[CW] Resonant CW Speaker

[stan levandowski]

Is the hole in your "number 5"  one-eighth inch or larger?  Yes, the 
volume gets a little louder with a slight tilt but unless the room is 
absolutely quiet I can't hear it from more than a couple feet away.  And 
yes, the CW certainly pops out. I'll keep experimenting until I get it 
right because I think it will be worth it.


73, Stan WB2LQF


On Mon, Feb 06, 2017 at 07:14 PM, Benny Owens wrote:

> STAN
>
> BILL GAVE ME SERIAL NUMBER 5 OF THOSE SPEAKERS.  IT IS AMAZING BUT I
> NOTICED IF I TILTED IT TOWARD ME THE VOLUME INCREASED.  I HAD SOME OLD
> QSL CARDS FROM A PAST QTH AND TAPED ONE AROUND THE TOP AND SIDES OF
> THE PVC ELBOW AND IT SOUNDS NIGHT AND DAY LOUDER.  I HAVE BEEN USING
> IT FOR ALMOST A YEAR NOW AND LOVE IT.
>
> 73
> BENNY K5KV
>
> On Mon, Feb 6, 2017 at 4:54 PM, stan levandowski  wrote:
>> I built the resonant speaker in the current QST.  It "works" in that 
>> I
>> certainly hear the "peak" with my 600 Hz sidetone and I can tune a CW 
>> signal
>> and hear that "peak" also.  However, there is NOT ENOUGH VOLUME.
>>
>>
>> I used the exact parts that the author used; ordered them all "fresh" 
>> from
>> Amazon so no "junk" from the junkbox was implicated.
>>
>>
>> I figured I had screwed up, so I built a second one, thinking I might 
>> have a
>> speaker anomaly.  The second speaker was the exact same speaker 
>> called for
>> in the article also.  Same exact results.  If I screwed up at least I 
>> was
>> consistent ;-)
>>
>>
>> If anyone builds a resonant speaker that produces sufficient volume, 
>> I'd
>> like to get in on the details.
>>
>>
>> Clearly, I see where resonance has value but I just can't get the 
>> volume I
>> need.
>>
>>
>> I now wonder if the 1/8" centered hole in the plastic was suspect 
>> since the
>> recently posted Youtube video clearly had something on the order of 
>> 1/4" or
>> larger.
>>
>>
>> 73, Stan WB2LQF
>>
>>
>> On Mon, Feb 06, 2017 at 04:11 PM, Howard wrote:
>>
>>> Steve Weber also has a really easy to build resonant speaker that
>>> might prove interesting to some.
>>>
>>> http://kd1jv.qrpradio.com/resonatespkr/CWSPKR.HTM
>>>
>>> I built mine a few years ago, and am pleased not only with its
>>> performance, but with its looks as well!
>>>
>>> 73 de W2AFD
>>>
>>> On Fri, Feb 3, 2017 at 8:52 PM, D.J.J. Ring, Jr.  wrote:
>>>>
>>>> I watched a few of the YouTube videos, this one seemed most 
>>>> informative.
>>>>
>>>> Steve Ellington, N4LQ has a SkyTec speaker which he dissects and 
>>>> shows
>>>> you the secrets inside.  He also explains the principles of these
>>>> resonant tube speakers.
>>>>
>>>> https://www.youtube.com/watch?v=MF8bk6958Hg
>>>>
>>>> Bravo, Steve, very well done.  Thanks for sharing!
>>>>
>>>> 73
>>>> David N1EA
>>>> ______________________________________________________________
>>>> CW mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/cw
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:CW at mailman.qth.net
>>>> CW List ARCHIVES: http://mailman.qth.net/pipermail/cw/
>>>> Unsubcribe send email to
>>>> cw-unsubscribe at mailman.qth.net
>>>> Subscribe send email to cw-subscribe at mailman.qth.net
>>>> Support this email list: http://www.qsl.net/donate.html
>>>>
>>>> =30=
>>>
>>> ______________________________________________________________
>>> CW mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/cw
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:CW at mailman.qth.net
>>> CW List ARCHIVES: http://mailman.qth.net/pipermail/cw/
>>> Unsubcribe send email to
>>> cw-unsubscribe at mailman.qth.net
>>> Subscribe send email to cw-subscribe at mailman.qth.net
>>> Support this email list: http://www.qsl.net/donate.html
>>>
>>> =30=
>>>
>> ______________________________________________________________
>> CW mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/cw
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:CW at mailman.qth.net
>> CW List ARCHIVES: http://mailman.qth.net/pipermail/cw/
>> Unsubcribe send email to
>> cw-unsubscribe at mailman.qth.net
>> Subscribe send email to cw-subscribe at mailman.qth.net
>> Support this email list: http://www.qsl.net/donate.html
>>
>> =30=
> ______________________________________________________________
> CW mailing list
> Home: http://mailman.qth.net/mailman/listinfo/cw
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:CW at mailman.qth.net
> CW List ARCHIVES: http://mailman.qth.net/pipermail/cw/
> Unsubcribe send email to
> cw-unsubscribe at mailman.qth.net
> Subscribe send email to cw-subscribe at mailman.qth.net
> Support this email list: http://www.qsl.net/donate.html
>
> =30=
>