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Re: So the box Agghhhh!!!

Nothing quite like adding the entire post to the subject line to upset the web interface.

By Paul · #8636 ·

Re: Which wire...

Hi Chris, Thanks, it happens rarely but i'll keep an eye on it and change it iff needed. Regards, Arend

By Arend · #8635 ·

Just my 2p worth but I would have had a longer, maybe fibreglass stub mast, on top of the rotator to support the loop and would also want the rotator much further away from the Yagi, or is it a

By Tom Crosbie G6PZZ · #8634 ·

Re: So the box shouldn't be at the bottom? I installed it this way because I understand the feed point at the bottom or the top it's horizontal polarization. If it's at the side it's vertical with loop antennas? I experimented before mounting it and found it noisier with the box at the side. This replaced an MLA30 that had amp at the bottom.

The discussion about breather holes and position of the box was about the Loop Antenna Amplifier ++. The HF Active Loop Antenna V4 has a different arrangement with two breather holes which allow more

By Chris Moulding · #8633 ·

So the box shouldn't be at the bottom? I installed it this way because I understand the feed point at the bottom or the top it's horizontal polarization. If it's at the side it's vertical with loop antennas? I experimented before mounting it and found it noisier with the box at the side. This replaced an MLA30 that had amp at the bottom.

By carinstaller@... · #8632 ·

Re: Which wire...

Hi Arend, Thanks for sending the photograph. I've just one observation. On the LAA++ enclosure next to the BNC connector is a small 1.5 mm breather hole. Usually the box is mounted with the coax

By Chris Moulding · #8631 ·

Re: Which wire...

Hi Chris and Tom, So this is how i did it and it works fine. I know it's not an ideal place but a small balcony is all i have but it is what it is. Regards, Arend

By Arend · #8630 ·

Re: Which wire...

It may not be obvious to everyone that its important to disconnect the loop from the original Wellbrook amplifier too.

By Tom Seeger · #8629 ·

Re: Which wire...

Hi Arend, The stainless steel suds on the LAA++ need to connect to the ends of the Wellbrook aluminium loop. If it's possible to remove the original amplifier and use the shortest possible wires to

By Chris Moulding · #8628 ·

Re: Which wire...

Hai Chris, Yes, that's right. The Wellbrook amplifier didn't work anymore so i want to replace it with a LAA++ Regards, Arend

By Arend · #8627 ·

Re: Which wire...

Hi Arend, I'm not sure what you are trying to do with the Wellbrook loop and the LAA++. Are you trying to replace the amplifier on the Wellbrook loop with a LAA++? Regards, Chris

By Chris Moulding · #8626 ·

Which wire...

Hello, I have a wellbrook loop and a LAA++. Which wire would be the best to connect these two? Regards, Arend

By Arend · #8625 ·

Re: Filtered V4 version amplifier now available in L=oop Antenna Amplifier ++

Thanks Mike. PM sent. Regards, Chris

By Chris Moulding · #8624 ·

Re: Filtered V4 version amplifier now available in L=oop Antenna Amplifier ++

Hi Chris, Sent your an email. I would like to order one of the v4 kits Many thanks, Mike

By Mike · #8623 ·

Re: VLF/LF/HF Antenna Amplifier prototype test

Hi David, I would expect a couple of weeks to design a new PCB, get a batch made and enclosure labels printed. Regards, Chris

By Chris Moulding · #8622 ·

Re: VLF/LF/HF Antenna Amplifier prototype test

Chris, This is excellent news - a long-awaited return to your catalogue, especially for LF/MF monitors. Any idea how long it will be before the antenna is in production? 73, David, GM8XBZ

By david · #8621 ·

Re: VLF/LF/HF Antenna Amplifier prototype test

So far the new VLF/LF/HF design is slightly better in sensitivity, noise rejection and IP2 performance than the High Z. It's only a dB or so here and there but I like to improve designs. The High Z

By Chris Moulding · #8620 ·

Re: VLF/LF/HF Antenna Amplifier prototype test

This is interesting, especially for us NDB chasers. How is this different than using your High-Z amplifier and the same short vertical and ground rod?

By Tom Seeger · #8619 ·

VLF/LF/HF Antenna Amplifier prototype test

I've just been running some tests on a prototype VLF/LF/HF Antenna Amplifier. This is based on the VLF/LF/HF Active Vertical Antenna we used to make before Covid lockdown. The amplifier will be housed

By Chris Moulding · #8618 ·

Alternative versions of the Loop Antenna Amplifier ++.

This week we have just completed the largest batch of Loop Antenna Amplifier ++ and Bias Tee Unit PCBs. Having such a large stock on hand allows us to offer another alternative version of the Loop

By Chris Moulding · #8617 ·

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