--0__=85256A840076E2ED8f9e8a93df938690918c85256A840076E2ED Content-type: text/plain; charset=us-ascii Check out radio controlled subs... they seem to get a hundred feet or more with about 100mW @ 75mhz (out, not down!) ; ) Scott F. Touchton 1550 Engineering Manager JDS Uniphase O'Reilly John E NORC To: PICLIST@MITVMA.MIT.EDU Subject: [EE]: Underwater RF Sent by: pic microcontroller discussion list 07/09/01 05:35 PM Please respond to pic microcontroller discussion list Has anyone ever tried transmitting from above water to underwater and vice versa? I am thinking of using 2m amateur transceivers on either end, and I'm wondering what kind of range I can get with a couple of watts. Also, if I put one half of the antenna (either ground or radiator) in the water, will that make a difference? TIA John -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body --0__=85256A840076E2ED8f9e8a93df938690918c85256A840076E2ED Content-type: application/octet-stream; name="$RFC822.eml" Content-Disposition: attachment; filename="$RFC822.eml" Content-transfer-encoding: base64 UmVjZWl2ZWQ6IGZyb20gc2pzbXRwMDEudW5pcGhhc2UuY29tIChbMTAuMTAuNDkuMjM5XSkNCiAg ICAgICAgICBieSBzanNtdHAwMS51bmlwaGFzZS5jb20gKExvdHVzIERvbWlubyBSZWxlYXNlIDUu MDdhKQ0KICAgICAgICAgIHdpdGggU01UUCBpZCAyMDAxMDcwOTE0MzM1MTMzOjYxODkxIDsNCiAg ICAgICAgICBNb24sIDkgSnVsIDIwMDEgMTQ6MzM6NTEgLTA3MDAgDQpSZWNlaXZlZDogRlJPTSBj aGVycnkuZWFzZS5sc29mdC5jb20gQlkgc2pzbXRwMDEudW5pcGhhc2UuY29tIDsgTW9uIEp1bCAw OSAxNDozMzo1MCAyMDAxIC0wNzAwDQpSZWNlaXZlZDogZnJvbSBQRUFSLkVBU0UuTFNPRlQuQ09N ICgyMDkuMTE5LjAuMTkpIGJ5IGNoZXJyeS5lYXNlLmxzb2Z0LmNvbSAoTFNNVFAgZm9yIERpZ2l0 YWwgVW5peCB2MS4xYikgd2l0aCBTTVRQIGlkIDwwLjAwMzk0RUIxQGNoZXJyeS5lYXNlLmxzb2Z0 LmNvbT47IE1vbiwgOSBKdWwgMjAwMSAxNzozODo1NyAtMDQwMA0KUmVjZWl2ZWQ6IGZyb20gTUlU Vk1BLk1JVC5FRFUgYnkgTUlUVk1BLk1JVC5FRFUgKExJU1RTRVJWLVRDUC9JUCByZWxlYXNlIDEu OGQpDQogICAgICAgICAgd2l0aCBzcG9vbCBpZCA3NjAyIGZvciBQSUNMSVNUQE1JVFZNQS5NSVQu RURVOyBNb24sIDkgSnVsIDIwMDENCiAgICAgICAgICAxNzozODo1MCAtMDQwMA0KUmVjZWl2ZWQ6 IGZyb20gTUlUVk1BIChOSkUgb3JpZ2luIFNNVFBATUlUVk1BKSBieSBNSVRWTUEuTUlULkVEVSAo TE1haWwNCiAgICAgICAgICBWMS4yYy8xLjhjKSB3aXRoIEJTTVRQIGlkIDM4MzI7IE1vbiwgOSBK dWwgMjAwMSAxNzozNzo1NyAtMDQwMA0KUmVjZWl2ZWQ6IGZyb20gbm9yY2V4MDEuY29yb25hLm5h dnkubWlsIFsxOTIuMzEuMTc0LjUyXSBieSBtaXR2bWEubWl0LmVkdSAoSUJNDQogICAgICAgICAg Vk0gU01UUCBMZXZlbCAzMjApIHZpYSBUQ1Agd2l0aCBFU01UUCA7IE1vbiwgMDkgSnVsIDIwMDEg MTc6Mzc6NTEgRURUDQpYLUNvbW1lbnQ6IG1pdHZtYS5taXQuZWR1OiBNYWlsIHdhcyBzZW50IGJ5 IG5vcmNleDAxLmNvcm9uYS5uYXZ5Lm1pbA0KUmVjZWl2ZWQ6IGJ5IE5PUkNFWDAxIHdpdGggSW50 ZXJuZXQgTWFpbCBTZXJ2aWNlICg1LjUuMjY1My4xOSkgaWQgPE1aTUw4V0ZKPjsNCiAgICAgICAg ICBNb24sIDkgSnVsIDIwMDEgMTQ6NDI6MTUgLTA3MDANCk1JTUUtVmVyc2lvbjogMS4wDQpYLU1h aWxlcjogSW50ZXJuZXQgTWFpbCBTZXJ2aWNlICg1LjUuMjY1My4xOSkNCk1lc3NhZ2UtSUQ6ICA8 ODc0MDZDRjY0NzVBRDMxMTg3N0QwMDkwMjc3QTMwRDEwMjRFRDA4QUBOT1JDRVgwMz4NCkRhdGU6 ICAgICAgICAgTW9uLCA5IEp1bCAyMDAxIDE0OjM1OjQ5IC0wNzAwDQpSZXBseS1UbzogICAgIHBp YyBtaWNyb2NvbnRyb2xsZXIgZGlzY3Vzc2lvbiBsaXN0IDxQSUNMSVNUQE1JVFZNQS5NSVQuRURV Pg0KU2VuZGVyOiAgICAgICBwaWMgbWljcm9jb250cm9sbGVyIGRpc2N1c3Npb24gbGlzdCA8UElD TElTVEBNSVRWTUEuTUlULkVEVT4NCkZyb206ICAgICAgICAgTydSZWlsbHkgSm9obiBFIE5PUkMg PE9SZWlsbHlKRUBDT1JPTkEuTkFWWS5NSUw+DQpTdWJqZWN0OiAgICAgIFtFRV06IFVuZGVyd2F0 ZXIgUkYNClRvOiAgICAgICAgICAgUElDTElTVEBNSVRWTUEuTUlULkVEVQ0KWC1NSU1FVHJhY2s6 IEl0ZW1pemUgYnkgU01UUCBTZXJ2ZXIgb24gU0pTTVRQMDEvU2VydmVyL0pEU1VuaXBoYXNlKFJl bGVhc2UgNS4wN2EgfE1heSAxNCwgMjAwMSkgYXQNCiAwNy8wOS8yMDAxIDAyOjMzOjUxIFBNLA0K CVNlcmlhbGl6ZSBieSBSb3V0ZXIgb24gU0pTTVRQMDEvU2VydmVyL0pEU1VuaXBoYXNlKFJlbGVh c2UgNS4wN2EgfE1heSAxNCwgMjAwMSkgYXQNCiAwNy8wOS8yMDAxIDAyOjMzOjUyIFBNLA0KCVNl cmlhbGl6ZSBjb21wbGV0ZSBhdCAwNy8wOS8yMDAxIDAyOjMzOjUyIFBNDQpYLU5vdGVzLUl0ZW06 IDE4Ow0KIHR5cGU9MzAwOyBuYW1lPSRIb3BzDQpYLU5vdGVzLUl0ZW06IE1lbW87DQogbmFtZT1G b3JtDQpYLU5vdGVzLUl0ZW06IENOPVNKU01UUDAxL09VPVNlcnZlci9PPUpEU1VuaXBoYXNlOw0K IHR5cGU9NTAxOyBmbGFncz00NDsgbmFtZT0kVXBkYXRlZEJ5DQpDb250ZW50LVR5cGU6IHRleHQv cGxhaW47IGNoYXJzZXQ9Imlzby04ODU5LTEiDQoNCkhhcyBhbnlvbmUgZXZlciB0cmllZCB0cmFu c21pdHRpbmcgZnJvbSBhYm92ZSB3YXRlciB0byB1bmRlcndhdGVyIGFuZCB2aWNlDQp2ZXJzYT8g IEkgYW0gdGhpbmtpbmcgb2YgdXNpbmcgMm0gYW1hdGV1ciB0cmFuc2NlaXZlcnMgb24gZWl0aGVy IGVuZCwgYW5kDQpJJ20gd29uZGVyaW5nIHdoYXQga2luZCBvZiByYW5nZSBJIGNhbiBnZXQgd2l0 aCBhIGNvdXBsZSBvZiB3YXR0cy4gIEFsc28sIGlmDQpJIHB1dCBvbmUgaGFsZiBvZiB0aGUgYW50 ZW5uYSAoZWl0aGVyIGdyb3VuZCBvciByYWRpYXRvcikgaW4gdGhlIHdhdGVyLCB3aWxsDQp0aGF0 IG1ha2UgYSBkaWZmZXJlbmNlPw0KDQpUSUENCkpvaG4NCg0KLS0NCmh0dHA6Ly93d3cucGljbGlz dC5jb20jbm9tYWlsIEdvaW5nIG9mZmxpbmU/IERvbid0IEF1dG9SZXBseSB1cyENCmVtYWlsIGxp c3RzZXJ2QG1pdHZtYS5taXQuZWR1IHdpdGggU0VUIFBJQ0xpc3QgRElHRVNUIGluIHRoZSBib2R5 DQoNCg0K --0__=85256A840076E2ED8f9e8a93df938690918c85256A840076E2ED-- -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body