| Frequency Doubler 3,2 – 6, 4 GHz to 6,2 – 12, 8 GHz based on HMC204MS - DD1US Update |
| Frequency Doubler 3,2 – 6, 4 GHz to 6,2 – 12, 8 GHz based on HMC204MS - DD1US http://www.dd1us.de/Downloads/Frequency%20Doubler%20based%20on%20HMC204MS%20rev3.pdf |