Amateur Radio News
Articles 71 - 80 of most recent articles
CW Keyers
Technical Reference/HomebrewMorse keyers based on Norcal keyer chip and SKC kit from Hendricks QRP kits
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
Technical Reference/HomebrewMorse keyers based on Norcal keyer chip and SKC kit from Hendricks QRP kits
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
Filters and Ferrites in EMC
Technical Reference/Radio Frequency InterferenceThis article is about the characteristics and use of various filters and ferrites for solving amateur radio electromagnetic compatibility problems involving breakthrough of amateur signals into domestic equipment such as television sets, video recorders stereo sytems etc.
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
Technical Reference/Radio Frequency InterferenceThis article is about the characteristics and use of various filters and ferrites for solving amateur radio electromagnetic compatibility problems involving breakthrough of amateur signals into domestic equipment such as television sets, video recorders stereo sytems etc.
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
Low cost 1:1 balun
Antennas/BalunsA balun don't depend on use of ferrite beads, but use steel wool to attenuate any RF on the outer braid
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
Antennas/BalunsA balun don't depend on use of ferrite beads, but use steel wool to attenuate any RF on the outer braid
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
50 Mhz solid state 600W amplifier
Technical Reference/Amplifiers/VHF AmplifiersG3WZT John Matthews project of a 600 Watt solid state linear amplifier for the 6 meters band
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
Technical Reference/Amplifiers/VHF AmplifiersG3WZT John Matthews project of a 600 Watt solid state linear amplifier for the 6 meters band
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
PSK31 Interface
Technical Reference/Sound Card Radio InterfacingFairly simple way to interface a computer soundcard to an HF rig to operate PSK31. This interface also works for SSTV & RTTY, and has been tested with a Kenwood TS-140.
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
Technical Reference/Sound Card Radio InterfacingFairly simple way to interface a computer soundcard to an HF rig to operate PSK31. This interface also works for SSTV & RTTY, and has been tested with a Kenwood TS-140.
The DXZone – Jul 16, 2008 06:56 AM [GMT] ¦ comment?
ARRL, FCC, Meet in Washington to Discuss BPL Remand
On July 9, ARRL officials -- President Joel Harrison, W5ZN; Chief Executive Officer David Sumner, K1ZZ, and General Counsel Chris Imlay, W3KD -- met with members of the FCC's Office of Engineering and Technology to discuss the recent US Court of Appeals decision regarding broadband over power lines (BPL). In that case, the Court agreed with the ARRL on two major points and remanded the rules to the Commission. According to Imlay, the meeting was convened to discuss "a possible regulatory approach" to BPL with the FCC. Suggestions put forth by ARRL "would address the needs and concerns of Amateur Radio operators in avoiding harmful interference from [BPL systems] while imposing the minimum necessary regulatory obligations on BPL deployments." The ARRL understands, Imlay said, that "there are at this point rules that could be adopted which would, at once, (1) protect Amateur Radio communications from predictable harmful interference from BPL; and (2) permit broadband over power line systems to operate in the 3 to 80 MHz range without significant constraint and without substantial redesign or retroactive build outs."
ARRL – Jul 15, 2008 7:08 PM [GMT] ¦ comment?
On July 9, ARRL officials -- President Joel Harrison, W5ZN; Chief Executive Officer David Sumner, K1ZZ, and General Counsel Chris Imlay, W3KD -- met with members of the FCC's Office of Engineering and Technology to discuss the recent US Court of Appeals decision regarding broadband over power lines (BPL). In that case, the Court agreed with the ARRL on two major points and remanded the rules to the Commission. According to Imlay, the meeting was convened to discuss "a possible regulatory approach" to BPL with the FCC. Suggestions put forth by ARRL "would address the needs and concerns of Amateur Radio operators in avoiding harmful interference from [BPL systems] while imposing the minimum necessary regulatory obligations on BPL deployments." The ARRL understands, Imlay said, that "there are at this point rules that could be adopted which would, at once, (1) protect Amateur Radio communications from predictable harmful interference from BPL; and (2) permit broadband over power line systems to operate in the 3 to 80 MHz range without significant constraint and without substantial redesign or retroactive build outs."
ARRL – Jul 15, 2008 7:08 PM [GMT] ¦ comment?
Capitalizing on your Capital Project
A big key unlocks interest in ham radio.
ARRL – Jul 15, 2008 4:42 PM [GMT] ¦ comment?
A big key unlocks interest in ham radio.
ARRL – Jul 15, 2008 4:42 PM [GMT] ¦ comment?
KJ7UN Spot Cluster
DX Resources/ClustersKJ7UN DX Spot Cluster - Ham Radio DX Spots from Montana, Wyoming, Utah and Idaho
The DXZone – Jul 15, 2008 07:57 AM [GMT] ¦ comment?
DX Resources/ClustersKJ7UN DX Spot Cluster - Ham Radio DX Spots from Montana, Wyoming, Utah and Idaho
The DXZone – Jul 15, 2008 07:57 AM [GMT] ¦ comment?
WA Radio Scanner Users' Group
Radio Scanning/Regional/AustraliaWest Australian Radio Scanner User's Group
The DXZone – Jul 15, 2008 07:57 AM [GMT] ¦ comment?
Radio Scanning/Regional/AustraliaWest Australian Radio Scanner User's Group
The DXZone – Jul 15, 2008 07:57 AM [GMT] ¦ comment?
Accurate Inductance Calculator
Technical Reference/ComponentsThis page allows you to calculate in the most accurate way high-Q inductor coils.
The DXZone – Jul 15, 2008 07:57 AM [GMT] ¦ comment?
Technical Reference/ComponentsThis page allows you to calculate in the most accurate way high-Q inductor coils.
The DXZone – Jul 15, 2008 07:57 AM [GMT] ¦ comment?
