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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hello Luis, Thanks for the update. I am in the midst of starting to think about winding a loading coil for the 50 foot vertical in the front yard. Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [74.6.133.42 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 1273381c241b4bc851b7e848e0897dc9 Subject: LF: Tricotosa Rotory Table Content-Type: multipart/alternative; boundary="------------6B6B590E5871724CA0A589D5" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_FONT_BIG, HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false This is a multi-part message in MIME format. --------------6B6B590E5871724CA0A589D5 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Hello Luis, Thanks for the update. I am in the midst of starting to think about winding a loading coil for the 50 foot vertical in the front yard. What is the revolutions per minute of your rotary table ? What speed are you most comfortable with ? I am also thinking of a nested "bucket brigade" for a tunable loading coil. My initial thought was to use a lathe and I built up a jig to horizontally hold the 5 gallon plastic bucket. Unfortunately I could not get the speed low enough to allow me to comfortably wind the single layer coil. The lathe has a DC motor and the DC drive board could not be adjusted low enough. I think I need about 0-20 RPM. 0.02mm solid wire is about a #32 AWG or a #36 British WG, rated at ~ 90 milliamperes. My initial thought was to use a wide double sticky tape at about 4 locations on the bucket, about 90 degrees apart. I am also considering a tape over the entire coil after winding to hold everything in place. Another thought is a clear UV proof epoxy over the entire coil, to hold in place. My concern is the derating of the current due to the reduced dissipation of heat in the covered coil. Back to the drawing board..... My coil winding will start with #22 AWG from a 4.4 Kg spool. Stan, W1LE   Cape Cod   FN41sr On 2/18/2019 7:20 AM, VIGILANT Luis Fernández wrote: > Hi Stefan, VLF > > The "Tricotosa" works nicely. Added a pedal to activate the motor, which is very useful > > --------------6B6B590E5871724CA0A589D5 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

Hello Luis,

Thanks for the update. I am in the midst of starting to think about winding a loading

coil for the 50 foot vertical in the front yard.

What is the revolutions per minute of your rotary table ?

What speed are you most comfortable with ?

I am also thinking of a nested "bucket brigade" for a tunable loading coil.

My initial thought was to use a lathe and I built up a jig to horizontally hold the 5 gallon plastic bucket.

Unfortunately I could not get the speed low enough to allow me to comfortably wind the single layer coil.

The lathe has a DC motor and the DC drive board could not be adjusted low enough. I think I need about

0-20 RPM. 0.02mm solid wire is about a #32 AWG or a #36 British WG, rated at ~ 90 milliamperes.

My initial thought was to use a wide double sticky tape at about 4 locations on the bucket, about 90 degrees apart.

I am also considering a tape over the entire coil after winding to hold everything in place.

Another thought is a clear UV proof epoxy over the entire coil, to hold in place.

My concern is the derating of the current due to the reduced dissipation of heat in the covered coil.

Back to the drawing board..... My coil winding will start with #22 AWG from a 4.4 Kg spool.


Stan, W1LE   Cape Cod   FN41sr




On 2/18/2019 7:20 AM, VIGILANT Luis Fernández wrote:
Hi Stefan, VLF

The "Tricotosa" works nicely. Added a pedal to activate the motor, which is very useful
--------------6B6B590E5871724CA0A589D5--