My next rig

[W1DAN]

Hi All:

BE has a new AM transmitter.

I might call them to see what I can find out about what is under the hood. Line switchers/modulators. What I kinda wanna do next on my E-rig.

http://www.bdcast.com/products/am_trans/4MX_50.html

Gee, I wonder if they have a 75M retrofit kit.

73
Dan
W1DAN

[K1JJ]

Wow, they've come a long way, baby.

I notice they're using class E for their transmitters.  They call it "patented class E technology"....

That 10KW is the only commercial AM rig in one rack, they say.

The 1KW looks the size of a micrwave oven.

T

[W1DAN]

Tom-Boy

Yes, and they have "4M Modulation" too!

I think I'll e-mail John Bissett, KD4LJD of BE and see what he can let outta the bag.

Dan

[W1DAN]

More info from the BE web site:

http://www.bdcast.com/papers/4MX_White_Paper_4M_Modulation.pdf

http://www.bdcast.com/papers/amclasse.pdf

73
Dan
W1DAN

[k4kyv]

That 50 kw transmitter looks about the same size as the early 50's vintage Gates BC1-F, that ran 1 kw with a quad of 833A's.

Compare it to this pre WW2 50 kw:

[KE1GF]

Hands down one of the most impressive things I've seen. Dan, plz ask what's the highest frequency it'll go to when you call. Didn't I see this a few months back on the class-E forum?

[W1DAN]

Hi Bill:

You may have seen this before.  I went to a local SBE convention and got  basic sales info on it two days ago. I read the two papers last night. The Class E was old. The modulation was new.

I sent an e-mail to the regional sales manager (a ham) inquiring about a PDF manual on the rig. No answer yet of course. Probably no as the modulation scheme is patent pending.

Don:
Yes it aint the same as the wall of cabinets with tubes, air and water cooling!
I saw a Western Electric 50kw tx at WHAS AM a few years back...wonderful cinstruction. I do miss that when working on the SS stuff.

Maybe I can Class E an 833?

73
Dan
W1DAN