Best 160M RX Solution Yet . . .

Phasing two active loops through the DX Engineering NCC-2 is a great Top Band RX solution for those who live on small lots in the suburbs. My “previous best” solution was using the DX Engineering DV-40-P 40M phased array as a 160M RX antenna, but in the “both” mode, there was no directivity that I could tell. By having two active loops on rotators…

Mission Accomplished!

The switched transformer Inverted L matching circuit works as designed. The biggest take away is that now I can run full power on 80M, which was the biggest challenge. This morning I woke up, came out to the shack and did one last test and found that the 160M position was not isolated when I was switched in position 1 and 2 – so…

KY6R Inverted L Switched Transformer Match

I’m very pleased to have it all wired and working. My original plans did have a logic – wiring bug – the first relay really needed to be in a default NC mode (no power), and I needed a third voltage line to activate it to be in the 1:1 current choke – or direct feed to antenna mode. I tried to get away…

Two Great Lowband Antennas

If you have a good radial field, it’s hard to beat an Inverted L on a small lot. It’s easy to match it on 160M and 80. If you don’t have radials, the Mod Bob is a great way to get on all low bands on a small lot The Mod Bob requires a good balanced tuner like the Palstar BT1500A

New Low Band Antenna

It took a lot longer than I expected, but after trying many LC circuit combinations, and I can make the SPE Amplifier happy on 160, 80 and 75M. Trying to add in 40 and 30M were possible, but by adding in more components and thus causing some loss – which is silly since the DX Engineering DV-40-P works much better on 40M and even…

Urat and inverted l

I now have the antenna in this configuration (128 feet total length), and also have the u.RAT ready to be set into it’s waterproof box and wired up. The fancy schmancy u.RAT control console  Because I have a shorter antenna with the far end up off the ground, 160 tunes well, but 80M now tunes at a 3:1, so I will probably have to…

The Lowly Inverted L (Thanks Andreas, N6NU)

My friend Andreas, N6NU has been kind enough to “peer review” my meanderings through LowBandVille. After yesterdays discovery that I can get 160 and 80M to work very well with the Inverted U, Andreas suggested that I only bring the far end of the “bent over” Inverted L so that it is 15 – 20′ above ground. Since the Inverted U was too long,…

The u.RAT Rides Again!

The u.RAT will be put into service – now that I have switched to the Grounded Loop / Inverted U low band antenna On the left, the Spiderbeam aluminum mast used as a vertical – with Alumox between each joint, plus two hex head socket bolts and the clamps that came with the mast. On the right – 41′ of DX Engineering aluminum –…

High Pass T Circuit

High Pass “T” Coupler Circuit from http://www.w0qe.com/Papers/Antenna_Tuners.pdf Trying to get 4 bands 160 – 30M (and maybe even 20M as a bonus) is tricky with a 2 component L circuit, so I will follow Larry, W0QE’s lead and start with a High Pass “T” circuit – which gives great range at the sacrifice of a little loss. I plan on trying to find one position…

Steps to the Son of Mod Bob . . .

I have three aluminum elements up for the Mod Bob and will take down the center element: I already have a coax cable running from the Array Solutions switch you see to the left that goes all the way to that far element. The outside elements have the wire attached and it comes down to the center via a cool resin plastic (DXE) guy…