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Forum: Tech Log

5th Jun 2006, 06:37

Replies: 226

Use of 121.5mhz (Merged)

Views: 43,798

Posted By chevvron

DFC: as far as I'm aware, very few civil ATC...

DFC: as far as I'm aware, very few civil ATC units have 121.5 installed, hence they can't turn it down or off; oh they may have an ICOM to dial it up, but it's certainly not on their main radio...

Forum: Tech Log

4th Jun 2006, 08:03

Replies: 226

Use of 121.5mhz (Merged)

Views: 43,798

Posted By chevvron

Don't know whether they're already in use...

Don't know whether they're already in use somewhere, but it would seem to me that a VHF frequency close to 121.5 could be allocated for practice emergencies eg 121.475 or 121.525. It would require...

Forum: Tech Log

21st May 2006, 13:19

Replies: 226

Use of 121.5mhz (Merged)

Views: 43,798

Posted By chevvron

Andu:the number of calls on 121.5 in Rhine...

Andu:the number of calls on 121.5 in Rhine airspace could be because the crew have omitted to either select or de-select 8.33kz on their radio, thus when changing to/from an 8.33 channel, they...

Forum: Tech Log

20th May 2006, 18:24

Replies: 226

Use of 121.5mhz (Merged)

Views: 43,798

Posted By chevvron

Anyone understand what klink is talking about...

Anyone understand what klink is talking about 'cos I don't.

Forum: Tech Log

20th May 2006, 17:01

Replies: 226

Use of 121.5mhz (Merged)

Views: 43,798

Posted By chevvron

PETF 243.8 was in use from the early '70's. Few...

PETF 243.8 was in use from the early '70's. Few if any civil ATC units can Tx/Rx on 121.5 so arguments that ATC can 'easily' contact an aircraft listening on it are pointless; the ATC unit involved...

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