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Dec 28, 2023

Upgrading the QO-100 setup : adding a line isolator

Category: General

Posted by: lex

Adding some safety to my UpCon6W from Amsat-DL. A WG2020X Isolator from RF-TyT to protect me from screwing things up.

Read more . . .

Jul 24, 2023

QRP-Labs QMX in the shack (and now finished)

Category: General

Posted by: lex

Today I received my QRP-Labs QMX. So I started building it and tried to document the build.

Continue reading . . . .

Apr 11, 2023

Free QRP-Labs broadcast band filter PCB's.

Category: General

Posted by: lex

Spring cleaning in my shack. While stocks last, I'm giving away sets of 2 old stock PCB's for my QRP-Labs broadcast band filter for postage cost only. Checkout: https://www.ph2lb.nl/blog/index.php?page=bc-filter and if you like it, fill in the webshop order form http://ph2lb.nl/webshop/order.php to get yours.

Mar 28, 2023

New K2 mods and articles.

Category: General

Posted by: lex

I have added new K2 mods and articles to this website . . . . (continue reading)

Jan 18, 2023

I'm now on HamShack Hotline.

Category: General

Posted by: lex

I'm now on HamShack Hotline 420-000-0225 (or the short number 84225)

Continue reading . . .

Dec 25, 2022

Measuring output power

Category: General

Posted by: lex

When you want to measure output power and don't have a power or dBm meter, but do have a oscilloscope and a 50 ohm load, you good to go.

Check out this page on which I describe how to do it.

Continue reading . . . .

Protect circuits from reversed voltage

Dec 4, 2015

Updates 4 dec

Category: General

Posted by: lex

Added a new walk to the Field reports page : 2015 November walks and 2 new project to the project page : Small portable HF PA and Digimode box

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