| 70cm band circulator Valvo 2722 162 05381 Y700/V-1-7/16 retuned from 590-720 MHz to 435 MHz - DD1US |
| 70cm band circulator Valvo 2722 162 05381 Y700/V-1-7/16 retuned from 590-720 MHz to 435 MHz - DD1US http://www.dd1us.de/Downloads/70cm%20band%20circulator%20valvo%20retuned%20from%20TV%20band%20rev1.pdf |