Top band DX-ing is real ham radio challenge. 160m is also referred as the "Gentleman's band"...
160 meters - DX-ing on the Edge...

W2PM MiniDiamond RX loop by OK1RP - part I.

10. listopadu 2010 v 22:14 | Petr, OK1RP |  Antennas
Hello,

as I am still looking for the receiving antenna which will allow me to improve the receiving performance on my pocket size QTH (250msq) I was very happy to get construction details and description of receiving loop with name MiniDiamond from Pete, W2PM. I have to say that Pete is real gentleman and he provided a lot of effort to help me with RX antennas. Pete  helped me to understand how to build the very small loops effectively for 160m band.

So after some time I decided to start with building the MiniDiamond loop and as Pete said I am making it as large as possible. All will be posted here step by step according to the progress of building. You will see used hardware, construction, mounting process, measurement and testing of the final product as same as the on-air results. If the antenna will not work then You will be able to check where I made the fault and learn from it to avoid Your own issues.

Today I will show You few pictures from bulding the main cross support.

bamboo tickness
I decided to use bamboo as the main cross support because all the other materials seemed to me worse. Fiber glass poles are too breakable, plastic poles used quite often as potatoes support on the garden are too heavy and short as same as wooden poles. On the picture You can see the used tickness. The only problem was in the local store with finding few bamboo poles enough straight, hi.

Cross mounting support
As the mounting support I used universal plate from the local store. You can see a lot of holes in the plate...great as I did not need to make any hole just decide for right one with the screws.

loop cross
The cross support is already done waiting for mounting the last wooden part which will be screwed on the rotor unit. I hope that it will fit to the old rotor used for light UHF antennas...

transformed for loop 1
Finally You can see the box arrived by snail mail with non-inductive resistor and 900/50ohms transformer units all in nice water resistant plastic houses.

transformed for loop 2
If You are interesting in this RX Loop kit then be noted that they are available for loops, Beverages and also Ewe antennas in different versions like BNC, F connectors etc.

That is all for now and see You soon with some progress with building the loop.

73 - Petr, OK1RP
...-.-
 

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