RE: Sound heads
Posted by:
joe brandt
()
Date: May 03, 2001 07:19PM
<HTML>Sound location was done by 11 ( later 24 ) circular sound receivers arrainged in a semi circle on each side of the forward hydroplanes . This was called GHG or GRUPPENHORCHGERÄT -GROUP LISTENING DEVICE . Early war type 7\'s also had a rotating device on the foward deck called KDB or KRISTALLDREHBASIS GERÄT-. Very few late war type 7\'s had the BALKON GERÄT listening device added but was standard on the type XXI , this was a big bulbus device that had 24 receivers with 2 diaphrams each , it could detect sounds all around the boat except an approx 60 degree arc directly aft of the boat.</HTML>
| Subject | Written By | Posted |
|---|---|---|
Sound heads
|
Frank | 05/03/2001 03:08PM |
|
RE: Sound heads
|
joe brandt | 05/03/2001 07:19PM |
|
RE: Sound heads
|
joe brandt | 05/04/2001 07:20PM |