Power Genius XL Amp from 4o3a and Force12 Preview

Excellent. One more step towards a seamless station

You might wait until you see the full specs before you make that judgement...  Just sayin'.

Rob..  whats the swr tolerance with that final?   All my antennas are under 2:1 anyhow even at the Band edges.

Cant understand: Flex6000 ready amp. We have build at our local radio club 22 of these type of AMP's. They have a Banana PI and Arduino as assistant for our B26-controller, a automatic antenna tuner, BPF, touch display and LAN interface also for real WAN remote and work from 160 to 6m. We can controll our amp via touch display or tablet (WLAN) or internet (VNC) or smart phone. Further 30 amp's now exist from homebrewer in EU and USA. We still develope a new 2k5 PA board and will show our new 2K5 Amp at Ham Radio in Friedrichshafen (fleemarket). Projekt called B26-PA, it's none commercial and only done by Ham's. Some info's and pictures can be found at facebook or Yahoo group and at rf-kits.de. Ranko's PA is not new. It's one of many(!) others (Expert, Yuma, Hilberling ...). Only new will be if he ask for less then 2.500$ :-) Our B26-PA is also not new ! We have to wait for real information's to compare - not for nice color pictures or youtube video. 73 Chris

Simon please contact Reinhard DH3NAB reinhard@rf-kit.de for details - it's our PA project manager from our local radio group B26

Larry,

Like Simon said (get it?) - SWR is not the issue. These will run into a open, i.e. no load at all, or into a short, without destroying themselves. Since the device is $185 each, I have not tested this but there are plenty of videos around.

You **** one with heat, like Simon said. High SWR will destroy your LPF, that's what gets fried if you go into a high SWR load at high power for any real amount of time which will cause your filter to heat up to melting point, or you'll **** a cap first.

Simon - yes, I know, thank you. I designed my AMP for me and I operate HF SSB, and CW and I wanted it dead silent. I talk for typically 10-30 seconds at a time. In this scenario, I run ice cold, fanless, at 1400W peak with one device. The heatsink and copper spreader on this amp are huge for one device and it's properly oriented to breath correctly, not shoved into the bottom a case, like every other designer out there wants to do.

Also, the input is attenuated 16dB so it can not be over driven with a 100W rig under any circumstances, so no need for the ALC circuitry nonsense. I typically achieve full power with somewhere between 20-40W input. 

I'm not in any way interested in making the amp super complicated and therefore, by definition, much less reliable. Don't want to make it a IOT device. It's self regulating and way over designed not to **** itself up.

The 403A amp looks very well designed. Another small variation on the output transformers and balun. Looks nice, nice PCB layout, etc., etc. However, I like to make $$ on my business ventures so I won't be making any amps for ham radio operators! That's a losing proposition from day ONE.

Since I operate from all over the house, back deck, etc., over WLAN with my FLEX 6300 and a laptop, I leave my amp on 27/4. It's been running non stop, silently, for about a month at this point. 

Try that with some other amps..



N4GA

Found this info:  http://rf-kit.de/en/

Steve,

A couple of items. Have you heard any other specs on the amp ? I heard the main purpose of this video which was demonstrating the clean tx  and read it includes a large isolation which is very important for so2r but what bands (160 - 10 ? ) and approx cost ? Other considerations are acom and om power but I do not want to rely on DDutil. Nothing against it, but have not needed it yet and prefer not to rely on it.

Also, I read you have the antenna genius which lead me to research. The video for that seems great and I contacted Ranko and learned that the antenna genius + will support control for his stacking switches which is just fantastic. I forgot to ask however does the antenna genius follow changing band commands to SSDR from n1mm+ ? In other words, does it matter if I switch bands on my flex manually via SSDR like in his video or if n1mm+ does it via their entry window band selector ? It seems to me that the antenna genius will react the same regardless if the band is switched in SSDR manually or if n1mm+ does the same thing via software. Just looking for additional info.

Finally, in previous thread I respect your view and was simply trying to accomplish the same thing but in a different manner. Sorry for not doing a better job.

Hi Rick,

I have not heard the 2 in 1 which would be special and if so acom 2000a price would be very reasonable. I suspect we will know a lot more when Dayton kicks off.