Fatboy 600 watt AB-1 Base

[mackmobile43]

Hello,

I have one of these units. Are you guys still looking for pictures?

Thanks,

Pretty Pleeeeeeeease!

 

[NorthStar]

People will buy anything!

 

[ExitThirteen]

What I don't understand (even more than the lack of biasing and/or lack of a negative feedback circuit) is why people use SD1446 transistors?? They're rated at 50 mhz and up! They'll WORK in HF bands, but that's not where they're designed to run. If they're going to build amps like that, at LEAST put some good transistors in, like MRF 455/454's, or the Toshiba 2SC2290's. They are rated for HF frequencies, at least!


~Cheers~

 

[2WT023]

Fatboy 600 AB biased Base

This one is less than 6 months old. Can't imagine that they changed the configuration much between then and now.

Side note: I found it rather interesting that Fatboy positively charged the chassis on this unit to drive the fan. When you switch the power on, once the cover makes contact with the chassis the fan kicks on. The ground wire is physical to the chassis. So tell me, what are your thoughts on this practice?

 

[ENERGIZER]

8pill base amp

A friend of mine did some trading and got one. Amazing how fatboy can market a 1446 1x4 class C amp as a AB-1. Xforce makes a borderline class B amp but this Fatboy amp is total fraud. Works good but the biasing sure as hell isn't class AB-1 or AB. I own a few Class C amps and this amp is built the same way.

am looking for new base amp 8 pill ! New to base unit setup no clue. Running a CONNEX-4600TURBO OR RCI-2970N2 W/LMR400 COAX PLZ HELP OR REFER SOME ONE WHO CAN THANKS (344 aka ENERGIZER) from the LoneStar State:headbang

 

[BOOTY MONSTER]

since you've got SSB radios have you considered a x-force base amp ? most are B biased .
better yet , for a little more than a 8 pill base amp you could get a real amp with a 3-500 in it .

HF AMP, 1KW, (1) 3-500Z TUBES, DOMESTIC 120VAC