roWaves Technologies

Certified Company ISO 9001-2008

DJ1WF VLF Pocket Receiver | 5 – 220KHz | superhet.

DJ1WF VLF Pocket Receiver is a superheterodyne receiver for CW, with freq. coverage from about 5KHz up to 225KHz (BB112 varicap tuning). BFO is implemented with 455KHz ceramic oscillator. 455KHz (3KHz BW) ceramic filter (LTM455HW) on board. Ultra small size, for portable use. Useful as VLF control radio or for other purposes (lightning monitoring, natural made noise…). Included antenna: telescopic min. 45cm max. 75cm, for optimum results. Very stable VFO, quality audio. 9V battery powered. You can use this radio to receive SAQ on 17.2KHz, RSDN-20 on 11-16KHz, MSF on 60KHz, RBU on 66.666KHz, DCF77 on 77.5KHz and other VLF stations and transmissions on this band. It is very sensitive with its telescopic antenna. Volume and ON/OFF switch are on the same side potentiometer (10k). 1k antenna RF level / mixer input level potentiometer(1k). Tuning with 10k multiturn potentiometer.
Finsihed radio, calibrated, ready to use.

➡️ General specifications:
– sensitivity: BF963 MOSFET on front-end
– antenna size: min. 45cm telescopic max. 75cm, included
– VLF band coverage: 5 – 220KHz
– internal (shielded) speaker: 8Ω/0.5W
– filter: 3KHz BW (455KHz filter), LTM455HW
– tune control: varicap BB112 with 10k multiturn pot.
– 9V (PP3/6F22) battery operation
➡️ VLF Domain Resources:
– list of VLF stations based on freq. (what you can listen with this receiver): LINK 1
– important VLF resources: LINK 2
➡️ Delivery:  starting Apr. 6th, 2023 – a new lot of 15 units will be available
Price :

339,50 lei (excl. VAT)

Disponibil pentru precomandă

(*Ships in 1-2 business days. VAT amount and the exact shipping cost will be calculated during checkout.)
Freq. domainFo5 ÷ 220KHz
De-modulation type (Rx)Dem. CW (A1A/A2A)-3KHz BW cer. filter
Filter BWFbw3000HzCW/data
Audio levelPAF800mW
Supply voltage rangeVcc9VdcPP3/6F22 battery
Current consumptionRx cur.30
max. vol. level
Tune mode-VFO...with multiturn pot.
Antenna connectorBNC-BNC
DimmensionsLXLxH...mmwith case
WeightG...gwith case

Receiving SAQ on testing the transmitter,Feb. 13th, 2023, around 12:30 UTC:

  – schematic diagram rev. 1.01 (click PDF icon) ➡️
  – assembly instructions ( for KIT) rev. 1.0) ➡️ (available soon…)

Informații suplimentare

Greutate 30 g
Dimensiuni 6 × 6 × 2 cm


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