Log in
Register
Menu
Log in
Register
Home
What's new
Latest activity
Authors
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
General Topics
Pictures of Members' Setups and general satellite
My current Fibo setup
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="johnsattuk" data-source="post: 257277" data-attributes="member: 183150"><p>The motor driving the dish has a multistage simple gearbox, which conseqently generates a variety of freqencies/vibrations.</p><p></p><p>It is likely that one or more of these freqencies excite the resonent freqency of the dish, and are amplified considerably. If you hold the bare motor in your hand, or resting on the carpet or similar, they do not make much noise in themselves, the dish and the mount amplifies this noise.</p><p></p><p>The edge of the excited dish will likely have the greatest amplitude and will be most effected by any means applied to dampen it's resonance. I have used various materials on dishes, underseal, damping pads as used on cars. but have not tried foam as yet, because it had not occured to me.</p><p></p><p>The foam seems like a good idea, because it is quick, easy and cheapish, and sticks like the proverbial, I shall be trying this out in the near future. I will probably foam the whole of the back of the dish. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="johnsattuk, post: 257277, member: 183150"] The motor driving the dish has a multistage simple gearbox, which conseqently generates a variety of freqencies/vibrations. It is likely that one or more of these freqencies excite the resonent freqency of the dish, and are amplified considerably. If you hold the bare motor in your hand, or resting on the carpet or similar, they do not make much noise in themselves, the dish and the mount amplifies this noise. The edge of the excited dish will likely have the greatest amplitude and will be most effected by any means applied to dampen it's resonance. I have used various materials on dishes, underseal, damping pads as used on cars. but have not tried foam as yet, because it had not occured to me. The foam seems like a good idea, because it is quick, easy and cheapish, and sticks like the proverbial, I shall be trying this out in the near future. I will probably foam the whole of the back of the dish. :D [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
General Topics
Pictures of Members' Setups and general satellite
My current Fibo setup
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top