You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

Eddie,
everything I have read says groundwave at higher frequencies don't travel very far from the transmitter due to ground attenuation, it used to amuse me hearing locals calling CQ groundwave when it was short hop skip,

it depends what DB's software means by surface wave measurement,
you would think that for the software to be anything like accurate on any frequency it would need to factor in a dielectric constant for the ground and a frequency to calculate attenuation of the wave or the downtilt ,

how much difference do you think not having a matching circuit with losses that closely model the real antenna makes ?

[QUOTE="bob85, post: 549884, member: 18"] Eddie, everything I have read says groundwave at higher frequencies don't travel very far from the transmitter due to ground attenuation, it used to amuse me hearing locals calling CQ groundwave when it was short hop skip, it depends what DB's software means by surface wave measurement, you would think that for the software to be anything like accurate on any frequency it would need to factor in a dielectric constant for the ground and a frequency to calculate attenuation of the wave or the downtilt , how much difference do you think not having a matching circuit with losses that closely model the real antenna makes ? [/QUOTE]

Top Bottom