Search found 206 matches
- Sat Aug 18, 2018 6:22 am
- Forum: SDR Antennas
- Topic: Mains noise
- Replies: 13
- Views: 49393
Re: Mains noise
Hi guys, I've temporarily (I hope) injured my left eye after my eyeball was stuck by a small burning ember, I'm out of action for the mean time, apologies.
- Sun Aug 12, 2018 7:41 am
- Forum: SDR Antennas
- Topic: Mains noise
- Replies: 13
- Views: 49393
Re: Mains noise
Hi again. Sorry about the large graphics in the previous post caused by my screen grabs being 144 dpi. I forget to resample them. Likewise forgive the delays between posts. OK. There here are three obvious parts of the mains interference problem to think about ranked in probable ease of doing someth...
- Tue Aug 07, 2018 1:25 am
- Forum: SDR Antennas
- Topic: Mains noise
- Replies: 13
- Views: 49393
Re: Mains noise
Hi guys and thanks for the comments! Instalment number two of this breathtaking thread is at hand. We can't look towards "what we can do about it" until we sus out more of the problems and then visualise a possible goal we might work towards. So here goes with that. We are our own worst enemies beca...
- Thu Aug 02, 2018 5:50 am
- Forum: SDR Antennas
- Topic: Mains noise
- Replies: 13
- Views: 49393
Mains noise
There are excellent discussions already happening with excellent input from a number of people about electrical noise. In my own location I have determined by experimenting over a year or three that most of my unwanted interference is mains borne and is conveyed to me by a) being radiated from mains...
- Sun Jul 08, 2018 2:31 am
- Forum: General
- Topic: Testing RSPduo receiver sensitivity with noise generator
- Replies: 51
- Views: 153284
Re: Testing RSPduo receiver sensitivity with noise generator
Yesterday I received a brand new Rig Expert's AA-30.ZERO Vector Impedance Anayser. Hello Gianfranco, what a thrill! That will keep your imagination and fingers occupied for quite some time to come! As mentioned in my message we lost internet for nearly two and a half days, we depend on a fixed-wire...
- Tue Jul 03, 2018 11:42 pm
- Forum: General
- Topic: Testing RSPduo receiver sensitivity with noise generator
- Replies: 51
- Views: 153284
Re: Testing RSPduo receiver sensitivity with noise generator
Dear Gianfranco, so sorry I missed your message, I don't log in unless I wish to post and so it remained invisible, please accept my apologies for that. Your chart above is an interesting view of the data, well done. Great to hear that signals are good too, despite what are at the moment very poor b...
- Mon Jul 02, 2018 12:02 am
- Forum: General
- Topic: Testing RSPduo receiver sensitivity with noise generator
- Replies: 51
- Views: 153284
Re: Testing RSPduo receiver sensitivity with noise generator
Hi Gianfranco, The results are too good to be true I felt vicarious pleasure being to be able to copy and paste that happy comment! Regarding the last table of results I posted that you have asked me to check, the significant difference would likely be feeding it from the bottom directly against gro...
- Sun Jul 01, 2018 7:38 am
- Forum: General
- Topic: Testing RSPduo receiver sensitivity with noise generator
- Replies: 51
- Views: 153284
Re: Testing RSPduo receiver sensitivity with noise generator
Great pics, Gianfranco, lovely day for you and us, beautiful winter sun all day. We have our house on the market and today was an inspection which kept us busy in preparation. BTW it was good of you to put out that extra couple of chairs for us, sorry we couldn't make it. We are settling in to a nic...
- Sat Jun 30, 2018 8:36 am
- Forum: General
- Topic: Testing RSPduo receiver sensitivity with noise generator
- Replies: 51
- Views: 153284
Re: Testing RSPduo receiver sensitivity with noise generator
Here is the 2-14MHz table
- Sat Jun 30, 2018 8:24 am
- Forum: General
- Topic: Testing RSPduo receiver sensitivity with noise generator
- Replies: 51
- Views: 153284
Re: Testing RSPduo receiver sensitivity with noise generator
Hello again Gianfranco, I'm not like the soothsayer in Antony & Cleopatra "In nature's infinite book of secrecy, a little I can read", the reality is I'm like the blind theologian looking in a dark room for a black cat which is not there. The problem is my conceit and impatience sometimes makes me t...