Folks, If you have one of these:
G6LVB FCD http://www.funcubedongle.com/ You really ought to consider getting one of these: G0MRF Signal Generator http://shop.amsat.org.uk/shop/article_6/2.4-GHz-Signal-Source-Kits-by-G0MRF.html?shop_param=cid%3D8%26aid%3D6%26 (with some more details here: http://g0mrf.com/source2.htm ) I have a signal source board from back in the AO-40 era with a crystal at 96.019 MHz. It has proven very helpful as a continuos test signal source for a wide range of frequencies for the FCD. Beats ker-chunking local repeaters :) You can adjust various FCD parameters and see the impact, etc. The current crystal (96.013 MHz) is just a bit different than mine (96.019), but it would do the same thing... Harmonically, it works out like this: *note--if you have an antenna connected, keep in mind that fundamental frequency is probably right near a STRONG local FM radio station ;) so the noise floor might be quite high at 96.019 MHz! That one took me a while to figure out... Xtal Multiplier Output in MHz 96.019 0.667 64.013 96.019 1.000 96.019 96.019 2.000 192.038 96.019 3.000 288.057 96.019 4.000 384.076 96.019 5.000 480.095 96.019 6.000 576.114 96.019 7.000 672.133 96.019 8.000 768.152 96.019 9.000 864.171 96.019 10.000 960.190 96.019 11.000 1056.209 96.019 12.000 1152.228 96.019 13.000 1248.247 96.019 14.000 1344.266 96.019 15.000 1440.285 96.019 16.000 1536.304 96.019 17.000 1632.323 96.019 18.000 1728.342 96.019 19.000 1824.361 96.019 20.000 1920.380 96.019 21.000 2016.399 96.019 22.000 2112.418 96.019 23.000 2208.437 96.019 24.000 2304.456 96.019 25.000 2400.475 96.019 26.000 2496.494 73, Mark L. Hammond [N8MH] _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
