Anyone else have this rig? I started with the 705 and added this for my base. I have a question on 80m interference that I didnt see on my 705.
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Anyone else have this rig? I started with the 705 and added this for my base. I have a question on 80m interference that I didnt see on my 705.
Cross spectrum. Only happens on 80m, I never saw this on any band with the 705. I may connect the 705 again tonight to see if it's showing now.I have had one since before covid, what kind of interference are you getting? are you powering the radio from a different PSU? some switchers have RFI problems.
ETA: does the interference follow a pattern? like every X khz? sometimes you can use that to narrow down what might be causing it.
I literally took out my 705 and put in my new 7300. Same antenna. The 7300 is powered by the MFJ, the 705 was powered by the ICOM power supply that looks like it was for a laptop.So you A/B testing from same position vs 705 w same antenna? That pattern seems oddly regular intervals.
I literally took out my 705 and put in my new 7300. Same antenna. The 7300 is powered by the MFJ, the 705 was powered by the ICOM power supply that looks like it was for a laptop.
Mike, I wouldn't say it's regular intervals, but its frequent, I dont think I can go more than 5 seconds or so without seeing a full line of noise across the spectrum.
I've seen those once in a while, these fill the spectrum, shoot or sweep it was probably the wrong choice of words because I know what you're talking about.When you say "these shoot across the spectrum" do you mean like they sweep across? If they do, I think those are chirps used to test propagation. That doesn't explain why you'd see them on one radio and not another though, and only on 80m.
yesSo those spikes are on, then off?
Good to know. It has to be something in the house. It's odd I never saw it with the 705, I'll find out tonight when I swap them.I'm running my 7300 and other radios off the same power supply and have never seen anything like that.
Time intervals or frequency intervals?I literally took out my 705 and put in my new 7300. Same antenna. The 7300 is powered by the MFJ, the 705 was powered by the ICOM power supply that looks like it was for a laptop.
Mike, I wouldn't say it's regular intervals, but its frequent, I dont think I can go more than 5 seconds or so without seeing a full line of noise across the spectrum.
At least the noise is local which allows you to fix it. It's a different story if some a**h*** with cheap chinese pot grow lamps that leak RFI is two houses down from you and they don't care, lol.....still working on reducing the b.s. in the house for the 7300. I found out the nice little lap I have on my desk creates a lot of noise. It sucks because I liked it alot.
Still have some offenders but until the house is empty and I can cut the power it will take some time to square it all away.
Hopefully I dont find that. Its fine during the day on 80m. I was on it a lot today testing winlink. Something is happening at night.At least the noise is local which allows you to fix it. It's a different story if some a**h*** with cheap chinese pot grow lamps that leak RFI is two houses down from you and they don't care, lol.....
If its night it might be someones photocell operated lamp, etc.Hopefully I dont find that. Its fine during the day on 80m. I was on it a lot today testing winlink. Something is happening at night.
still working on reducing the b.s. in the house for the 7300. I found out the nice little lamp I have on my desk creates a lot of noise. It sucks because I liked it alot.
Still have some offenders but until the house is empty and I can cut the power it will take some time to square it all away.
Hook the radio up to your power pack and flip the breaker. Then you will know if it house related.Hopefully I dont find that. Its fine during the day on 80m. I was on it a lot today testing winlink. Something is happening at night.
@Admin not related to your noise issue, but what are you running for an antenna?
Cool, thank you. I have been considering their MPAS 2.0 kit as well.CHA EMCOMM III BASE
The EMCOMM III Base antenna, is an effective multi-band High Frequency (HF) antenna specially designed for short to long range base station HF communications. Due to configuration and installation flexibility and low visibility design, it is ideal for home use even in developments with a Home...chameleonantenna.com
11' off the ground, straight from the house out to my range.
Anyone else have this rig? I started with the 705 and added this for my base. I have a question on 80m interference that I didnt see on my 705.