Preselector-Circuit

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HiSDR Preselector Circuit and Partlist

Preselector Board Circuit

HiQSDR Preselector Circuit as PDF

HiQSDR-Preselector circuit


Preselector Connectors

  • J1 Power 12V IN
  • J2 External Power +7V 1A OUT (If optional switch regulator soldered)
  • X1 Preselector OUT (For future connections t a high power amplifier
  • X2 Preselector IN (Input from HiQSDR)
  • J3 J3suffix
  • K1-K4 Driver Module connectors for 1 Watt Funkamateur PA or 8-10 Watt MPPA

The picture below show the description of the connectors.
Pin one are marked with a small hole in the pcb.

Preselector connectors

J1 Power +12V VCC
PIN Description
PIN 1 VIN +12V
PIN 2 VIN +12V
PIN 3 GND
PIN 4 GND


J2 Power +7V VCC (If optional switch regulator soldered)
PIN Description
PIN 1 VOUT +7V
PIN 2 GND
PIN 3 GND


J3suffix
PIN Description
PIN 1 ALC_SIG
PIN 2 FWD_PWR
PIN 3 REFL_PWR
PIN 4 PTT_SIG
PIN 5 TX_ON
PIN 6 GND
PIN 7 PA_ON
PIN 8 GND


X1PreselectorOUT
PIN Description
PIN 1 BAND_1A
PIN 2 BAND_2A
PIN 3 BAND_4A
PIN 4 BAND_8A
PIN 5 PREAMP_ON_A
PIN 6 RX_ACTIVE_A
PIN 7 CCTX_A
PIN 8 CCRX_A
PIN 9 NC
PIN 10 GND


X2PreselectorIN
PIN Description
PIN 1 PRESEL_1
PIN 2 PRESEL_2
PIN 3 PRESEL_4
PIN 4 PRESEL_8
PIN 5 PREAMP_ON
PIN 6 RX_ACTIVE
PIN 7 CCTX
PIN 8 CCRX
PIN 9 NC
PIN 10 GND


K1
PIN Description
PIN 1 Not used
PIN 2 GND
PIN 3 GND


K2
PIN Description
PIN 1 GND
PIN 2 PA Power (+12V)
PIN 3 GND
PIN 4 RF_OUT (Bu3)
PIN 5 RF_OUT (Bu3)
PIN 6 GND


K3
PIN Description
PIN 1 +12V
PIN 2 ALC_SIG
PIN 3 FWD_PWR
PIN 4 REFL_PWR
PIN 5 GND
PIN 6 RF_IN
PIN 7 GND


K4
PIN Description
PIN 1 GND
PIN 2 +12V
PIN 3 GND
PIN 4 GND
PIN 5 RF_IN
PIN 6 RF_IN
PIN 7 GND



Preselector Partlist

Here are the complete Preselector Partlist as Open Document Preselector Partlist and also as PDF Preselector Partlist.


Preselector Jumper Settings

JP3 TX Driver Prefilter Selection
If close 1-2 the Filter was not used on transmit, if closed 2-3 the filter was used for transmit and receive.

Preselector JP3 Circuit

  • JP3 location on the PCB
Preselector JP3 PCB



Filter Module Board Circuit and Partlist

Preselector Board Circuit

HiQSDR Preselector Filter Circuit as PDF

HiQSDR Preselector Filter


Filter Module Partlist

Here are the complete Preselector Partlist as Open Document Filter Module Partlist and also as PDF Filter Module Partlist.

We have a helpfull overview Filter Checklist as PDF and Open Document Filter Checklist as ODS File.


Filter Module Jumper Settings

Dont forget to close Jumper 3-4 on each used filter board to use the plugable MPPA and Bu3 RX/TX!

Filter Jumper description

Filter Board Jumper
PIN Description
PIN 1-2 12V max. 80mA Bias on Bu1 RF-RX (To use active antenna or preamplifier) Normaly open, no Bias on Bu1 RF-RX
PIN 3-4 Signal to Bu2 RF-TX or Bu3 RX/TX at transmiting With plugged MPPA close it to use Bu3 RX/TX



Datasheets

Datasheets from preselector semiconductor parts

74HCT04
74HCT132
74HCT238
74HCT245
AD8350
ADT4-6T
Axicom HF-3 Relais
BC858
BC148W
FDN302P
FD434P
HMC284MS8G
LM22675
Micromatch female
Micromatch male
TL78L05F
ULN2003AFW

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