[Elecraft] [K3] Using K3 for relative noise survey - followup

Thanks to all for the great suggestions (the SNR of the responses was appropriately high!). I did some experiments with the RSP2 and HDSDR. It was very close to what I was looking for and I will revisit it in the future when I am looking for specific interferers, but I set it aside when I saw a

Re: [Elecraft] [K3] Using K3 for relative noise survey

ct: Re: [Elecraft] [K3] Using K3 for relative noise survey They should fix some links on this site. On 8/4/2017 2:26 AM, David Cutter via Elecraft wrote: Apologies for taking this away from Elecraft topic, however, you might be interested in a specific noise measurem

Re: [Elecraft] [K3] Using K3 for relative noise survey

Yes, I already sent a message to Chris, hope he fixes that soon David G3UNA > > On 04 August 2017 at 17:45 Wes Stewart wrote: > > > They should fix some links on this site. > > On 8/4/2017 2:26 AM, David Cutter via Elecraft wrote: > > Apologies for

Re: [Elecraft] [K3] Using K3 for relative noise survey

They should fix some links on this site. On 8/4/2017 2:26 AM, David Cutter via Elecraft wrote: Apologies for taking this away from Elecraft topic, however, you might be interested in a specific noise measurement system here: http://www.crosscountrywireless.net/sentinel_2_sdr.htm in which a

Re: [Elecraft] [K3] Using K3 for relative noise survey

y, August 02, 2017 1:09 AM Subject: Re: [Elecraft] [K3] Using K3 for relative noise survey Rick, While it is not easy, you should put in the agenda checking it day and night. I found very different noise profiles that way Mel, K6KBE From: Rick Miller - N1RM <n...@arrl.net> To: el

Re: [Elecraft] [K3] Using K3 for relative noise survey

Just a warning: my buddy did a survey of his property (which did end up being a contesting site) and heard nothing. Turns out the high-tension lines about 1000' away were turned off for maintenance at the time. On Tue, 1 Aug 2017, Dave Cole wrote: Amen to that! Day and night are as different

Re: [Elecraft] [K3] Using K3 for relative noise survey

profiles that way Mel, K6KBE From: Rick Miller - N1RM <n...@arrl.net> To: elecraft@mailman.qth.net Sent: Tuesday, August 1, 2017 3:54 PM Subject: Re: [Elecraft] [K3] Using K3 for relative noise survey Thanks for all the info! It turns out I have an RSP2 and now have it r

Re: [Elecraft] [K3] Using K3 for relative noise survey

t] [K3] Using K3 for relative noise survey Thanks for all the info! It turns out I have an RSP2 and now have it running with HDSDR in "slow" waterfall mode.  I'm now looking for a way to control the front end options of the RSP2 - nothing seems to be built into HDSDR to do that, bu

Re: [Elecraft] [K3] Using K3 for relative noise survey

Thanks for all the info! It turns out I have an RSP2 and now have it running with HDSDR in "slow" waterfall mode. I'm now looking for a way to control the front end options of the RSP2 - nothing seems to be built into HDSDR to do that, but that's a topic for another mail list. BTW - I

Re: [Elecraft] [K3] Using K3 for relative noise survey

At the FCC website, you can search for registered communications towers within a radius of a location. https://www.fcc.gov/media/radio/asrn-within-radius There are 56 registered towers within 10 km of my house. wunder K6WRU Walter Underwood

Re: [Elecraft] [K3] Using K3 for relative noise survey

Thanks Jim. I live out in the country, at least 30 miles from any high power AM BC, so haven't had this issue or evaluated that important capability. The little FunCube Dongle Pro+ also has filtering, but I don't know how good it is. It covers only 192 kHz at a time, but is 16-bits, so has

Re: [Elecraft] [K3] Using K3 for relative noise survey

I have an RSP1 and it works well with the free software available to do spectrum work. I particularly like HDSDR's ability to make long term recordings. However I found it of limited use on 160m due to AMBC interference since it doesn't have much (or any?) front end filtering. I'm 30 miles north

Re: [Elecraft] [K3] Using K3 for relative noise survey

Dave's advice and techniques are excellent, and I've incorporated them into my talks and writing on chasing RFI. 73, Jim K9YC On 8/1/2017 9:18 AM, Dave Cole wrote: Might I suggest this: http://nk7z.net/sdr-rfi-survey-p1/ blog entry. It is a way of using a cheap SDR to get an overview of

Re: [Elecraft] [K3] Using K3 for relative noise survey

On 8/1/2017 6:33 AM, Rick Miller - N1RM wrote: I currently live in a townhouse and have made an offer on a few acres in a more rural area. I would like to measure the relative noise levels between the two locations to reduce the probability of surprises or disappointments should I close the

Re: [Elecraft] [K3] Using K3 for relative noise survey

I was going to recommend what Don says with a twist. (BTW, it's page 38 in the K3S manual) To get a normalized noise reading, terminate the RX antenna connector, select it and let the AFV value stabilize. Then select the normal antenna and the dBV display. This will display the ratio of

Re: [Elecraft] [K3] Using K3 for relative noise survey

On 08/01/2017 06:33 AM, Rick Miller - N1RM wrote: I currently live in a townhouse and have made an offer on a few acres in a more rural area. I would like to measure the relative noise levels between the two locations to reduce the probability of surprises or disappointments should I close the

Re: [Elecraft] [K3] Using K3 for relative noise survey

Wizkers:io or Wizkers:radio may already do that scanning that you want. I know you’ve written it in Python, but Ed may have worked out the kinks in the measurements. http://www.wizkers.io/buy-or-diy wunder K6WRU Walter Underwood CM87wj

Re: [Elecraft] [K3] Using K3 for relative noise survey

Dave, You can use the Alternate VFO B display of AFV to give better resolution than the S-meter. See page 36 of the K3 manual. You must have the CONFIG: TECH MODE turned on to show the AFV entry. If you want to see the difference between two values, there is also the DBV alternate VFO B

Re: [Elecraft] [K3] Using K3 for relative noise survey

Don’t forget to look for noise in vertical and horizontal polarity. Dave, K4TO > On Aug 1, 2017, at 9:33 AM, Rick Miller - N1RM wrote: > > I currently live in a townhouse and have made an offer on a few acres in a > more rural area. I would like to measure the relative noise

[Elecraft] [K3] Using K3 for relative noise survey

I currently live in a townhouse and have made an offer on a few acres in a more rural area. I would like to measure the relative noise levels between the two locations to reduce the probability of surprises or disappointments should I close the deal. I have gotten access to a very good battery