[BC] Backup TX for DAX1

[Alan Alsobrook]

I think the Nautel J-1000 is probably the easiest to do a field 
frequency change on. You are supposed to be able to shift it from one 
end of the band to the other in about 1 hour. (perhaps even less if done 
on the bench).  The problem with a frequency agile AM transmitter is 
that the output network has to match the finals to the load from 540 
KHz, to 1710 kHz. That's a range of about 2 octaves. That would be the 
similar to moving an 88.1 MHz FM transmitter up to 278 MHz. Thus you can 
see it's quite a jump.

Bailey, Scott wrote:

> A good suggestion to the manufactures of the 250/1 KW, small, rack mount
> transmitters is start making these low power transmitters where one
> change the frequency by say dip switches. I think Nautel has already
> started doing this to their J-1000 boxes.
> 
> This would be great for the engineer that maintains multiple AM sites.
> You can have one ready to go for a client that is off in an emergency
> situation.

-- 
Alan Alsobrook CSRE AMD CBNT
St. Augustine Fl. 32086 904-829-8885
aalso at Bellsouth.net