow by sounds like what a receiver with a very broad filter, except filter blow by is weaker than what it would have been in the very wide receiver. Can be both high beat frequency and the other sid; /archives//html/TenTec/2001-12/msg00132.html (6,840 bytes)
290. [TenTec] Corsair II digital readout (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Thu, 08 Nov 2001 16:06:10 -0600; Check the 5 volt power to the digital readout microprocessor and replace any electrolytic bypass capacitors in the module. Try the keyer, its in the same computer chip. Tighten the board mounting scr; /archives//html/TenTec/2001-11/msg00071.html (7,288 bytes)
291. [TenTec] Corsair II digital readout (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sun, 11 Nov 2001 09:46:37 -0600; Solder joints and crystal are suitable suspects after power supply and aluminum electrolytics (that by now are essentially open). I don't know what the Corsair I used for that chip, the chip in the C; /archives//html/TenTec/2001-11/msg00105.html (7,750 bytes)
292. [TenTec] 30M "freebanders"?, scratchy Argosy audio filter switch (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sun, 11 Nov 2001 19:37:36 -0600; Deoxit by Cramolin for the switches. I thought I noticed some voice on 30m a week or two ago. 73, Jerry, K0CQ -- Entire content copyright Dr. Gerald N. Johnson. Reproduction by permission only.; /archives//html/TenTec/2001-11/msg00110.html (7,447 bytes)
293. [TenTec] Omni-D signal warbling? (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Mon, 19 Nov 2001 13:44:02 -0600; Yup, end play in the PTO shaft leads to backlash and warble. There might be a need to check the thread in the pistol. It may be worn but there's supposed to be a spring to take care of wear for a lon; /archives//html/TenTec/2001-11/msg00172.html (6,935 bytes)
294. [TenTec] Re: OMNI-6 volume control (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Wed, 21 Nov 2001 19:21:55 -0600; You can make a linear pot very nearly logarithmic by loading it with a resistor. Connect a resistor with value between 1/2 and 1 times the resistance of the pot from common to wiper. The lower value; /archives//html/TenTec/2001-11/msg00192.html (7,303 bytes)
295. [TenTec] Re: QSK Problems (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Wed, 28 Nov 2001 00:31:39 -0600; Not likely that the NE-2 will do much protection. It will probably explode at less than 100 ma. current while the PA tube flash over is likely to be a few amps. A LARGE 50 volt zener diode may be mor; /archives//html/TenTec/2001-11/msg00282.html (7,179 bytes)
296. [TenTec] Paragon II Monitoring note (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Wed, 28 Nov 2001 11:53:16 -0600; I clean up the sidetone on my Corsair II (when it bothers me) with an external DSP filter. The raspy sidetone is a Tentec characteristic, comes from using a relaxation oscillator that starts and stop; /archives//html/TenTec/2001-11/msg00291.html (7,605 bytes)
297. [TenTec] 4-pin inline male mic jack (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Thu, 29 Nov 2001 12:37:06 -0600; Hosfelt 800-524-6464 Cat no 4ILC, $3.50 73, Jerry, K0CQ -- Entire content copyright Dr. Gerald N. Johnson. Reproduction by permission only.; /archives//html/TenTec/2001-11/msg00302.html (8,228 bytes)
298. [TenTec] Jupiter Current Draw / Digital Modes (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Mon, 08 Oct 2001 13:05:48 -0500; Voice NEVER draws as much average current as a continuous tone. Its the NATURE of SSB. ALl there is from SSB is AUDIO. "Weak audio?" Compared to WHAT? There's no carrier to compare to. Its NOT AM whe; /archives//html/TenTec/2001-10/msg00057.html (7,823 bytes)
299. [TenTec] Noisy Corsair II (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Mon, 15 Oct 2001 10:19:35 -0500; On my C II, the antenna noise on all bands is far above the receiver noise threshold (and the front end noise is really low with the circuits it uses). Maybe your high noise comes from a faulty resis; /archives//html/TenTec/2001-10/msg00112.html (6,838 bytes)
300. [TenTec] Need Corsair II audio help (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sat, 15 Sep 2001 21:54:37 -0500; If the S-meter is moving, then the IF stages and detector are working. The failure has to be in the audio. Could be most any audio stage, including notch filter, peaking filter, bad switch on the spe; /archives//html/TenTec/2001-09/msg00144.html (6,921 bytes)

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