[TenTec] AM operation (Jupiter 538)

[Bill Mahaffey]

I have read this. Numerous times.
For months.

And I have followed it as well as my
limited mental capabilities permit.

It does not work here.

Auto-set does not work as documented.

Thanks for responding.

73, Bill W6EET




> Jason N1SU,
> 
> The following information was copied from the RF Squared web site... 
> 
> This procedure does work..!
> 
> 73, Larry - W1GOR
> 
> 
> Setting up AM transmit
> 
> 
>   AM transmit capability has been added to the Jupiter and 
>   Pegasus transceivers. The transceiver must be adjusted 
>   before using AM transmit to set the carrier level. The 
>   carrier level should be adjusted to  25 Watts or less. 
>   The basic steps are similar on the Jupiter and Pegasus 
>   transceivers. In addition, the Jupiter has an additional 
>   auto-set mode. The microphone gain should be adjusted in 
>   SSB mode to prevent over modulation while in AM mode. If 
>   you are already using the transceiver in SSB then the setting 
>   should be fine. Presently AM Transmit Bandwidth is not adjustable.
> 
> 
> JUPITER 538
> 
>   On the Jupiter, two controls operate differently while in AM mode. 
>   The PWR setting control changes to become AM DRIVE control. This 
>   control is used to adjust the carrier level. The TUNE button 
>   activates a function called AM-AUTO-SET. When TUNE is pressed the 
>   transceiver will turn on the transmitter and adjust the AM-DRIV 
>   control for a nominal 25 Watt carrier. It takes the transceiver 
>   several seconds to perform this operation. When the process is 
>   complete the transceiver will return to receive. It is important 
>   to know that during this process the output from the transceiver 
>   will be a full 100 Watts. A dummy load should be used and any 
>   amplifiers in line should be switched to bypass. After the AM-AUTO-SET 
>   the AM DRIVE control can be used to adjust the output if needed. 
>   The PWR setting is not accessible in AM mode as AM DRIVE is used to 
>   adjust the power output.
> 
> 
> -----Original Message-----
> From: tentec-bounces at contesting.com
> [mailto:tentec-bounces at contesting.com]On Behalf Of Jason Buchanan
> Sent: Tuesday, March 16, 2004 2:17 AM
> To: tentec at contesting.com
> Subject: [TenTec] AM operation
> 
> 
> 
> Has anyone out there any experience running AM on the Jupiter?
> 
> 
> I pressed the TUNE button while in AM mode but didn't see anything 
> change as I expected - AM drive, mic gain, etc all stay the same values. 
>   The jupiter's meter shows 14 watts out and just sits there until I 
> press TUNE again to make it stop.
> 
> 
> Any ideas/suggestions?
> 
> 
> Thanks!
> 
> 
> 73 Jason N1SU
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