Tasty » Adam Sampson's hf bookmarks

Pappradio edit / delete

A prebuilt Softrock-like HF SDR. Looks like it's mostly SMT.

to electronics hf radio sdr ... on 18 April 2011

GM3WOJ contents page edit / delete

Interesting bits on building amplifiers, and how to properly maintain crank-up antenna towers (it's remarkably complicated).

to amateur amp electronics hf mechanica radio retrotech rf ... on 11 April 2011

The Easy Way edit / delete

Why high SWR and feedline radiation isn't necessarily a bad thing (because it doesn't actually cause much loss in practice, and it lets you tune the antenna from the transmitter end).

to antenna ham hf radio ... on 28 January 2011

Digital Modes Samples edit / delete

Audio-only, but a good overview of commercial stuff.

to digimodes hf radio vhf ... on 27 January 2011

G7POS edit / delete

Converting CB radios for use on various amateur bands (not just 10m -- he walks through a conversion for 4m!).

to amateur cb electronics hf radio vhf ... on 23 January 2011

30 watt IRF510 Power Amplifier for five HF bands, by ON6MU edit / delete

30W with a single IRF510 (and otherwise all bits I have in store, I think).

to amplifier electronics hf linear radio ... on 11 January 2011

TAPR - HPSDR PennyWhistle edit / delete

I'd forgotten about this kit -- or, rather, not realised how easy it is to drive from something other than the HPSDR hardware. Hohum.

to amplifier ham hf linear radio ... on 05 January 2011

THIECOM | edit / delete

Cheap portable HF antennas (notably the D-Original Outback 1899/2000).

to antenna hf radio shopping ... on 15 November 2010

VOACAP Quick Guide: HF Propagation Prediction and Ionospheric Communications Analysis edit / delete

The Google Maps-based predictor is pretty cute: it'll give you a nice chart showing which frequencies should work well between two points throughout the day.

to hf propagation radio ... on 04 November 2010

High Frequency Beacon Society edit / delete

Pirate beacons. Obviously.

to beacon hf obviously pirate ... on 30 October 2010