[TangerineSDR] [EXTERNAL] Re: Testing magnetometer with nearby RF

[Bill Engelke]

Tom - I am able to listen across a wide variety of frequencies - I can try that - though, I am a bit fuzzy on what to listen for - I can try turning the device on and off and observe the waterfall on the Flex and see if anything shows up, at least in the ham bands - any other suggestions?    - tnx es 73- Bill

From: TangerineSDR <tangerinesdr-bounces at lists.tapr.org> On Behalf Of Tom McDermott via TangerineSDR
Sent: Tuesday, May 25, 2021 12:48 PM
To: TAPR TangerineSDR Modular Software Defined Radio <tangerinesdr at lists.tapr.org>
Cc: Tom McDermott <tom.n5eg at gmail.com>
Subject: [EXTERNAL] Re: [TangerineSDR] Testing magnetometer with nearby RF

HI BIll - encouraging news from a susceptibility perspective !

The other concern would be noise radiated by the magnetometer, cabling, and activity.
Do you have the capability to listen on HF to see if the magnetometer causes noise when
you make readings?

-- Tom, N5EG

On Tue, May 25, 2021 at 9:02 AM Bill Engelke via TangerineSDR <tangerinesdr at lists.tapr.org<mailto:tangerinesdr at lists.tapr.org>> wrote:
I have a TAPR magnetometer in the ground (sitting at 24" deep).

I have tested for RF exposure as follows:

80 M dipole, about 20' away and 15' elevation,  1500 W on 80M
30 M vertical, about 60' away  200W (legal limit) on 30M
40 M double bazooka about 50' away and at 30' elevation, 1500 W on 40M
DX Engineering hexbeam, on 50' tower, base of which is 70' away, 1500 W on 20M, 17M, 15M, 12M, 10M
4-element 6 meter beam on 50' tower which is about 70' away, 500 W on 6 M

There was no discernable effect on magnetometer readings from any of these tests, which were a carrier for 10 seconds at the noted power level.

If anyone has ideas for additional tests, please advise; based on the above, my impression is that the current magnetometer should produce good results when in the yard of typical ham installation.

-73-  Bill,   AB4EJ

Magnetometer installation:


[cid:image001.png at 01D75181.1E173F30]
--
TangerineSDR mailing list
TangerineSDR at lists.tapr.org<mailto:TangerineSDR at lists.tapr.org>
http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org<https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.tapr.org%2Fmailman%2Flistinfo%2Ftangerinesdr_lists.tapr.org&data=04%7C01%7Cbill.engelke%40ua.edu%7Cd4f03dfc78fd412dbeee08d91fa57bf8%7C2a00728ef0d040b4a4e8ce433f3fbca7%7C0%7C0%7C637575617899258088%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=69ajP9qHyHHUAb52lpONGjjCx9umScykHs%2BIWyJjs4Y%3D&reserved=0>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.tapr.org/pipermail/tangerinesdr_lists.tapr.org/attachments/20210525/b19b59da/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 580394 bytes
Desc: image001.png
URL: <http://lists.tapr.org/pipermail/tangerinesdr_lists.tapr.org/attachments/20210525/b19b59da/attachment-0001.png>