hamr

All posts tagged hamr

After serving me for many years, my good old keyer, microham mkII stopped keying last night.
Of course this happens at the least convenient time, during a contest.
I got an idea of where the fault lies, but if any of you guys has a schematic if the MKII lying around, I would VY much like a copy.
73 de LA6TPA
Geir

Failed Microham MKII

Busy EME morning

As shown in my previous post, my new 144MHz antenna setup works much better than before.
It has been a very busy morning, whit lot of QSO’s. Even worked a single yagi station, only worked 4 and up yagi stations before.

Some of my QSO’s this morning

Bussy

I have now replaced the single 120mm 6000 rpm fan with twin 80mm 13000 rpm fans.
You cannot see them in this video clip, but you can certainly hear them.
The twin fan setup is a lot more efficient then the single fan. Full load temperature dropped somewhere around 7 deg. C, and that’s a lot. Also; it may be a bit hard to see on my messy work bench, but I have now modified the OP-amp circuits on the LED Audio VU meters, and they now shows forward and reflected power.(they are on the desk just in front of the pa-deck)
By the way, here finishing a QSO via the moon with DK4RC.