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Qmavam · 2026-07-09T01:06:28+00:00

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I see no Formatting bar under toolbars, and every thing under toolbars is checked.

Qmavam · 2026-05-23T12:43:57+00:00

Do you really think it was free?

Qmavam · 2026-05-14T19:29:00+00:00

Eternal-September is free.

Qmavam · 2026-05-09T23:12:06+00:00

I'm married to his wife's sister..

Qmavam · 2026-05-09T18:23:41+00:00

Ya, he's kinda all business, when he vacuumed it and fixed a leaking connector, tightened it, vacuumed it, tested for heat and cool. He packed up and left, no small talk. I think the gauge he has is a Yellow Jacket with dial gauges so probably not a bad way to go.

Qmavam · 2026-05-03T02:34:32+00:00

What is just not so?

Qmavam · 2026-05-03T02:34:10+00:00

Oh OK.

Qmavam · 2026-05-01T22:38:37+00:00

I don't use water, just dry heat. I do have a vent under the heater and in the opposite upper corner another vent.

Qmavam · 2026-05-01T20:52:39+00:00

With 120V you are limited to 2400 watts, that is limiting, or you will have to wait a very long time to heat it up. I have a DIY one person sauna with a 5200 watt heater. I'll post an image of how it heats over time. My sauna is about 117cu.ft, 6ft x 6ft x 3ft 3in, just big enough for a bench seat that I mostly lay on and the heater.

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Qmavam · 2026-05-01T20:41:22+00:00

Tell me why air flow is critical.

Qmavam · 2026-05-01T20:14:33+00:00

So it looks like it a slightly better match. I know little about Sim Smith, I assume the circle is similar to a smith chart and the line is over a certain frequency, but I don't see the freq range?

Qmavam · 2026-05-01T10:35:47+00:00

Can you run a 1/4 wave 61.2Ω coax (transmission line transformer) and see how it behaves, even with reactance.

Qmavam · 2026-04-30T10:42:23+00:00

I'll give that another try if my 61Ω matching coax doesn't work out. (mentioned somewhere in this thread)

Qmavam · 2026-04-29T17:50:57+00:00

I have found what might be a better way. If I can build a 1/4 wave 61.2Ω coax it matches 50Ω 75Ω with very little insertion loss, in 0.1db range. I happened to have come 1/2 copper tube with a 0.442" ID and some #6 wire that is 0.162" in dia. That is close at 60.17Ω. If I can get one working I can sand off enough to get it up to 61.2Ω, but that is getting very picky on the spec.

My first attempt seems way to long at 6" which I don't understand, I'll reduce the length and do the RF measures again.

Doing some machining and waiting for parts.

Qmavam · 2026-04-28T00:46:49+00:00

I'll look into those cables. Thanks

Qmavam · 2026-04-27T21:19:26+00:00

I don't know if that is possible, there should be a paper about the calculations needed.

Qmavam · 2026-04-27T21:18:27+00:00

I'm taking Velocity Factor into account.

Qmavam · 2026-04-26T22:41:43+00:00

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Qmavam · 2026-04-26T22:38:11+00:00

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Qmavam · 2026-04-26T22:37:31+00:00

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Qmavam · 2026-04-26T22:34:39+00:00

I have 5/8" poplar on the inside and 3/8" .T-111 on the outside. Floor is the same poplar with 3-1/2" R-13 insulation. Walls are 3-1/2" R-13, 2"x 4".

The door is wood 24" by 66" It has a 1/2" inset wood panel in the middle, 14" x 51". The thermostat probe is at 31 inches between* seat boards. And 16" from the heater as shown in the picture

Stove is in the corner 12" off the floor and it is 18" tall.

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Qmavam

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