Great! I like the spark gap and the 33K static drain much better between the antenna and ground, that between the antenna and radials as in your first post! I was thinking of sending you a note to that effect, but you saved me the trouble, Mike!
I expect that your capacitor matching network tunes rather nicely! 73, Charlie, K4OTV -----Original Message----- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Mike Waters Sent: Tuesday, September 17, 2013 5:51 PM To: W2RU - Bud Hippisley; topband Subject: Re: Topband: Hairpin Matching Coil Questions Ok, I found the photos, and I see that I need to take new ones of the present arrangement. But here's the capacitor values in the L network. - Between the 75 ohm coax center cond. and antenna: 350 pF variable, padded with a 200 pF fixed. - Between the antenna and the junction of the radials and coax shield, 430 pF variable. I used what I had available, and I forget where the capacitors are actually set. I think the radials are 132' long. The inverted L is 155' total, about 55' is actually vertical. The rest slopes down to the end insulator and counterweight through a pulley, to allow for the trees swaying in the wind. Correction to the last post: the spark gap and 33K parallel static drain resistor is between the antenna and ground, not between the antenna and coax shield/radials. I thought I had photos of all that, but I couldn't find them today. Hope this helps. 73, Mike www.w0btu.com On Tue, Sep 17, 2013 at 12:43 PM, W2RU - Bud Hippisley <w...@frontiernet.net > wrote: > > On Sep 17, 2013, at 1:23 58PM, Mike Waters <mikew...@gmail.com> wrote: > > > I've got some more photos and a schematic with capacitor values here, if > > anyone is interested. > > Sure! I'l like to see what works for your inverted-L. > > thanks! > > Bud, W2RU > > _________________ Topband Reflector _________________ Topband Reflector