Receiving Circuit for Non-Rotator station


#1

Hi all,
I have bought Wimo TA-1 turnstile antenna and RTLSDR V3 receiver. About to order LNAL and Bias T.

  1. How does the circuit follow? Antenna ==> coax ==> LNA ==> coax ==> Bias T ==> RTL-SDR ==> Rasp pi?
  2. Do I need a bandstop filter or bandpass filter or anything? Where does it come in the circuit?
    Thank you in advance. It would be a great help.

#2

On 1: correct
On 2: add a Bandstop filter for FM Broadcast in front of the LNA, so Ant -> BSF -> LNA …


#3

Thank you for the reply. Just one quick question, could you suggest any readily available bandstop filter, LNA and Bias T for the VHF turnstile antenna and UHF turnstile antenna? Links where I can buy them?


#4

Thank you for the reply. Just one quick question, could you suggest any readily available bandstop filter, LNA and Bias T for the VHF turnstile antenna and UHF turnstile antenna? Links where I can buy them?


#5

No need for a seperate bias tee with the V3 RTL-SDR.com dongle - it’s built in. RTL-SDR.com also sells an LNA and FM broadcast stop filter, which I believe are less than US$20 each, as well.

–Roy
K3RLD


#6

Thank you for the kind suggestions. I appreciate it.


#7

It seems like they are not weatherproof. Is it so?


#8

No, they are not weather proof. You really should have an ‘LNA box’ outside for housing these bits of gear. I suspect that you may end up changing them around as you experiment so should not plan to only use weatherproof gear… If for the only reason it will add a LOT to the cost and will limit your options for this equipment.


#9

Yep, as soon as you add “weatherproof” to your requirements, you start to enter the territory of mil-$pec and ¢ommercial stuff.


#10

I appreciate all the suggestions. Thank you all.