[OFARC] Club project
Matthew Paulonis
mgpaulonis at gmail.com
Thu Jul 17 01:45:58 EDT 2014
Terry,
Would love to help out, but I'll be out of town. Keep me in the loop in
the future and I'll let you know if the kids will let me participate.
73,
Matt
W2NS
On Jul 16, 2014 7:50 PM, "Mike Perkins" <mfperkins at comcast.net> wrote:
> I'm forwarding this to the list, ofarc at mailman.qth.net
>
> As for myself, I don't think I'll be able to attend. I have a family
> obligation that day.
>
> Mike, KD5MVL
>
>
> On 7/16/2014 10:31 AM, Ralph (home) wrote:
>
> I’m game
> I can be at his house at 0800
>
> *From:* Terry Moon <w5pcj at hotmail.com>
> *Sent:* Wednesday, July 16, 2014 11:18
> *To:* Ralph (home) <ke5hdf at sbcglobal.net> ; President at ofarc.org
> *Cc:* mike perkins <mfperkins at comcast.net>
> *Subject:* Club project
>
>
> As some of you may know, Jim has a tower at his house on candlelight and
> ella that needs to be moved to the lodge. It's already on the ground and
> Jim will be getting a trailer to move it with but we need a minimum of 4
> people to help load and unload. I've already volunteered to help but will
> need more people to do this. It was suggested last night on the net to
> gather at his house on the 26th which is the morning of our club meeting at
> 9 load it up and unload at the lodge or meet at the lodge first at 9 then
> go over to his house. This tower will be eventually erected at the lodge
> for the club station. Any input is greatly appreciated.
>
> Sent from my W5PCJ cell phone
>
> ----- Reply message -----
> From: "Ralph (home)" <ke5hdf at sbcglobal.net> <ke5hdf at sbcglobal.net>
> To: <President at ofarc.org> <President at ofarc.org>
> Cc: "Terry Moon" <w5pcj at hotmail.com> <w5pcj at hotmail.com>, "mike perkins"
> <mfperkins at comcast.net> <mfperkins at comcast.net>
> Subject: band pass filters
> Date: Mon, Jul 14, 2014 10:01 PM
>
>
> I found a place where I can buy used computer power supplies
> good ones are $15; bad ones are $1
> the cases come open very easily.
> the one I opened has lots of small capacitors, 4 nice toroids and other
> pieces
> I checked against coil sizes given in the write up ... plenty of room
>
> perhaps we can take a few minutes at the July meeting to describe the
> filters and get a read on if the club wants to build them.
>
> Ralph
> KE5HDF
>
> *From:* Ralph (home) <ke5hdf at sbcglobal.net>
> *Sent:* Friday, July 04, 2014 22:40
> *To:* President at ofarc.org
> *Cc:* Terry Moon <w5pcj at hotmail.com>
> *Subject:* band pass filters
>
> Terry and I have discussed the need for band pass filters at next
> year’s field day.
>
> I was looking at a band pass filter design that uses quadfilar toroids
> then Mike sent me the link below
> the multi toroid design requires each inductor to be tuned in 3-4 steps as
> you assemble the entire filter.
>
> the design from N1NC uses coils wound on PVC and suggests using the cases
> from discarded computer power supplies,
>
> Rusty ... I suggest we have 3 meetings over the next year dedicated to
> building a set of filters for the club to use at Field Day.
> (filters for 10, 15, 20, 40, and 80 meters)
>
> 1 – describe the filters and discuss collecting the parts
> 2 – some basic assembly and mutual aid
> 3 – tuning and testing each filter
>
> I will ask the IT group at my office and the pc repair shops near my house
> about old power supplies and see what is available.
>
> Let me know what you think ...
>
>
> Ralph
> KE5HDF
>
>
> *From:* Mike Perkins <mfperkins at comcast.net>
> *Sent:* Friday, July 04, 2014 19:26
> *To:* ofarc at mailman.qth.net
> *Subject:* Re: [OFARC] winding toroids
>
> Lots of folks grip the core in a vise for winding, but there is a risk
> that you could over-tighten and break the core. Here's a method that was
> mentioned in an ARRL letter some time back, that essentially eliminates
> that risk. I've tried it, and it works.
> https://www.youtube.com/watch?v=GT44U10WqRA
>
> But wait, here's an interesting project, and none of those pesky toroids
> to wind. http://www.n1nc.org/Filters/
>
> Mike, KD5MVL
>
> ------------------------------
>
> On 7/3/2014 11:33 PM, Ralph wrote:
>
> A few of us that worked field day have decided to start building band
> pass filters.
> the designs I have found all use biliar or quadfilar wound toroids.
> I will need someone to show me how to wind toroids
>
> Any elmers??
>
> KE5HDF
> Ralph
>
>
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