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Метка: amplifiers

22.05.202322.05.2023 enthru hamradio amplifiers, mrfx1k80

Last (i hope) holes in the plate drilled.

19.05.202328.05.2023 enthru hamradio amplifiers, hf

Some LPF measurements and settings.

Tuning LPF

19.05.202328.05.2023 enthru hamradio amplifiers, hf, mrf9180

Dead mrf9180 inside

I was doing some measurements and accidentally disconnected supply power with connected power input from driver. So gates got more than negative 0.5v and right gate has died.

14.05.202319.05.2023 enthru hamradio amplifiers, mrfx1k80

Drilling holes in a coper is a pain.

And bigger pain is to cut the thread in it.

11.05.202315.05.2023 enthru hamradio amplifiers, hf, mrf9180

MRF9180 amplifier — feeding transistor via balancing choke

Let’s try to add balancing choke to the schematics — feed sources from 4 turn choke for each transistor (8 turns summary) with power connected to the central point.

09.05.202315.05.2023 enthru hamradio amplifiers, mrf9180

MRF9180 HF amplifier, BFG591 as driver.

BFG591 as driver.

08.05.202315.05.2023 enthru hamradio amplifiers, hf, mrf9180

MRF9180 HF amplifier.

Based on mr9120 aliexpress kit.

08.05.202315.05.2023 enthru hamradio amplifiers, mrfx1k80

More new suff arrived.

Plate for mrfx1k80, PTT sequencer and SWR bridge.

05.05.202309.05.2023 enthru hamradio amplifiers, hf

This month will be month of receiving cool packages, that is the first one :)

MRFX1k80HR5 transistor and ABLNO 96MHz clock

03.05.202304.05.2023 enthru hamradio amplifiers, hf, tube

Old tube stuff I was using.

Photos of tube amplifiers

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