Fireball FB1 (us Army) ???

Who has ever seen this device on this light.
Fireball FB1 us Army ?

 

[dmathieu]

I've seen and had many of these, and do believe they are radio noise reducers, but not necessarily US Army. I got a few that were Chicago area police depts. The one below I do believe may be US ARMY???

 

[bpollard]

many years ago, I worked for a company called Shakespeare. We made antennas of all kinds, and a huge part of our business was the US Military, especially the US Army.

The Army used a lot (probably still do) of HF radios back then. HF as opposed to VHF of UHF. High Frequency radios are particularly susceptible to interference from things that VHF and UHF are more tolerant of. Such as alternators, ignition systems on older vehicles and so forth.

That is why you see MilSpec rated equipment from those times that have so much RF reduction circuitry such as this.

 

[stansdds]

Certainly looks like it is for radio noise reduction. As for that Fireball being purchased by the military, could have been and if it is a 24 VDC version, most likely was military. If it is 6 or 12 VDC, then it could have been for a non-military application where noise cancelling was necessary.

 

[bpollard]

Certainly looks like it is for radio noise reduction. As for that Fireball being purchased by the military, could have been and if it is a 24 VDC version, most likely was military. If it is 6 or 12 VDC, then it could have been for a non-military application where noise cancelling was necessary.

yes indeed. here's a tip: when you see photos of older police cars and stuff, look for the giant "whip" antenna mounted on the rear of the vehicle. Big long steep whip. Sometimes those are CB radio antennas, but most of the time they are HF radio antenna. Those radios are very sensitive to interferance