As last solution, if you stuck, I can offer my help.
Distance is a problem but if you send it, I can try my best.
Received in the past 6 "dead" plutos and only 2 were really dead, the other 4 are working again. 1 with a squirrly signal but it works 
If it is really dead, I can send you a complete "new" moddified one if you want. TCXO, GND, PTT , whatever you need.
Write me an eamil and give me some days, I do not check every day my mails.
Hope I can help
73
Sandor
We spoke in the whatsapp group , i gave you the 10ohm ....
Hello,
Received today a DUR-Line +Ultra Quad LNB and it is a PLL with RT350.
The Crystal is on the TOP side with 25MHz.
Horn diameter: 52,5mm with plastic
Mounting dia: 40mm
The cover is 4mm deep , enough space for parts 
Also received the QUATTRO Version which is a PLL too!
Greetings
Sandor
DM4DS
Edit: Forgot Cover pics
Edit 2: inserted pic Quattro inside
If someone needs small PCBs for BiasCircuit. I have some PCBs left with LP2951, which I have and can send with the package.
Only the Paint must be removed from the Vi,Vo, GND areas on some as you see on the pic.
Cap Filter?
I´m very happy with mine
Build after reading: http://www.ko4bb.com/ham_radio/Pipe_Cap_Filters/
I´m using 2 of them and love em.
vy73
Sandor
Thought IU2KAC wants the Pluto in his LAN. Then the hardware is the wrong one. Thats why i posted before, but now it looks that he just wanted to extend the USB, then its ok.
About extender:
I tested an extender too , bought it for the LimeSDR.
It´s a direct connection like USB, but with an Network cable as extension .
The Pluto/Lime or whatever isn´t available in the network like it is if connected via a USB / LAN Adapter to your local network, cause it isn´t in the network. (Lime does not support direct LAN)
My adapter as passive (without 5V extern) and worked over 5m LAN cable without problems. Took a standard CAT7 cable between, without configuration and it works. While the LimeSDR supports USB3 and my adapter don´t , i stopped experimenting.
In my opinion, on a Pluto, the USB/LAN solution makes more sense if you already have a LAN. Then the pluto is from everywhere available, from Smartphone, tablet, PC, notebook etc. Also if you have a "server" running or super fast internet, from the WAN. The bandwidth is massive it needs, don´t forget that.
Maybe you wanna try USB/LAN with your pluto IU2KAC...
sorry that i write in english. Also not my mother language but much better than my italiano
Have a good time and stay safe!
A small help could be the german PDF.
You can translate sentence by sentence and fill in your things and make the X at the right spot
https://amsat-dl.org/wp-conten…/02/AMSAT-DL-Beitritt.pdf
Maybe Peter has a english form
vy 73
Sandor
Hello
I can´t read the first post but i think he tryes to config PLUTO for LAN usage.
You are using the wrong Hardware!
This is a USB Extender , not a USB / LAN Adapter.
It´s to make a USB "longer" via LAN cable . Not to adapt LAN via USB.
Greetings
Sandor
Over the last 2 months I worked on the amp, original designed by PA3AXA, Rens.
After eliminating all problems and a lot of optimizing after pimping the amp, I am proud to say: It´s done.
The "next" version of this amp is running smooth and cold, with less current, lower Voltage but much more gain.
Gain: 60dB , up to 66dB (minimum ~55dB)
Rated constant output: 20W (SingleTone)
Max Out: 30W but thats overkill even with low currents!
Max input: ~15dBm! (Pluto has +3dBm @100% drive)
It´s super linear up to 80% of its power. Hope Matthias DD1US can catch a sample to go deeper into measurements than i can do with my siglent SSA3032X analyzer. But psst, he doesn´t know that
The plan is to build up to 15 pieces. Ready to use with 12V + 24V (22-28V).
The 12V can be used as PTT or running 24/7. The heat with low currents isn´t high.
Its mounted on a heatsink but for long term use, you should place a fan on the heatsink.
If you are interested write me an email: dm4ds@gmx.de (please give me 1 2 days for answer)
I hope to update my homepage soon with more informations and pictures + Videos of the measurements.
Here are some pictures: while the minimum of my TG is -20dBm I inserted an extra 10dB attenuator.
the PCB
Case all will be build
Case
MAXIMUM Output with -13dBm input!
After 10 minutes passic cooling @20W constant output sweep
Display MoreThanks Sandor,
I will check tomorrow and will report. I have an idea what Rs you mean. To be sure it would be helpful if you could make circles around the Rs in the picture of your PA.
Have a nice weekend
Walter
DK1ZA
I first have to make a picture from the repaired one.
The "old" one is no longer in use while the PCB traces burned after more than 35W on DATV....
Display MoreHello everyone
I faced another weird issue, but this time on another amplifier.
The idle current should be around 1A, but it's only 6mA !!
When I touch the gate of the transistor at the top of the picture, the current increases to 1A.
What can be the issue? I'm checking all the connections. The only thing I can think of is a loose connection to ground somewhere.
Any ideas?
Bests
I received a different Amp with the "same" problem.
The problem was quick found . It has nothing do to with the doherty or what ever. There are small 10Ohm R between the 28V and the Bias of each Transistor and they were "burned" . They are not complete dead, they are 50kOhm and so the voltage is wide too low.
I soldered in new 10Ohms (5 on this one here) and the complete amp is working excelent. Nothing on the doherty was changed!
Measure them on yours and i hope it´s the same on your side. You can measure them inside the AMP, no need to desolder them . 10Ohm or 50kOhm is a wide range and your Multimeter can this
Have a nice weekend
Sandor
DM4DS
Here is my video about the 0.2ppm muRata TCXO change on a small PCB...
Also the much easier GND Mod for LAN use.
How do you inject the sound into the TRX ? Via interface or from loudspeaker to microphone ?
Via Sound Interface from PC to TX
Or via VAC (Virtual Audio Cable) if using a SDR.
Update:
the amp burned all PCB trace behind the combiner after 30 seconds on DATV with ~35W.
Flo tried to repair it but was not able to do. Now it´s running only on 1 Transistor and running ~35W with very bad efficency.
I modified myself another one and this one is doing 150W @ 28V @ 16A without any problems.
Greetings
Sandor
DM4DS
Old Post
--------------------------------------
Today i got the PA from DB8TF - Flo back . Amazing.
Pictures #225
First QSO was with Flo and its fantastic. For SSB it´s quick too much power with my 1.2m dish. I think it´s easy to trigger LeiLA , we didn´t!
In KG-STV super clear Eye-diagram.
After i figured out how to stream the small ksyms, i´m good for some DATV
Thanks again Flo. Surprise follows!
