160M: The Inverted “Fishing Hook”

My antenna now looks like some weird Inverted J or Inverted Fishing Hook (?). Its similar to the “AKI Special” antenna documented on page 9-72 of the ON4UN Lowband DXing Book. It is now 60′ tall at its apex, and then the wire trailing down skirts the very large Blue Spruce that its top wire is pulled up to. A year ago, the Diablo…

The RFI “Sleuth”

In the last year I made two changes to my antenna farm that introduced RFI issues. Not RFI in the shack, but RFI that I am causing that: Only on 160M I all of a sudden cause my Trane Heater blower to turn on and off for short periods – just enough to blow cold air through the house and make fan noise Turn…

High Pass “Tee” Network

The new KY6R Inverted L matching unit at the base of the antenna. It is the Palstar AT5K High Pass “Tee” circuit, and being at the base – while the extra capacitor might introduce some loss, having the unit at the base of the antenna most likely makes up for that. Larry Benko, W0QE, in his FB antenna coupler slide deck: http://www.w0qe.com/Papers/Antenna_Tuners.pdf On page…

Palstar AT5K Equivalent at the Base of my Inverted L

I have all of the Palstar components now in this T configuration at the base of my Inverted L, and it did have the characteristic of a T tuner, which is the three controls reach a sharp V as far as where the SWR goes low. This was my previous circuit, and it caused core saturation in my 5KW Balun Designs 1:1 Current Choke….

Matching 160M: The Challenge Continues

All of a sudden, in a CW pileup this morning, my amplifier kept faulting – the SWR started creeping up. Since I have all of the components to make the same T circuit as a Palstar AT5K, I might try this. I have the space in the cabinet and its an easy task, so I will try to get this done after work tonight….

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

Dios de los Muertos

Yesterday we had the best Halloween party at Credit Karma. I felt like a kid again – kudos to our wonderful Events Team – they knocked the ball out of the park!. What an amazing company to work for – I’ve been at CK for 8 months and just love it. The Inverted L with home brewed remote tuner at the base has a…

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…

160M: CQ WW Bust and Busted

From Page 6-8 of the ARRL ON4UN LOwband DX-ing Book Today I will nail the new LC circuit for the Inverted L. There are 14 combinations that I can try, so it could take a couple hours to finalize the LC circuit, wire up the u.RAT and button it all up. The ones that have one L and one C in the diagram above…

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 consoleĀ  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…