Spikes in 6 Mtr Ham Band

AussieLand
Posts: 16
Joined: Thu Nov 03, 2022 8:13 am

Spikes in 6 Mtr Ham Band

#1

Unread post by AussieLand »

What are the spikes I can see tonight in the 6 Mtr ham band? Is it noise or harmonics of some frequency?

It looks like harmonics to me
Screenshot-2022-11-06-182038.jpeg
John. VK4JRH

Max
Posts: 859
Joined: Thu Aug 13, 2020 9:47 am

Re: Spikes in 6 Mtr Ham Band

#2

Unread post by Max »

AussieLand wrote: Sun Nov 06, 2022 8:36 am What are the spikes I can see tonight in the 6 Mtr ham band? Is it noise or harmonics of some frequency?

It looks like harmonics to me

Screenshot-2022-11-06-182038.jpeg
These sort of spikes are often generated by a local switched mode PSU, UPS, solar inverters, LED lights and their associated PSUs, you name it. 100 kHz spikes so I would say quite likely. Check own home first. If possible turn off all AC power then run SDR on laptop. See what you see then. Admittedly 50MHz is quite high to see this sort of thing in my experience. Others on here may differ in that opinion?

Max

AussieLand
Posts: 16
Joined: Thu Nov 03, 2022 8:13 am

Re: Spikes in 6 Mtr Ham Band

#3

Unread post by AussieLand »

Thanks Max.
John. VK4JRH

Post Reply