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61. [Amps] RF ground (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Tue, 16 Apr 2002 22:10:12 -0400; If you got an 18 kA lightning strike the voltage on the ground at your tuner would rise to around 18 kV due to the impedance of the 5 foot ground lead. That is assuming you had a perfect ground at th; /archives//html/Amps/2002-04/msg00395.html (7,484 bytes)
62. [Amps] Lightning (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Wed, 17 Apr 2002 11:48:26 -0400; Colin, You are making it way too complicated. The best deterrent to lightning is to hang a rabbits foot on your tower. Actually several rabbits feet does a much better job. After all have you ever he; /archives//html/Amps/2002-04/msg00400.html (8,205 bytes)
63. [Amps] RF ground (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Wed, 17 Apr 2002 12:39:49 -0400; You may or may not be all right. Being that lightning is a constant current source it is going to develop it's strike current no matter how high it has to raise the voltage to get to the strike curre; /archives//html/Amps/2002-04/msg00403.html (8,853 bytes)
64. [Amps] Warm Coax question (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Sat, 20 Apr 2002 14:14:34 -0400; Hi Doc, First be sure the antenna is tuned for the ham band. Most commercial antennas will not cover the 2 meter ham band. The antennas are broadly advertised sometimes to "cover 144 to 174 mhz". But; /archives//html/Amps/2002-04/msg00500.html (8,998 bytes)
65. [Amps] Warm Coax question (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Mon, 22 Apr 2002 20:34:36 -0400; Telawave makes some inline couplers that are not too expensive. Much cheaper than from bird. They are 2 direction. You can get them with a meter or supply your own meter. 73 Gary k4FMX; /archives//html/Amps/2002-04/msg00524.html (8,611 bytes)
66. [Amps] LA-1000 (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Mon, 29 Apr 2002 20:50:08 -0400; I have an Amp supply LA-1000 amplifier. Can anyone tell me what the values of R7, R8, R9 and R10 in the metering circuit are ? I have a schematic for the LA-1000A, don't know if there is a difference; /archives//html/Amps/2002-04/msg00591.html (6,486 bytes)
67. [Amps] Glitch resistors (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Wed, 06 Mar 2002 15:10:57 -0500; Isn't the idea of a glitch resistor to act as a fuse ? Don't you want it to open on a glitch? 73 Gary K4FMX; /archives//html/Amps/2002-03/msg00116.html (9,514 bytes)
68. [Amps] Glitch resistors (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Wed, 06 Mar 2002 21:57:42 -0500; Ok that makes sense. Thanks Gary K4FMX; /archives//html/Amps/2002-03/msg00123.html (10,421 bytes)
69. [Amps] Source for 220V cords (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Thu, 07 Mar 2002 17:09:49 -0500; A window air conditioner cord is what you want. They have a molded plug on them, although they are not usually all that long. Can be found in Home Depot, Lows or probably most larger hardware stores.; /archives//html/Amps/2002-03/msg00141.html (12,064 bytes)
70. [Amps] Source for 220V cords (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Thu, 07 Mar 2002 22:21:02 -0500; I am not sure about the SB220 but the SB200 does not require a neutral connection on 220 volts. The fan is the only 120 volt item in the amp. It gets connected from one hot side to the center connect; /archives//html/Amps/2002-03/msg00151.html (9,661 bytes)
71. [Amps] al-1200 question (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Fri, 08 Mar 2002 11:13:28 -0500; Actually added antenna gain will help on receive too. As a matter of fact it will probably help more than on the transmit side. Added antenna gain narrows the beam width and reduces qrm and other noi; /archives//html/Amps/2002-03/msg00164.html (9,345 bytes)
72. [Amps] Source for 220V cords (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Fri, 08 Mar 2002 11:18:37 -0500; The ground and neutral wires are connected together in the breaker box. But you don't always know about how things are between the outlet and the breaker box. The whole idea of course is for the grou; /archives//html/Amps/2002-03/msg00165.html (10,873 bytes)
73. [Amps] Source for 220V cords (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Fri, 08 Mar 2002 11:22:46 -0500; Yes Bill, a simple rule is "ground should never carry any current". One note about ground fault breakers, if you are gong to install them on a 220 volt line they need to be double pole type just like; /archives//html/Amps/2002-03/msg00167.html (12,593 bytes)
74. [Amps] Source for 220V cords (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Fri, 08 Mar 2002 13:20:22 -0500; This is wrong. The neutral and ground are NEVER tied together except at the MAIN breaker panel. This is even true when in some installations the main house breaker is outside and the distribution pan; /archives//html/Amps/2002-03/msg00181.html (12,918 bytes)
75. [Amps] Antenna vs. amp (was: al-1200 question) (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Sun, 10 Mar 2002 12:12:25 -0500; The only thing to remember is that you can not have gain in an antenna unless you have directivity. Gain in a particular direction comes from reducing it in other directions. 73 Gary K4FMX; /archives//html/Amps/2002-03/msg00214.html (11,147 bytes)
76. [Amps] Antenna vs. amp (was: al-1200 question) (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Sun, 10 Mar 2002 21:53:53 -0500; Good points Tom. I was thinking more of the difference between 2 antennas of similar efficiencies. Dipole verses a multi element beam for instance. 73 Gary K4FMX; /archives//html/Amps/2002-03/msg00222.html (9,041 bytes)
77. [Amps] Antenna vs. amp (was: al-1200 question) (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Wed, 13 Mar 2002 10:27:58 -0500; To: <amps@contesting.com> Steve, If both antennas have the same gain they will have the same directional properties. One could have a sharper vertical pattern and the other a sharper horizontal patte; /archives//html/Amps/2002-03/msg00277.html (10,649 bytes)
78. [Amps] Antenna vs. amp (was: al-1200 question) (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Thu, 14 Mar 2002 10:19:54 -0500; I guess I should have qualified that a little better. I did say that one may have a sharper vertical pattern and the other a sharper horizontal pattern. What I meant by that over simplification was t; /archives//html/Amps/2002-03/msg00305.html (9,690 bytes)
79. [Amps] Antenna vs. amp (was: al-1200 question) (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Thu, 14 Mar 2002 12:05:39 -0500; My point exactly. In this antenna the radiation is suppressed in the vertical plane to be put into the horizontal. This antenna is very directional in the vertical plane though it is omni in the hori; /archives//html/Amps/2002-03/msg00317.html (12,951 bytes)
80. [Amps] Henry 2k p.s. questions (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Mon, 18 Mar 2002 11:11:27 -0500; A small power supply capable of 15 to 20 volts should work to check the diodes. Put a resistor in series with the diodes and power supply. A 1k resistor should work fine. Then measure the voltage acr; /archives//html/Amps/2002-03/msg00399.html (9,009 bytes)

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