Frog Sounds - Spurious emissions

I've checked this extremly simple concept for spurious emissions and whether they're compliant with the current regulations ...

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Kategorie: QRP

Zuletzt aktualisiert: 19. März 2017

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Frog sounds - The frog has arrived

Yesterday I've build the FROG SOUNDS 40m CW QRP transceiver.

I've ordered it as a kit from eBay Seller for about €10,- inclusive shipping to DL. The kit arrived well packed after about 15 days in my postbox.

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Kategorie: QRP

Zuletzt aktualisiert: 19. März 2017

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Frog sounds - How far can you hear a frog croak?

Currently I've done 6 QSOs with the Frog and my dipole antenna.

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Kategorie: QRP

Zuletzt aktualisiert: 19. März 2017

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Frog Sounds - Enhancements to the Frog

In 2015 I've build the Frog Sounds QRP transceiver.

This little transceiver still needs improvement:

1. The output is still only 400mW
2. The key-click is horrible - even with the additional audio cw-filter.
3. The suppresion of harmonics is very bad. Check below.

If someone has any ideas how to fix this, please Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein!.

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Kategorie: QRP

Zuletzt aktualisiert: 19. März 2017

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Miss Mosquita - a new girl in town

Since last weekend a new QRP transceiver joined my shack I bought her used from a German HAM via the QRPFORUM community. The transceiver is one of the older projects from the DL-QRP-AG but still a neat little transceiver. It is still offered in kit-form from QRP-Project in Berlin.

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Kategorie: QRP

Zuletzt aktualisiert: 19. März 2017

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WSPR live data

  Live data from my WSPR feed

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Kategorie: WSPR

Zuletzt aktualisiert: 04. März 2017

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WSPR some data

Here some analysis of my recorded spots data with my spot data collector. As of today there are 45.000 spots recorded in my database.

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Kategorie: WSPR

Zuletzt aktualisiert: 01. März 2017

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RF detectors

I've done some measurements on two RF detectors - one on an older diode detector from ELDITEST and another one on an AD8307 based one from SV1AFN.

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Kategorie: Measuring Technology

Zuletzt aktualisiert: 10. Februar 2017

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WSPR first data analysis

My WSPR data collector is now running some days and I started with some basic data analysis.

The power on the bands 60m to 20m is about 100mW!

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Kategorie: WSPR

Zuletzt aktualisiert: 09. Februar 2017

Weiterlesen: WSPR first data analysis