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tomnexus
  • Member for 7 years, 7 months
  • Last seen this week
  • Vancouver, BC, Canada
0 votes

For an HF antenna I am using a mesh dipole (10sq meters) with surprising good results on 7MHz how does it work?

2 votes
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Measuring effectiveness of vehicle bonding

6 votes

cut or lengthen to reduce swr on vertical wire antenna

3 votes

Is Army surplus steel wire suitable for an antenna?

2 votes
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DIY Short Vertical Wire Loaded Antenna: Using 20 Ohm Resister to Widen Q

2 votes
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Link budget validation for a UHF satellite ground station

1 vote
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Can an 'ugly balun' be too long?

2 votes
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RF switch for half-duplex sequencing on amateur UHF satellite ground station

6 votes
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Understanding Impedance (R+jx)

2 votes
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Measuring actual feedpoint impedance for a given frequency

1 vote
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How is it possible for a halfwave dipole antenna to be resonant?

5 votes
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Using threaded rod for VHF radials

2 votes

Is a UHF connector any real disadvantage off the transmitter circuit board or at an antenna feedpoint?

1 vote

YouLoop antenna for amateur satellite reception

4 votes

Do VNA (nano) suffer the same effect of coax length to swr, as swr meters do?

1 vote
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How do you create a DC-blocking ground-shunt that looks inductive in an "L" match?

0 votes

Issues with high SWR on HF Kits EFHW 49:1 UnUn kit

2 votes
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RG-174 vs RG58 for winding toroid

2 votes

RF fading channel model?

2 votes
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How to Feed 2 x Co-Phased 4 Element Yagi Antennas?

1 vote
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Effective area of a phased array

8 votes
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Non-inductive resistors

6 votes
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Is the original satellite dish "ruined" when a slot antenna is cut into it?

6 votes

Is there a way for a device to detect if it is a Faraday Cage?

1 vote

Can ferrite rod antenna be made out of the choke?

1 vote

How would I calculate the diameter of an dish from antenna gain, or effective aperture?

3 votes
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Is it possible to bounce off multiple repeaters

3 votes
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How to correctly model a small helix antenna

12 votes
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Why is 9 kHz the lowest frequency for spectrum analyzers?

5 votes

Can WSPR really track commercial aircraft? Has the veracity of this proposed technique been convincingly demonstrated?

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