• Country
• Hungary

• Manufacturer / Brand
• Budapesti Rádiótechnikai Gyár (BRG)

• Year
• 1984 ??

• Category
• Miscellaneous (Other, Various) - see notes

• Radiomuseum.org ID
• 205047

Click on the schematic thumbnail to request the schematic as a free document.

• Main principle
• RF-Circuit or wave trap (separate, can also be an antenna with amp.)

• Wave bands
• VHF incl. FM and/or UHF (see notes for details)

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Duplex Szűrő - Duplexer - Duplexweiche 2S79-722 /A /B /C /D - Budapesti Rádiótechnikai Gyár

• Dimensions (WHD)
• 203 x 38 x 110 mm / 8 x 1.5 x 4.3 inch

• Notes

• 4 different models with common characteristics:

  • duplex spacing: 3.5 MHz
  • max. transmission loss:
    • emitter chain: 1 dB at f_E ± 0.5 MHz
    • receiver chain: 1.3 dB at f_R ± 0.5 MHz
  • min. insertion loss:
    • emitter chain: 50 dB at f_E ± 0.5 MHz
    • receiver chain: 70 dB at f_R ± 0.5 MHz
  • standing wave ratio: max 1.3 at 50 Ω
  • line capacity: 50 W

  Model specification:

  • 2S79-722/A and 2S79-722/B
    • frequency range: 155 ... 174 MHz (2 m band)
    • version /A for f_E < f_R
    • version /B for f_E > f_R
  • 2S79-722/C and 2S79-722/D
    • frequency range: 146 ... 166 MHz (2 m band)
    • version /C for f_E < f_R
    • version /D for f_E > f_R

• Net weight (2.2 lb = 1 kg)
• 1.5 kg / 3 lb 4.9 oz (3.304 lb)

• Literature/Schematics (1)
• -- Original-techn. papers. (Erzeugnisunterlage System U-700, Ausg. 1/1984)

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 83 models, 76 with images and 28 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Budapesti Rádiótechnikai Gyár (BRG)