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Total 599 documents matching your query.

101. [RFI] Cable TV (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Fri, 22 Jan 1999 09:02:22 -0500
73 Ted Wilhelm K9HUH Hi, Ted, Thanks for the update. TCI is actually one the good guys, overall. See http://www.arrl.org/tis/info/rfiteljx.html for info about another cable TV RFI problem related to
/archives//html/RFI/1999-01/msg00010.html (9,189 bytes)

102. [RFI] Cable RFI (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Fri, 22 Jan 1999 09:09:02 -0500
all. TCI was One point I forgot to mention in my last post. I have a number of contacts in the cable industry management and in their leadership on the Society of Cable Telecasting engineers. These
/archives//html/RFI/1999-01/msg00011.html (8,516 bytes)

103. [RFI] Spurious signal levels (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Wed, 20 May 1998 16:58:00 -0400
Hi, Ian, They are found in the Code of Federal Regulations, Title 46, Part 97, Section 307 (97.307) of the FCC regs, but they are a bit cryptic. Let me translate into plain English (or at least the A
/archives//html/RFI/1998-05/msg00024.html (16,836 bytes)

104. [RFI] Touch lamps going crazy (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Tue, 7 Apr 1998 10:25:00 -0400
QST articles on touch lamps: qst1985.txt:Rfi And Touch Controlled Lamps ... May P45 qst1986.txt:More On Rfi To Touch Controlled Lamps ... Jan P49 qst1987.txt:Touch Lamp Transceiver ... Feb P43 qst198
/archives//html/RFI/1998-04/msg00012.html (10,824 bytes)

105. [RFI] Touch lamps going crazy (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Tue, 7 Apr 1998 11:07:00 -0400
Now that I have another minute in my rather busy schedule, I will add a bit of information. Touch lamps use a free-running oscillator usually running at 50-200 kHz or so, a touch plate, and a simple
/archives//html/RFI/1998-04/msg00013.html (13,634 bytes)

106. [RFI] NEED TVI HELP (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Mon, 2 Mar 1998 11:38:00 -0500
neighbor that the problem could be The ARRL pamphlet and FCC Inteference Handbook are two different things. The first is a 3-fold pamphet, designed to discuss intererence in non-technical terms for
/archives//html/RFI/1998-03/msg00005.html (8,880 bytes)

107. [RFI] FW: RFI (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Tue, 3 Mar 1998 19:13:00 -0500
Hello, folks, I wanted to share with with the RFI reflector, both as a heads up and to find out if anyone else has heard of manufacurers responding this way. I just wish that consumer equipment was m
/archives//html/RFI/1998-03/msg00015.html (11,613 bytes)

108. [RFI] Re: Mail failure (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Tue, 24 Mar 1998 13:25:00 -0500
a Actually, they are moderately effective at lower HF, *IF* you use enough of them. A good rule of thumb is that you need to use the same number of them as would be used to make a bead balun. That t
/archives//html/RFI/1998-03/msg00038.html (7,609 bytes)

109. [RFI] RFI Hints (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Thu, 26 Mar 1998 12:04:00 -0500
To: <rfi@contesting.com> but This often works, but the ferrite material was designed for 15 kHz; its characteristics at RF are unknown. The only risk to this is that it may not work, and you may be
/archives//html/RFI/1998-03/msg00041.html (9,422 bytes)

110. [RFI] TVI Help (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Mon, 2 Feb 1998 11:05:00 -0500
ARRL publishes an RFI pamplet, written specifically to help explain interference to your neighbors. To get a couple of copies, send an SASE to the ARRL Technical Department Secretary, 225 Main St, N
/archives//html/RFI/1998-02/msg00004.html (7,397 bytes)

111. [RFI] Telephone RFI problem (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Wed, 11 Feb 1998 12:09:00 -0500
To: <rfi@contesting.com> Sounds like something has changed. Did he buy a new phone, answering machine, modem? Etc. In most cases, filters will do it. These are widely sold and advertised. Radio Shac
/archives//html/RFI/1998-02/msg00017.html (10,438 bytes)

112. [RFI] Telephone RFI problem (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Thu, 12 Feb 1998 09:42:00 -0500
To: <rfi@contesting.com> I have been in close contact with RS's telephone buyer over the years. In order for them to accept a telephone as part of their line, it must pass their vendor-qualification
/archives//html/RFI/1998-02/msg00021.html (11,123 bytes)

113. [RFI] Re: rfi-digest V1 #26 (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Thu, 12 Feb 1998 10:53:00 -0500
The bill is quite specific. It will permit local authorities enforce FCC law related ONLY to: Use of high power by "CB" operators Outband operation using CB-type equipment It does not directly addre
/archives//html/RFI/1998-02/msg00023.html (7,567 bytes)

114. [RFI] Low pass filters (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Mon, 19 Jan 1998 10:48:00 -0500
Almost any low-pass filter will offer at least 30-60 dB of stop-band attenuation. In most cases, IF the intereference is caused by transmitter unwanted emissions, this will be quite enough to make th
/archives//html/RFI/1998-01/msg00026.html (11,364 bytes)

115. [RFI] Low pass filters (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Tue, 20 Jan 1998 10:52:00 -0500
Thanks for the additional information, Ian. My principle reason for suggesting a bandpass filter for VHF is that most of the commercial VHF transmit filters available in the US are of the bandpass ty
/archives//html/RFI/1998-01/msg00029.html (11,754 bytes)

116. [RFI] Low pass filters (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Wed, 21 Jan 1998 10:26:00 -0500
Actually, the "braid-breaker" technique is not really a high-pass filter. It is designed to attenuate the common-mode signal that is inevitably picked up on any conductors near a source of radiated
/archives//html/RFI/1998-01/msg00032.html (10,753 bytes)

117. [RFI] fuel pump noise in a 1994 FORD (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Thu, 22 Jan 1998 07:03:00 -0500
Fuel-pump noise is a known Ford problem. Ford disucsses this in a Technical Service Bulletin, TSB-93-15-6. They offer a fuel-pump filter that installs in the tank, right next to the in-tank fuel pump
/archives//html/RFI/1998-01/msg00037.html (10,004 bytes)

118. [RFI] CATV Problems (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Thu, 22 Jan 1998 08:43:00 -0500
Hello, Jim, I just touched on this in a recent post to this reflector, so I will summarize with the Readers Digest version. ARRL has an info package on Cable TV. It is a reprint of a 3-part article I
/archives//html/RFI/1998-01/msg00039.html (11,412 bytes)

119. [RFI] CATV Problems (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Thu, 22 Jan 1998 14:47:00 -0500
Hi, Mitchell, No, the CATVI package is, unfortunately, not the same. The concepts are the same as some of those files, but this one is not an ARRL pub, even though I wrote it. The CATV package is des
/archives//html/RFI/1998-01/msg00043.html (16,450 bytes)

120. [RFI] computer keyboard (score: 1)
Author: Hare, Ed, W1RFI" <ehare@arrl.org (Hare, Ed, W1RFI)
Date: Wed, 28 Jan 1998 19:31:00 -0500
Unfortunately, I can't tell you which keyboards are okay; hams don't call ARRL HQ and tell us that they are NOT intefering with their computers. :-) At W1AW, they currently have Gateway 2000 compute
/archives//html/RFI/1998-01/msg00050.html (9,226 bytes)


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