Hello Wolfgang,
Thanks.
I have updated my description about the MHL21336 amplifier at www.dd1us.de
Kind regards
Matthias
Question on using a MHL-21336 small chip amp.
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Hello Wolfgang,
Thanks.I have updated my description about the MHL21336 amplifier at www.dd1us.de
Kind regards
Matthias
Hi Matthias DD1US .
I made this amplifier using your schematic. I bought the module in september 2019 (Ebay) but i assembly this week. My module isnt counterfait. I supply with 28v in both pins and i have approximately 2 until 3 watts ( sorry, but i dont have how calibrate measurement equipment ).
73!
PY1SAN
GG77SN
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Hi Sandro PY1SAN,
very well done. I am glad you got the right part and it works.
I have a replacement part on order already for quite some weeks but I guess delivery times are much higher now due to Corona.
Stay safe !
Kind regards
Matthias
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I ordered so far 6 units. All of them marked brand new...
Two were dead on arrival, two had a short resulting from bad soldering of refurbished leads and two of them with "fake" modules.
I tested the fake and it does deliver over 10Watts at 2.1Ghz. However at 2.4Ghz it have about 0dB gain...
Anyway, importand to know that you must not feed all modules with voltage to Vdd1 before applying it to Vdd2.
It is not in the spec, but Vdd1 provide bias to the output transistor. LDMOS do not like VGS greater than VDS...
Nevertheless I notified the sellers and all of them refunded me with no negotiation..
