amplifiers for loops

[ka3jjz]

If you try to use a passive loop (such as the newly-released YouLoop) and find that you need a signal boost, there are a few options, tho it will take some work, particularly in how to connect the amp to the loop and get power to it....

DIY Kit of Active Amplifier for Magnetic HF Antenna 3MHz-30MHz Hula Loop Shortwave Radio

Magnetic loop antenna has great performance for receiving weak AM/SSB radio signals in urban area where an regular beverage antenna is usually overloaded by industrial HF noise of modern city. Electrical circuit of this active antenna amplifier board is based on high impedance differential...

rhelectronics.net

W6LVP Magnetic Loop Antenna Experimenter’s Kit | W6LVP

www.w6lvp.com

Medium Aperture Loop Antenna ALA100LN N. Am.

Wellbrook Medium Aperture Active Loop Antenna Model ALA100LN.

www.loop-antennas.com

I have also seen at least one person using a loop on the ground (LoG) with the amp from the el cheapo MLA30.

Are there other options? Let's see them.....Mike

 

[prcguy]

I have a couple of really good high level HF preamps from Aiken Labs and Norlin Communications, commonly used in multicouplers for Govt listening stations (spooks). They work really well and are overload proof. I also got one of these to mate with a small shielded VLF/HF loop for direction finding and its working great for the price and the build quality is top notch. I requested the modified version that covers 30KHz to 30MHz.

2x J310 Push-Pull Low-noise HF pre-Amplifier (30 KHZ - 30 MHZ) Built & Tested

2x J310 Push-Pull Low-noise HF pre-Amplifier (30 KHZ - 30 MHZ) Built & Tested NEW 2022 VERSION UPGRATED WITH: BY-PASS RELAY (The pre-amp switches in-circuit as long there is DC feeding either from the Bias-T or from the DC input connector) BIAS-T throuh the output connector going to the receiver...

www.sv1afn.com

 

[ka3jjz]

Thanks, I'll add it to the list...Mike

 

[krokus]

DIY Kit of Active Amplifier for Magnetic HF Antenna 3MHz-30MHz Hula Loop Shortwave Radio

Magnetic loop antenna has great performance for receiving weak AM/SSB radio signals in urban area where an regular beverage antenna is usually overloaded by industrial HF noise of modern city. Electrical circuit of this active antenna amplifier board is based on high impedance differential...

rhelectronics.net

That looks really interesting, but the website is a bit scant on details. It seems like you have to select a range, but no details on which options are available. (Meaning which range combinations are available.)

 

[ka3jjz]

I saw that too, but for the price, it isn't bad for someone who wants to tinker. Not like you're going to lose a lot of money if something goes awry

Mike