[VE2DPE] The Double Doublet Antenna for 80 and 40 Meters
 

VE2DPE's Ham Radio Blog

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The Double Doublet Antenna for 80 and 40 Meters

Posted: 26 Apr 2020 10:59 AM PDT
https://www.hamradiosecrets.com/doublet-antenna.html

A double doublet antenna enables 80 meters and 40 meters to coexist on the
same antenna system without interfering with each other. Here's how.

[VE2DPE] The Double Doublet Antenna for 80 and 40 Meters
 

On 27/04/2020 07:22, VE2DPE via rec.radio.amateur.moderated Admin wrote:

VE2DPE's Ham Radio Blog

///////////////////////////////////////////
The Double Doublet Antenna for 80 and 40 Meters

Posted: 26 Apr 2020 10:59 AM PDT
https://www.hamradiosecrets.com/doublet-antenna.html

A double doublet antenna enables 80 meters and 40 meters to coexist on
the same antenna system without interfering with each other. Here's how.

A single 80 m half wave doublet can happily work on 3.5 to 30 MHz with
an antenna matching unit or with specific feeder lengths.

A 4:1 balun is only required when feeder length is short for low
frequency bands

For this have a look at Cecil Moore's web site www.w5dxp.com

Frank EI7KS