I'm rather surprised that you did not see the improvement to the HF performance that the upgrade kit makes to the original VLF/HF amplifier. It may be worth trying the antenna again but in a slightly

It looks like something with a switch mode power supply nearby. Try running your PC on it's internal battery if it's a laptop. Try disconnecting and chargers or other power supplies to see if the nois

You will see a difference on HF after you have done the upgrade. The reason that the any loop used with the Loop Antenna Amplifier is directional and has deep nulls is because the common mode noise an

I've been surprised at the amount of advice and help following my post on the Topband contesting email reflector. I've had several direct emails with advice too. What I'm proposing to manufacture is a

Looking at the latest news it's likely that the UK will go into a form of self-isolation to reduce the spread of the coronavirus (COVID19) in about 10 to 14 days. All of us here are in the "at risk" c

Regarding preparing a drawing it's probably going to be quicker if I take photographs of one of the test loops in the workshop tomorrow. I'll post the photos tomorrow. Regards, Chris

Russ, I'm in the early stages of planning a YouTube video about loop design including the shielded loop and the Mobius loop. I want to make detailed measurements of signal to noise performance to comp

OK, thanks for letting me know. I've changed the settings on Queen Nanu's account to moderated so that I can check on any future posts. If genuine I'll allow them on the forum. Regards, Chris

We recently updated the HF Rreselector to use varactor diodes as the variable capacitor we originally used went out of production. It uses four varactor diodes in a bridge arrangement to cancel out an

QueenNanu, You can always look at our HF Preselector: http://www.crosscountrywireless.net/preselector.htm Regards, Chris

Hi Adam, I've just searched my email and I've received nothing from you recently. I'm not sure what is blocking them. Try sending an email to the Proton Mail address in my email signature. Regards, Ch

Mark, Good to hear the antenna and Multicoupler are working well for you. We are just finishing a large batch of Multicouplers so we can take your order. If you order each item individually I'll refun

Hi Guy, We shipped a kit out to you by letter post but quite a few have gone missing. I'll send another one today as a small parcel in a padded bag. Regards, Chris

The Loop Antenna Amplifier is to be reviewed in the Radio User magazine. They have also posted a preview on the Radio Enthusiast web site that covers Radio User and Practical Wireless magazines. https

When I designed the Loop Antenna Amplifier it was intended to compete with the MLA-30 loop antenna on price. To keep the cost down while still keeping the polycarbonate outdoor enclosure I decided to

If you are using a shielded loop then the Loop Antenna Amplifier head unit PCB can be mounted in a shielded metal enclosure. The head unit has two separate grounds separated by a common mode filter. W

Hi Ed, The DC connector is a 2.1mm socket. The supplied connector will fit but it is a tight fit. Before dispatch it was tested with the cable supplied to confirm that both Preselector and cable were

Stephen, We have already sent two kits out to you by letter post. It's possible that they may have gone by surface mail to the United States. Can you confirm that your address hasn't changed as we are

Both the VLF/HF and HF/VHF versions can be powered directly from the SDRPlay bias-tee but as the choice of capacitors and inductors in the bias-tee were intended for GPS and L band use the frequency r

Hi John, Your antenna and power supply will be shipped Monday morning. I'll email the tracking number as soon as I have it. Regards, Chris -- Chris Moulding Cross Country Wireless Unit 24562, PO Box 4