IK2ZSH

Click here to see the receiver diagram

Computer:

• Raspberry Pi 4

Receivers:

• RTL-SDR v4 (RTLSDR_V4_Datasheet_V_1_0.pdf)
• SDRplay RSP1 (Clone) (https://amzn.eu/d/0hIbxyKf)
• Nooelec RTL-SDR (nesdr_smart_rtl_sdr_v5_datasheet_revision_1.pdf)

Antennas:

• Wire antenna: sloper 40/80 meters with a length of ~20 m. Grounded balum Cbl30 comet 1:1
• 27/11m: 1/4 wave vertical aluminum dipole (from yagi Lemm D4) with 1:1 balum comet
• Diamond X-50N dual band VHF(3-1/4λ) UHF(3-5/8λ). Gain 4,5/7,2 dB. N connector

All antennas are connected to all sdr via a splitter and connected together via a Diamond HF+50 - V/U duplexer. The two antennas for the HF are then switched via a relay.