MRF300 amp!

[thewisepranker]

A mate of mine sent me this. At a guess what do we reckon these components are ?

There's no need to guess. There are 5 capacitors, 2 inductors and one resistor contained within the large yellow circle. The component in the other yellow circle is a Zener diode.

[rigmo]

Yeh I saw them but you can’t buy them anywhere. I saw them on eBay months ago but now they have vanished.

I can get for you if you interested PM me

[rigmo]

It might be an idea to get one of those Chinese push pull MRF300 amps and change the components/coax lengths to match the ones described in the NXP test circuit.

Mrf300 is does get extremely hot. But however there is a work around this to cool it

Sent from my AMN-LX9 using Tapatalk

always be problm get good matching...

[nrg-uk]

Thats my kitchen work surface! lol

[XXL]

A mate of mine sent me this. At a guess what do we reckon these components are ?

There's no need to guess. There are 5 capacitors, 2 inductors and one resistor contained within the large yellow circle. The component in the other yellow circle is a Zener diode.

Yes I know that. But what value ?

Doesn't matter now anyway.

[rigmo]

[RF-Head]

Did you test it?
I was not realy happy with it

[rigmo]

Did you test it?
I was not realy happy with it

NPX tested

[RF-Head]

Nice picture of a NXP proto
Look at the hairpin on the drain solder will melt)
I have a orignal pcb here woth the components and it's not working correct
The output match is not realy good and i think only calculated and not tested
also the match between the stages giving problems and is totaly not wideband

[rigmo]

Nice picture of a NXP proto
Look at the hairpin on the drain solder will melt)
I have a orignal pcb here woth the components and it's not working correct
The output match is not realy good and i think only calculated and not tested
also the match between the stages giving problems and is totaly not wideband

[RF-Head]

Yes but test it and you will see!