Topband: RX antenna ???

Douglas Ruz (CO8DM) co8dm at frcuba.co.cu
Thu Aug 27 12:37:56 EDT 2015


I have 2 more questions:

About the resistor: what kind of material???...carbon, right? and what power will disipate the resistor ?

The 2nd questions is about the transformer: i have some binocular and toroids but small ones, BN-43-202 and FT50-43...maybe adding few FT50-43 can "BUILD" some kind of larger binocular...any idea?

Thanks,

73....Douglas, CO8DM

"No creo que haya alguna emoción más intensa para un inventor que ver alguna de sus creaciones funcionando. Esa emoción hace que uno se olvide de comer, de dormir, de todo." - Nikola Tesla
  ----- Original Message ----- 
  From: Tim Shoppa 
  To: Douglas Ruz (CO8DM) 
  Sent: Thursday, August 27, 2015 10:46 AM
  Subject: Re: Topband: RX antenna ???


  Any sort of loop you can put in, will be a superior receiving antenna to using your transmitting antenna.


  Most of the simple loops have a terminating resistor that is 400 to 1200 ohms depending on details.


  I use a K9AY loop. Different loops have different mounting and termination needs.



  Difference between 1000 ohms and 950 ohms for terminating resistor, is pretty inconsequential.


  Tim N3QE


  On Thu, Aug 27, 2015 at 10:13 AM, Douglas Ruz (CO8DM) <co8dm at frcuba.co.cu> wrote:

    Hi,

    I will install a vertical antenna for TX on 160, 80 and 40m.

    I want build a Receiving antenna for those Low Bands.

    I live in a city lot, so, i can not install beverages...i have been reading in the Low Band Dxing about Receiving Loops and i like the Rectangular loop developed by EA3VY and K6SE.

    Anyway, i would like hear your ideas.

    The Termination Resistor is 950 ohms in the design but i have 1000 carbon resistor...any idea??

    Thanks,

    73....Douglas, CO8DM

    "No creo que haya alguna emoción más intensa para un inventor que ver alguna de sus creaciones funcionando. Esa emoción hace que uno se olvide de comer, de dormir, de todo." - Nikola Tesla 
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