Comparison of the Micro PA50 with the Micro PA50+ or the Micro PA50 Plus
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- Опубліковано 22 лип 2024
- All you need to know about the Micro PA50 HF amplifier.
Link to the manual of the Micro PA50
drive.google.com/file/d/1hPdx...
Link to the manual of the Micro PA50+
drive.google.com/file/d/1dj9I... - Наука та технологія
Great call sign and good informative content.
I had quit using my Micro PA50 because the fan was too loud. I like your solution
The Noctua Fans are the best for litlle noise. In my opinion! 73´
At least in my case, the internal fan of the PA50 was unnecessarily high RPM.
I simply put a resistor (can't remember the value) in series with it to lower its speed.
It's way better now. Even with the reduced speed it still doesn't get much above 40°C even when contesting in CW at 40W.
It's still a little annoying so I think I will open it again and put a higher value resistor to reduce the speed a little more.
It's not advisable to turn the fan completely off because usually just having a little moving air on the heat-sink makes a huge difference (compared to no air movement at all).
Thanks for sharing your experience.
Thank you for this awesome informative video , I own Hermes Lite 2 SDR and I really want to add an external low cost Auto tuner and PA
Thank you for the video enjoying the hobby more than anything
Very good information, thank you. :)
Thank you!
Can you tell me if the micro pa50+ is able to run at lower power output of max 7-10 Watts. I'm looking to use it with my hermes lite 2 to drive an rm Italy amplifier which requires 7-10 Watts input at maximum. Thanks for doing these videos on the hermes etc very informative.
Are you going to change the fan on the 50+
Hi, got my MicroPA50+ today and when testing I noticed that on 15m (21.220) when I press PTT, the unit goes into "BYP". SWR without tuner is 1.2. Any thoughts why this is happening. Other bands, PA mode is working just fine.
I had the same issue. 15m and 30m don't work and just show BYP. There is a multi-click option that is missing from every manual I can find, that is for "30/15m Open/Close". This comes up after 8 clicks. Do the 8 clicks until it says "open". Then power the amp off and back on. This seems to enable/disable 30m and 15m operation. Same as for the 7 click menu option for "17m/15m SWR On/Off". No mention in the manuals, but turns the SWR meter on and off for 17 and 15m (no power cycle needed).
Can this be used with XIEGU G90?
Where is the best place to order your pa50+ ?
Can this amplifier be driven with less then 5 watts ? Lets say 3.5 watts ?
Very helpfull!
You say it was shipped with Firmware V2.5......Is the high SWR Issue really solved in this version? (some YTubers say NO!)
if 12v 0.5w input~~~~ output? sorry i am poor at english.
Where can I buy this Amp?
AliExpress
My QRP rig has no output power control. It puts out 5W. My PA50+ goes over 50W with the 5W input. It sets off the alarm and then shuts off the amp. I did notice that the amp can run at a much lower voltage. And its output power drops. I tested with a LiPo battery that was a bit low at 11.1V. So I ordered a 9V power supply to see if I can get the power output down and the alarm off. If I can get 25W out I will be happy.
goodjob
i hope you can make a video on the firmware update thank you.
No worries. I guess I will have the serial to USB converter in a week or two
Done. Just got my serial to USB module in today, so I quickly made the video.
What fan is that?
I think it is just a generic 80mm computer case fan. ;)
Dear sir it's working with usdx 8band qrp chinese radio
07:40 That resistor that you soldered on top of the other resistor is not 68 Ohm as you mentioned. It is indeed 47 Ohm ...
Nice job. However a comparison of the inside of both amps would have been nice. Maybe there wer changes too in the circuit.
And please allow me a little advice: get yourself a tripod. It makes your videos less shaky and you have both hands free to show things.
Kort samengevat had een en ander in 5 minutes uit de doeken kunnen gedaan worden.
Speel het aan dubbele snelheid af, dan kan je de video bekijken in 5 minuten.
73´