BA5SBA SDR-RTL

BA5SBA BA - China

It is adapter board to use with generic USB TV tuner.

Aka:

• “100KHz-1.7GHz full band UV HF RTL-SDR USB Tuner Receiver/ R820T+8232 Ham Radio”

BA5SBA

https://imgur.com/gallery/I4oca

Upconverter was nor working, because TCO was mounted incorrectly (rotated).

On PCB bottom, there is a place for 8 pin chip. Amplifier connected to TV Tuner 28MHz crystal and providing amplified crystal frequency to the same net as VCO.

SMD SOT-26 LABEL “S79”

• AS179-92LF: 20 MHz-3.0 GHz GaAs SPDT Switch

C5F SMD 6 pin elelement is used as mixer:

Probably it is sth from UPC family.

SMD SOT-26, SOT-363 LABEL “C5F”:

Matching:

• BGA2022 - MMIC Mixer - nie pasuje
• MAX2671EUT - nie pasuje

• NE612/SA612 - Double-balanced mixer and oscillator - 8pin nie pasuje

• UPC3215TB-E3 (C3H) - wzmacniacz
• UPC8103T - nie pasuje
• UPC8105GR- modulator Q
• UPC8106TB - (C2D) ma pin PS, nie pasuje
• UPC8108 - (C2C) to samo co 8103
• UPC8109
• UPS8112TB (C2K)
• UPC814 - wzmacniacz
• UPC815 - wzmacniacz
• UPC816 - wzmacniacz
• UPC8163TB-A (C2Y) - nie pasuje
• UPC8167TB - PS pin nie pasuje
• UPC8172TB-E3-A (C3A) - PS nie pasuje
• UPC8178TB (C3B) -
• UPC8187TB (C3G)
• UPC2757(8)TB (C1X, C1Y)