Blog

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May 10, 2021
Category: General
Posted by: lex

Today I installed one the Electron Volt Limited AGC's in my QCX+ and it works like a charm.

Continue reading . ..  

May 6, 2021
Category: General
Posted by: lex

Recently my son-in-law got a tip that the Creality company had a nice set offer for the LD-002R resin printer. That set would include the LD-002R resin printer and the UW-01 washing and curing unit for a very reasonable price. 

continue reading . . . 

Apr 23, 2021
Category: General
Posted by: lex

Because I recently got a addition FT817ND I tried to order a new speaker at my local modelrailroad shop but they had problems delivering it (it was out of stock).

Continue reading . . . 

Apr 15, 2021
Category: General
Posted by: lex

Years ago my childeren build a few crystal radio kit from Chris Dorna PE1DZX which he sold through his website. When Chhris stopped making these kits, he let that website expire to be lost for ever. Recently I was contacted by a ham who wanted to build these radio's and still had the kit building instructions in PDF. I asked Chris if he was ok with it that I shared these PDF's and hosted them on my website. Chris was ok with that so from now on the kit building instructions can be downloaded here.  
Big credits to Chris. 

Apr 11, 2021
Category: General
Posted by: lex

My previous 1206 Attenuator design was a horror story because there where 2 big flaws in it. 
Fixed those, ordered a "small" batch, which came in last Saturday. Build two for testing.
Now they seem to work up to 1.2GHz (good enough for the hobby).  
Continue reading. . . . 

Mar 30, 2021
Category: General
Posted by: lex

For those who are in need of a FRG-7 main dial knob and have a 3D printer, today I took the knob of my Frog and started drawing.

read more . . . 

Mar 23, 2021
Category: General
Posted by: lex

The PCB's have arrived and I assembled one for one of my FRG's   Read more . . .  

Mar 12, 2021
Category: General
Posted by: lex

I don't have a webshop and don't run a company. But when your interested in products I made, or you are looking for special parts which I use in my experiments, parts from restoration projects etc, fill in this new email form I added to my website.  

Feb 25, 2021
Category: General
Posted by: lex

I finished the design of the Crystal Measuring Adapter (CMA) for NanoVNA  and will be making a limited amout of kit available from the left over parts.

KIt contains : PCB with the 4 SMD load resistors pre-soldered and 2 SMD 0 ohm resistors for the attenuator sections (0dB), 2 SMA female SMA edge connectors,  2 FT37-43 toroid, 1.2m 0.4mm lacker wire, HC49 crystal socket for crystal under test,  16 pin header strip,  3 jumpters, 3D printed plate with 6 pins, 2 3D printed T37 holders. 

Check out : kit for-sale page

 

Feb 13, 2021
Category: General
Posted by: lex

Sssst don't tel any one, but I'm working on a new NanoVNA adapter, check it out on this page.

Jan 25, 2021
Category: General
Posted by: lex

Got some new toys to play with. The all new Raspberry PI PICO. 

Continue reading. 

Jan 18, 2021
Category: General
Posted by: lex

When I got my hands on a used NanoVNA H4 I couldn't resist looking inside to see if it was using shielding for the RF components. Turned out it did so I bought the right one. But one thing I noticed was the component silkscreen for a micro SD-card slot without the slot it self and because it still contained the original software which didn't mention anything about saving images to SD cards, I didn't do anything with it.  

Until now . . . (continue reading)