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Take a look at: https://www.fcc.gov/general/oet-bulletins-line Go down to OET Bulletin No. 65 (August 1997) On March 8, 2023, there are 3 pdfs that offer some guidance.

The SDRplay RSP has a very accurate signal level meter, a fairly accurate 50 ohm input impedance, requires a fairly modest laptop and will allow one to make near lab grade measurements on the

The Tecsun PL365 has a very linear dBuV meter function on the input. The antenna factor on 477kHz is 40dB on the internal ferrite loop and 20dB on the external loop stick. I am in the process of

A field strength meter is typically uncalibrated. It is simple a meter, usually in the 10's of microamperes, a high frequency diode to rectify the RF energy, a potentiometer to adjust the DC current

My apologies - I meant to say 7000 kHz to 19000 kHz, basically 17 meter through 40 meter bands.

I am curious, which FCC regulation can authorize transmitting in that range? 73, Mike AF7KR

And, I am transmitting in the 7 kHz to 19 kHz range.

Does anyone have a recommendation for affordable field strength meters?? Something under $150 preferably (if that exists). I am using a magnetic loop to transmit data and I am wanting to double

In the mean time Bill, check for the usual things like loose coax and power supply connections, and try and measure how much current the loop is drawing. The MFJ-1886 has built in protection diodes,

I sure will. It took about three weeks from the time I paid for it to ship but it's estimated to be here by the 13th. I'm still deciding where I'll mount it, though I may just keep it on a temporary

Hey, Dominic, can you please report back and let us know your impression of it? It will be great to hear your opinion of it. Thank you.

Owen, I just got notification yesterday that my V4 loop has shipped. I’m excited to compare it against my MFJ-1886 and W6LVP loops. I use MLA-30+ antennas for experimentation, mostly- not as my main

Good morning Tom, Thank you so much for the offer to help me diagnose my loop's issue/s. I would like to take you up on your offer. I live in Woodstock, so I could easily take it down and drive your

Its very unlikely that a small FM transmitter had anything to do with damage to the Loop. I'd look for another cause. One possibility is static electricity in a dry shed?

Where are you located William? I am in Cambridge. Maybe I can help. Tom

Thanks for allowing me to join this Loop Antennas ‘group’. I am a newbie so please be kind. I have listened to shortwave radio for over 60 years and since I have retired I have renewed my interest

Hi, I've decided to make the investment in a better loop antenna to the MLA30+ that I have and am night really impressed with. I notice that in addition to the loop amplifier++ that they have offered

Or Cat5e ( external use, solid copper not cheap crap) with common mode chokes fitted..ala LZ1AQ ( what i use, what a difference they make!!!) If done properly, turn preamp off zero pickup, (

Roger, You can get better results using a FT240-75 toroid with 25 turns of RG316 coax. Everett Sent from the all new AOL app for iOS

IIRC Dallas liked twisted pair because he found it has less noise pickup than coax. Roger