Darn! Forgot the URL! http://www.ka7oei.com/syn_blank.html
73, Roger On 1/20/2020 10:43 AM, Tim Shoppa wrote:
My horrible utility line noise (which afflicted me in ARRL 160) continues and I'm looking to operate in the CQ 160 test this weekend and not be an alligator. I've located the offending pole but lack any way of getting it fixed on such short notice. In a quiet non-contest topband session, my rig's noise blanker does a very decent job eliminating the 120Hz impulses. I have to operate many kc away from any loud locals but it's effective. In a low-power contest like NAQP SSB the rigs noise blanker is still useful although not a cure-all. But in a 160 contest with a huge density of loud local signals, the rigs noise blanker's action just mixes all the super-loud dense signals together and isn't really effective anymore. I read in N2NC's NCJ article, about the powerful technique of using a SDR with Linrad configured to not apply the noise blanker to the loud signals. He goes on to say "The Linrad noise blanker, combined with the 768kHz bandwidth of the Airspy HF+, has been a big plus when the noise pops up. It makes the noise a non-issue, and I notice no distortion, even on a band packed with strong signals". N2NC's article here: https://ncjweb.com/bonus-content/N2NC-Linrad/N2NC-Linrad-Main.pdf Can any topbanders familiar with Linrad, please give me some hints on this configuration? Either on this list or by E-mail to me. Tim N3QE [email protected] _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
