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| To: | VIGILANT Luis Fernández <[email protected]> |
|---|---|
| Subject: | Re: LF: LU1DOW soon in MF/LF |
| From: | Chris Wilson <[email protected]> |
| Date: | Tue, 13 Mar 2018 22:11:36 +0000 |
| Cc: | [email protected] |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:message-id:to:cc:subject:in-reply-to:references :mime-version:content-transfer-encoding; bh=ufFNCXZWqdNh4AoZ7sKklhYU43RTz2al722Mv84V8hI=; b=Q/TcaosKDxIkdXTW1sZKwS51zVwDFiRcw1ztS5KjaVTm+WMiuJGt2rJLeaToq2VgJ6 KViGp5ByB0c95VX4GzBpQcX59L2nLM00vhO1ZGj/osrgh1b/AFaVJQpZ6Q4i3Udw9/R1 HS6vvW90mBf9d4+RJp7rQxJpByd53jV5ctBz7YuLh1Mw8p1wJJ2f4sPMy5CTZbE178p/ +DTPqdHs/UiEutyPdelDibTnsXgoMDSzyoTmzOfSahE1JmpLx/9wfS4e7iE0xz6oQMCV kp/12GbsgG4h8izWngOomUhPI6A8vU/AvVk8uDvLAMtWZwxmT6j0D2pn1FdDOtB1aodv 51EQ== |
| In-reply-to: | <579355A36AEE9D4FA555C45D556003AB9ABB2634@servigilant.vigilant.local> |
| References: | <579355A36AEE9D4FA555C45D556003AB9ABB1B77@servigilant.vigilant.local> <[email protected]> <579355A36AEE9D4FA555C45D556003AB9ABB2634@servigilant.vigilant.local> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
Hello Luis, Thanks to you and Oscar. Yes of course, it's a tetrode niot a triode so no need for the filament choke. It looks a nice bit of construction and should whack out a good signal! Tuesday, March 13, 2018, 10:28:55 AM, you wrote: > Hi Chris, LF > Oscar answered the question. I'll try to translate, but can't > promise not to make a mistake in tube terminology :-) > He is not using filament choke as this is a direct heating > tethrode. So the midpoint of the filament transformer secondary is connected > to ground > The driving is to the grid with a tuned circuit. It works in C > class for QRSS and B Class for DFCW. And YES, this a dangerous high voltage > bricolage > and a waste of energy. Just the filament is sucking 35.5 Amps :-O > Oscar plans to test first single carrier in LF with LU8YD at 1000Km > first to check if all is going as in previous tests some time ago. After that > he will switch > to MF and test again > 73 de Luis > EA5DOM -- Best regards, Chris mailto:[email protected] |
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