Re: Finished my Nouveau 75, hum on transmit audio!

John P Lloyd

Yes sir!
That was on my list of things to try.

On Thursday, November 21, 2019, 2:23:01 PM EST, John Lonigro <jonigro@...> wrote:

Do you by any chance have a 12 volt gel-cell or a cigarette lighter plug for your car that you can temporarily power the radio with?  If you run the radio off D.C., and the hum is still there, you can eliminate any power supply issues.

72 and good luck,
John, AA0VE

On 11/21/19 12:54 PM, John P Lloyd via Groups.Io wrote:
Hi Bob,

The hum is there regardless.

Thank you for the information on keying the rig!
73, John W4JPL

On Thursday, November 21, 2019, 12:04:43 PM EST, w9ran <w9ran@...> wrote:

On 11/21/2019 9:00 AM, John P Lloyd via Groups.Io wrote:
> Putting it on an antenna has the same result with the hum.

John -

So are you saying the hum is still present on the dummy load?  Or only
when used on an antenna?

73, Bob W9RAN

PS:   There is not a separate PTT line as in most radios, the N-75
detects the change in voltage that occurs when the mic PTT switch is
closed.  To key the radio w/o the mic you'll need a 4-circuit TRRS plug
- short the sleeve and first ring together.

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