National HFS Schematic purchase

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Schematics sent by Email £1.80 (~ $2.20 or €2.10)

Tuesday 20/1/2026 18:08
I am away until Thursday evening 21/12/2023 I cannot send any schematics marked TO SCAN until home, pre-scanned ones will be sent probably in the evening UK time
National HFS (File : 0 National-HFS P: pdf)
£1.80 (~ $2.20 or €2.10)
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National-HFS preview

National HFS Specification spec data sheet

These notes are automatically scraped from Google, Bing, Yahoo, Yandex
by an Artificially (not so) Intelligent algorithm
CountryUSA
ManufacturerNational Company; Cambridge & Malden (MA)
Alternative NameNational Toy Co.
BrandThrillbox
Model HFS - National Company; Cambridge &
YearAmateur-Receiver (amateur bands, may include broadcast bands)
Valves7: 6AK5 9002 6SG7 6SK7 6J5 6V6GT 6J5
TechnologySuperhetIF 10700 kHz
Wave BandsWave Bands given in the notes.
Power TypePowered by external power supply or a main unit. / 6 / 180 Volt
Dimensions16.5 x 8.75 x 8.5 inch / 419 x 222 x 216 mm
Net Weight8.5 kg / 18 lb 11.6 oz (18.722 lb)
Initial Price125.00 $