Search String: Display: Description: Sort:

Results:

References: [ +from:ken.d.brown@hawaiiantel.net: 666 ]

Total 666 documents matching your query.

21. [TenTec] Antenna names (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sun, 14 Sep 2014 09:41:05 -1000
The Zepp was a one sided antenna, with a quarter wavelength openwire feedline to a halfwave wire. .... Hams are funny about naming antennas. For example, a Zepp antenna may have been clearly defined
/archives//html/TenTec/2014-09/msg00179.html (10,525 bytes)

22. Re: [TenTec] Zepp (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Mon, 15 Sep 2014 18:43:31 -1000
Any center fed straight wire is a dipole, regardless of how it's length compares the the wavelength you are using it on. If I build a dipole to be a half wavelength on 7 MHz, and then use it on 10.1
/archives//html/TenTec/2014-09/msg00216.html (8,310 bytes)

23. Re: [TenTec] Zepp (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Tue, 16 Sep 2014 18:03:06 -1000
By that definition, since they used the word "approximating" the length could vary over a very wide range, and still fit the definition. When you make a dipole very short the radiation pattern does n
/archives//html/TenTec/2014-09/msg00228.html (10,602 bytes)

24. Re: [TenTec] Zepp (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Wed, 17 Sep 2014 19:49:48 -1000
Touche'! Agreed! It also discredits the notion that: "Any center fed straight wire is a dipole, regardless of how it's length compares the the wavelength you are using it on." Steve G3TXQ That pretty
/archives//html/TenTec/2014-09/msg00237.html (8,560 bytes)

25. Re: [TenTec] Oooo-PS (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sat, 20 Sep 2014 15:40:09 -1000
I have had excellent results from USPS Priority Mail. Me too, and in almost every instance they are cheaper. Can't figure out why people use the other "services." Isn't UPS partially responsible for
/archives//html/TenTec/2014-09/msg00298.html (8,598 bytes)

26. [TenTec] Shipping methods (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sun, 21 Sep 2014 08:30:58 -1000
USPS works best for me for a couple of reasons, which undoubtedly do not apply to everyone. By using USPS I can have a package delivered to my P.O. Box. There is is stored securely indoors until I go
/archives//html/TenTec/2014-09/msg00314.html (11,286 bytes)

27. Re: [TenTec] 961 PS REPAIR / REPLACEMENT---WTB 961PS (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sun, 21 Sep 2014 08:44:23 -1000
Diodes don't usually fail without a reason. The reason is often a failure of some other part. Yes it would definitely be wise to check around. When my 961 bridge rectifier failed I replaced it with a
/archives//html/TenTec/2014-09/msg00316.html (8,479 bytes)

28. Re: [TenTec] Shipping methods (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sun, 21 Sep 2014 08:48:06 -1000
All of the package shipping companies should be thought of as G force survivability testing companies, that just happen to deliver to a different location than where the package was dropped off.
/archives//html/TenTec/2014-09/msg00319.html (9,375 bytes)

29. Re: [TenTec] Argo V and digital modes (score: 1)
Author: ken.d.brown@hawaiiantel.net
Date: Mon, 22 Sep 2014 13:42:16 -1000
If you use what I call "real FSK" there is only one tone being sent at any one time. There is no carrier that needs to be suppressed as in AFSK to a rig in SSB mode. There is only one tone so there c
/archives//html/TenTec/2014-09/msg00338.html (9,441 bytes)

30. Re: [TenTec] Argo V and digital modes (score: 1)
Author: ken.d.brown@hawaiiantel.net
Date: Mon, 22 Sep 2014 17:33:50 -1000
A simple sine wave is called a tone, even when it is a radio frequency sine wave. So CW and FSK both send a single RF tone. With FSK the tone frequency changes, but at any given time it is just one t
/archives//html/TenTec/2014-09/msg00345.html (11,682 bytes)

31. Re: [TenTec] Argo V and digital modes (score: 1)
Author: ken.d.brown@hawaiiantel.net
Date: Mon, 22 Sep 2014 17:38:18 -1000
You're right about the transients and the sidebands they create. Keyed CW creates sidebands too. I don't think those sideband components could be accurately called intermodulation products though.
/archives//html/TenTec/2014-09/msg00346.html (10,182 bytes)

32. Re: [TenTec] Argo V and digital modes (score: 1)
Author: ken.d.brown@hawaiiantel.net
Date: Tue, 23 Sep 2014 08:48:57 -1000
There could only be intermodulation distortion caused by the combination of those spectral components (the mark tone, the space tone and the sidebands) if they were being generated simultaneously. I'
/archives//html/TenTec/2014-09/msg00353.html (12,263 bytes)

33. Re: [TenTec] din connector, etc. (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Wed, 24 Sep 2014 19:04:53 -1000
"The dit starts 17mS later and completes 17mS later. The first dit is sent in its full length and the op on the other end never even hears the difference." That is good to hear. Ten-Tec seems to be t
/archives//html/TenTec/2014-09/msg00409.html (10,501 bytes)

34. [TenTec] Keying delays/timing (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Thu, 25 Sep 2014 18:52:15 -1000
So why then do the manufacturers design the T/R switching with this delay? Is it to avoid hot switching in the amplifier should one be used. Not really. This delay is necessary to permit settling of
/archives//html/TenTec/2014-09/msg00423.html (11,945 bytes)

35. Re: [TenTec] Omni VI Freq calibration (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sat, 30 Aug 2014 10:26:09 -1000
The OCXO is the reference for all bands. As to individual bands, there's a crystal {10 of them total} being one for each band. The crystal oscillator is supposed to be locked to the precision referen
/archives//html/TenTec/2014-08/msg00370.html (10,005 bytes)

36. Re: [TenTec] Tentec Jupiter and Heil Mics (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sun, 31 Aug 2014 09:05:39 -1000
I would comment that the mike requirements for the Jupiter is 5 mV or -67dB. dB relative to what? Decibels are a ratio. Without stating a reference level decibels are meaningless as a level measureme
/archives//html/TenTec/2014-08/msg00386.html (8,279 bytes)

37. Re: [TenTec] Tentec Jupiter and Heil Mics (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sun, 31 Aug 2014 13:18:19 -1000
While 5 mV is a voltage that can be measured and confirmed, it is not the whole story because it does not include the impedance. In this case it can be assumed to be whatever impedance it is that the
/archives//html/TenTec/2014-08/msg00388.html (10,441 bytes)

38. Re: [TenTec] On Noisy Transmitters (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sun, 06 Jul 2014 08:50:28 -1000
rare for it to have broadband noise because it has no synthesizer. Actually it can't have any, but maybe there is a way that I am >unaware of, so I'll just call it rare. I'd find it interesting to k
/archives//html/TenTec/2014-07/msg00147.html (11,294 bytes)

39. Re: [TenTec] On Noisy Transmitters (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Sun, 06 Jul 2014 21:23:56 -1000
Thanks Rick, I understand what phase noise is. I work on phase locked loops and look at the signals they produce with spectrum analyzers almost daily. And I understand why transmitters that do not us
/archives//html/TenTec/2014-07/msg00183.html (10,970 bytes)

40. Re: [TenTec] Scout has vy low Pwr out on some bands (score: 1)
Author: Ken Brown <ken.d.brown@hawaiiantel.net>
Date: Tue, 15 Jul 2014 21:47:16 -1000
Schwarz in the 70s, repairing Tektronix oscilloscopes. This brings back memories, as I used to repair and calibrate Tektronix oscilloscopes in the '70s too. Our procedure was to rinse them (the whol
/archives//html/TenTec/2014-07/msg00505.html (11,819 bytes)

Current List: 21 - 40
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]
This search system is powered by Namazu