• Country
• New Zealand-Aotearoa

• Manufacturer / Brand
• Cromwell, Gulbransen (NZ), Pacemaker, (Brands) Clarke, H. W.; Wellington

• Year
• 1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 341650

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

• Number of Tubes
• 6

• Valves / Tubes
• 6S7G 6A8 6S7G 6T7G 41 80

• Number of Transistors

• Semiconductors
• Vibrator

• Main principle
• Superhet with RF-stage; ZF/IF 465 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• Line / Storage batteries (perhaps also batteries) / 230; 6 Volt

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Cromwell Sentinel 6CV3 - Cromwell, Gulbransen NZ,

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes

• 6-valve superhet with RF stage dual-wave receiver.

  Can be operated from 230V AC mains or 6-volt DC via the built in vibrator power supply.

  Uses a momentary on switch for the dial light to avoid this constantly draining the battery.

  Available in two cabinets styles - the Sentinel for portable use and the Server for mantle use (J14 cabinet).

   

• Author
• Model page created by Brian Stevens. See "Data change" for further contributors.

• Other Models

• Here you find 117 models, 113 with images and 104 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Cromwell, Gulbransen (NZ), Pacemaker, (Brands) Clarke, H. W.; Wellington