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| Joined: | Nov 21st, 2009 |
| Location: | United Kingdom |
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mikesndbs wrote::-( I am feeling really paranoid at the lack of replies!
Have you all heard something bad in the clip?
All I can hear is the question.
Hello Mike,
First off…that 17Khz frequency you observed in your other posting could be from a couple of different things.
Your ultrasonic pest repeller in the backyard could be going bad. Do you recall seeing the 17Khz frequency in the recording you did for your Youtube video?
Someone in your area could have the 17.4Khz Mosquito (Youth Note) ring tone or alarm.
Depending on weather conditions, there could have been a spike in a radio station. Desi Radio in Southall is around 16Khz as well as BBC Radio Kent and others, assuming you live in the London area.
I have no opinion on if you should re-use the crystal coil or not.
I know you have DC7 but what are you using to listen to your clips....laptop or desktop? Headphones, earbuds or speakers?
Take Care,
Ron
Hi Ron
Benny Hill eh!OK, the ultrasonic devices were powered off and disconnected.
There are non near by.
I live in Sussex on the south coast of the UK.
I listen via my main computer with hifi speakers and top quality headphones.
Software that is usually involved is:
Goldwave
DC Forensics
Audacity
and of late clear voice, but I find the demo mode annoying.
I tried the coil but was not happy so have removed it.
My current work load is to find out the best diode that I can get and to replace the capacitors with some better quality ones.
Cheers
Mike