Comm Equipment

Matt308 · 07-30-2006, 12:37 AM

Current US National Airspace Regulations require use of Very High Freguency (VHF) Double Side Band - Amplitude Modulation (DSB-AM) comm equipment operating in the 117.975-138.00MHz band. While most of the world uses comm equipment utilizing 25kHz channel spacing, Europe uses 8.33kHz channel spacing for upper altitudes (flight levels).

The VHF band has migrated from 100kHz, to 50kHz, to 25kHz (and in then in Europe to 8,33kHz) channel spacing.

What spectrum (band and bandwidth) and channel spacing did WWII aircraft use in the European and Pacific theaters? Certainly this will include both VHF and HF bands.

Put your thinking caps on for this one.

Matt308 · 08-09-2006, 11:38 PM

OUch. Not even a bite. Where are the commo geeks?

FLYBOYJ · 08-20-2006, 02:37 PM

Just font this one...

It seems the US used 2 -12 mhz. Heres a site I had packed away.

WB6FZH Classic & Military Radio- Boatanchors Mil-Radio Operating Historical Radios

Matt308 · 08-21-2006, 12:10 PM

Cool! Looks they were radios using the current day High Frequency band. Interesting that they could regulate the radiated power for short range communications. I assume for tactical reasons. I'll pour over the stats when I get a little more time.

Thanks for the post!

Salim · 12-13-2006, 04:36 PM

Yeah, I'd definately like to take a look at this field. What kind of radio sets did they put on the fighter airplanes? What was their range?

I own a book about Japanese Naval Aviators in from 1937-45, and I what I saw was interesting on the wireless telegraphs and radio telephones used. It seemed that the radio telephones carried by single-seat fighters tended to be very short ranged... initially only 10 nautical miles, followed later on by an improvement that gave it a range of 50 nautical miles.

Just how did this size up to American, Russian, British, and German radio sets?