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Dwight, I like that counterweighted roof setup. I've never seen anything like that. It gives you great low angle viewing! The roof on my primary observatory is motorized so it tracks on rails but the

Emanuele Yes, I prefer to look at R26 and C29 as the plate load Impedance, so the V1 output voltage is developed thru it, and as you reiterated there is no V1-V2 obvious intended coupling in band

Nice looking setup.? I love New Mexico for the landscape.? You don't see this on the east coast. My step-son lives in Houston. We have driven there a couple of times and know it is a long trip. We

This topic raised in the "TRIMCAPs don't peak" thread. I think it's worth its own thread. Here it is. In the S-85 there is no obvious coupling between the RF amplifier tube (v1) and the MIX/OSC tube

Hi Dwight, I've attached a few pics of the Pie Town setup. Actually, it's two sites. One is a rolltop with a connected warm room. The other is a hill top site with a typical dome and an incredible

Hey Dwight, Thanks for the email. FB on your Rio Rancho observatory. As you might guess, I’m not up there every weekend for several reasons. It’s a 17 hour drive one way for me from Houston.

Rick W7IMM, If you would please contact me offline. 73/Randy WN9D

Hey Tom.? I had an observatory in Rio Rancho for a while.? I would love to see your setup.? My wife and I went to Pie Town once and they did not have any pies.? WTF!!! Let me know when you are

For several years during the 1970s my only rig was a Heath HW-7 running 3 watts with which I worked over 30 states on 40 CW using an attic dipole. Lots of fun. You can't work everyone you hear with

That Dummy is not so dumb?

Last year I turned the rig on and the band sounded in really poor shape but there was a station calling CQ and I answered and worked him. Afterwards I realized why the band was quiet. I was on the

And for proof of the power theory (fact) I just completed a cw Q to Wake Island over the weekend accidentally driving my Acom 1500 which was till tuned for 15M while having the K4 set for 100W drive

I would tend to agree. If I am not mistaken,? the SR 500 in good repair and alignment would presumably do somewhere around 250-275W PEP output based on operating it at 500W PEP input. My HT44 with

The comparison of horizontal sweep tubes vs the 6146 should probably include mentioning the fact that the vacuum tube manufacturers did not use CCS/ICAS ratings for nearly all the? sweeps (some

We shouldn't loose sight of the original topic, which was the use of the 6DQ5 in place of the 8236. The 6DQ5 has a plate dissipation of 24 watts and transconductance of 10.5K. The 6DQ6 is 18 watts and

Hi all, As I recall, there was a bit of a "horsepower" (er, Peak Envelope Power - PEP) thing going on during the late 60s and 70s where manufacturers focused on the 'peak' power (PEP) rather than

Hi, Emanuele, I hope that you get as much enjoyment from your S-85 as I do from my S-40B. But Don brings up some interesting thoughts. We might all learn something from all of this. At one point

Emanuele, you can’t get away with this without doing a post-mortem for the benefit of many many others that might go down your road starting where you started. [Smiley-face here] The coax has

Hello Emanuele, So my intuition was right. Happy to know that all is good with your S-85 now. Case closed ! 73, Jacques, VE2JFE in Montreal MEA CULPA!! SORRY!! SORRY!! SORRY!! SORRY!!

Hello Wolfgang, From the schematic and the "normal" voltages chart in the SX-117 manual, the primary +B voltage at C117B looks to be 200V. Which means a transformer HV secondary of 280Vct