- 21. Re: [TenTec] cw settings (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sat, 19 Nov 2005 14:46:45 -0800
- In order to measure the bandwidth occupied by a pulsed signal using a spectrum analyzer we have to integrate over a lot of spectrum analyzer LO sweeps. We could just send a string of dits and let it
- /archives//html/TenTec/2005-11/msg00348.html (11,242 bytes)
- 22. Re: [TenTec] amps (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sat, 6 Aug 2005 12:58:57 -0700
- If you don't want to solder anything, here is an alternative to the Harbach kit: http://www.ameritron.com/products.php?prodid=ARB-704 Mike, W4EF........................... Does anyone have any info o
- /archives//html/TenTec/2005-08/msg00123.html (8,113 bytes)
- 23. [TenTec] Minimum Supply Voltage for Omni 6+ (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sat, 6 Aug 2005 15:56:46 -0700
- I just received an Omni 6+ that I bought on Ebay. It appears to be working nominally, but the microprocessor flakes out if I drop the input voltage below +13 VDC (measured at the power input connecto
- /archives//html/TenTec/2005-08/msg00130.html (7,708 bytes)
- 24. [TenTec] Centurion Plate Current Meter (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Thu, 11 Aug 2005 07:16:51 -0700
- I am checking out a Ten-Tec Centurion 422 (2 x 3-500z) amplifier for a friend. This morning I fired it up on 20 meters (into a dummy load) for this first time. Everything looked good (output power, t
- /archives//html/TenTec/2005-08/msg00216.html (8,151 bytes)
- 25. [TenTec] Omni VI+ Keying (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Fri, 12 Aug 2005 19:52:17 -0700
- I just did an interesting experiment comparing my Paragon 585 (aka "Paragon 1") to an Omni 6+ that I just picked up on Ebay. When I connect my Inrad Key Pulser ( http://www.qth.com/inrad/) to the Par
- /archives//html/TenTec/2005-08/msg00243.html (8,994 bytes)
- 26. Re: [TenTec] Omni VI+ Keying (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Fri, 12 Aug 2005 23:54:47 -0700
- I don't have experience with a 'pulser' as I've always found it much easier to tune by holding the key down or using the TUNE button. The TUNE button is easier on the operator, but can be harder on t
- /archives//html/TenTec/2005-08/msg00246.html (12,722 bytes)
- 27. Re: [TenTec] Omni VI+ Keying (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sat, 13 Aug 2005 06:06:33 -0700
- No, Bob, I hooked the Key Pulser to the "KEY" input of the Omni 6+ not the keyer paddle input. Otherwise I would still be getting a string of CW characters when I set the pulser to 100% instead of a
- /archives//html/TenTec/2005-08/msg00248.html (11,732 bytes)
- 28. Re: [TenTec] Omni VI+ Keying (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sat, 13 Aug 2005 19:29:28 -0700
- Interestingly enough, Ken, I just tried using the Omni 6+ with its internal key. With the keyer adjusted for about 30 WPM, a string of dits gives what appears to be an ~33% duty cycle, but I would ha
- /archives//html/TenTec/2005-08/msg00274.html (11,192 bytes)
- 29. Re: [TenTec] Omni VI+ Keying (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sun, 14 Aug 2005 20:28:13 -0700
- Hi Michael, I don't know what version firmware is in my Omni VI version 3 radio. Maybe it has the "microchirp". No one has complained about it to me. I'll try listening to it with another receiver t
- /archives//html/TenTec/2005-08/msg00295.html (12,196 bytes)
- 30. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Fri, 29 Jul 2005 07:34:26 -0700
- 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/msg01234.html (11,595 bytes)
- 31. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Fri, 29 Jul 2005 23:07:44 -0700
- Hi Mike-- As I said, I was over my head. Please help me understand something you said in your last paragraph, to wit: "If you drop the input signal tones levels by 10dB, the 3rd order products will
- /archives//html/TenTec/2005-07/msg01247.html (16,371 bytes)
- 32. Re: [TenTec] Astron RS-35M and Omni VI (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sat, 30 Jul 2005 10:50:20 -0700
- I have seen some linear regulators that specify a small minimum load for stable operation. Usually these are low drop-out types, however. I have an RS-35 here, but I have never noticed any problems l
- /archives//html/TenTec/2005-07/msg01255.html (8,964 bytes)
- 33. Re: [TenTec] Filters, amps and IMD, etc (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sat, 30 Jul 2005 16:32:53 -0700
- I brought this back to the reflector so the folks here can get a better idea of what we think. Mike N4NT Well frankly, Mike, it irks me a little that you made my private email public, but fair enough
- /archives//html/TenTec/2005-07/msg01259.html (26,706 bytes)
- 34. Re: [TenTec] Wanted Heath HD-1481 Antenna Switch (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Wed, 20 Apr 2005 19:47:51 -0700
- Jim, A local club station that I operate from uses three of Ameritron's RCS-4 remote coax switches to do what you are describing. We are feeding each of them through over 1100 ft of 7/8 hardline (we
- /archives//html/TenTec/2005-04/msg00521.html (9,728 bytes)
- 35. [TenTec] Ruggedized 229 Tuner (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Mon, 14 Mar 2005 21:03:01 -0800
- Ever since I built my Ten-Tec 4229 tuner kit (and subsequently fried the balun and ceramic wafer switch), I have always wanted to build a ruggedized version of this tuner. I think the 229/4229 uses a
- /archives//html/TenTec/2005-03/msg00362.html (7,281 bytes)
- 36. Re: [TenTec] Acom/Orion (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Fri, 31 Dec 2004 18:13:39 -0800
- It might be the extra group delay from the filter, Barry. You might try substituting a long piece of coax for the Dunestar filter. A generic 5 pole high-pass with a 1.7 MHz cutoff will have about 100
- /archives//html/TenTec/2004-12/msg01354.html (9,404 bytes)
- 37. Re: [TenTec] Hi power Ten Tec ant tuner swr drift? (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sun, 14 Nov 2004 09:45:01 -0800
- Are you using the ferrite balun? If so, check its temperature too. The stock balun in the this tuner is very unforgiving. When I built this tuner back in 1985, I smoked the balun almost immediately w
- /archives//html/TenTec/2004-11/msg00303.html (9,412 bytes)
- 38. Re: [TenTec] Hi power Ten Tec ant tuner swr drift? (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sun, 14 Nov 2004 10:42:36 -0800
- Good advice, Steve. Some form of capacitive top loading (top hat or even a single horizontal wire) will raise the feedpoint R too. Mike, W4EF.......................... percentage 4:1 anyway). get occ
- /archives//html/TenTec/2004-11/msg00307.html (11,636 bytes)
- 39. Re: [TenTec] Re: FULL QSK? What it is (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sun, 14 Nov 2004 15:31:34 -0800
- At infinite speed you can send your message in zero time, so at that point you don't really need QSK anymore :):) 73 de Mike, W4EF............................ between dits at infinite speed, and that
- /archives//html/TenTec/2004-11/msg00330.html (8,043 bytes)
- 40. Re: [TenTec] Hi power Ten Tec ant tuner swr drift? (score: 1)
- Author: "Michael Tope" <W4EF@dellroy.com>
- Date: Sun, 14 Nov 2004 19:57:06 -0800
- Doug, W9CF has an interesting java applet that calculates T-network tuner losses for an arbitary load impedance. You can adjust the component Q in the program setup and then examine what effect that
- /archives//html/TenTec/2004-11/msg00342.html (13,204 bytes)
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