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Hi Homer,

I'm using a homebrew terminated end fed antenna based on the dimensions of the Bushcomm Mil-1.

I have homebrewed a 9:1 unun on a BN73-202 binocular core, and a 470R thick film carbon resistor. Only use QRP so the small size of the balun is not a problem, and neither is not using a heatsink on the 100W rated resistor.

Before using this I was a bit sceptical about using a terminated antenna at QRP power levels, however it is working really well for me. I find it fantastic for making the most of my very short portable operating sessions and am having great results with it strung up at no mpre than 2 metres above ground.

It's fantastic being fully frequency agile with no need for a tuner or for making adjustments to the antenna. Like you, I am full aware that there are weaknesses, but these are more than compensated for by the benefits to me. And the performance is actually pretty good. Over the past couple of weeks I've had QRP to QRP contacts across Europe, had easy QSOs into Algeria and a fantatic QSO on 17m with NY2PO (3480 miles, or 5601km) early the other evening. All of these have been while operating portable with minimum of equipment and at a maximum power of 5W.

Very pleased indeed.

73 M3KXZ

<blockquote data-quote="Pete Millis" data-source="post: 777838" data-attributes="member: 61855">Hi Homer,I&#039;m using a homebrew terminated end fed antenna based on the dimensions of the Bushcomm Mil-1. I have homebrewed a 9:1 unun on a BN73-202 binocular core, and a 470R thick film carbon resistor. Only use QRP so the small size of the balun is not a problem, and neither is not using a heatsink on the 100W rated resistor.Before using this I was a bit sceptical about using a terminated antenna at QRP power levels, however it is working really well for me. I find it fantastic for making the most of my very short portable operating sessions and am having great results with it strung up at no mpre than 2 metres above ground.It&#039;s fantastic being fully frequency agile with no need for a tuner or for making adjustments to the antenna. Like you, I am full aware that there are weaknesses, but these are more than compensated for by the benefits to me. And the performance is actually pretty good. Over the past couple of weeks I&#039;ve had QRP to QRP contacts across Europe, had easy QSOs into Algeria and a fantatic QSO on 17m with NY2PO (3480 miles, or 5601km) early the other evening. All of these have been while operating portable with minimum of equipment and at a maximum power of 5W.Very pleased indeed.73 M3KXZ</blockquote>

[QUOTE="Pete Millis, post: 777838, member: 61855"] Hi Homer, I'm using a homebrew terminated end fed antenna based on the dimensions of the Bushcomm Mil-1. I have homebrewed a 9:1 unun on a BN73-202 binocular core, and a 470R thick film carbon resistor. Only use QRP so the small size of the balun is not a problem, and neither is not using a heatsink on the 100W rated resistor. Before using this I was a bit sceptical about using a terminated antenna at QRP power levels, however it is working really well for me. I find it fantastic for making the most of my very short portable operating sessions and am having great results with it strung up at no mpre than 2 metres above ground. It's fantastic being fully frequency agile with no need for a tuner or for making adjustments to the antenna. Like you, I am full aware that there are weaknesses, but these are more than compensated for by the benefits to me. And the performance is actually pretty good. Over the past couple of weeks I've had QRP to QRP contacts across Europe, had easy QSOs into Algeria and a fantatic QSO on 17m with NY2PO (3480 miles, or 5601km) early the other evening. All of these have been while operating portable with minimum of equipment and at a maximum power of 5W. Very pleased indeed. 73 M3KXZ [/QUOTE]

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