I’ve been monitoring the OlyCom3 (Tiger Mt E) repeater with my RTL-SDR. I have 2 SDRs V-3 and V4. Both are reading the same.
The repeater output looks to be 1MHz off center as shown in the 1st pic. Moving the freq up to 626 (pic 2) shows the signal at center of the modulation. You can clearly see it by the station ID in CW (pic 3).
As an experiment, I tuned my SDR to a strong commercial FM station. My reasoning is these stations broadcast in Wide FM as well. So for instance 97.7 KIRO FM booms in the Puget Sound area The signal is center frequency. At 97.6 I still read the station OK but fidelity suffers. Same with 97.8.
I'm still learning so I thought I would ask more experienced people here.
Has the Repeater drifted off frequency or is this normal due to the positive offset setting? I'm unsure.
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PugetSounder
I’ve been monitoring the OlyCom3 (Tiger Mt E) repeater with my RTL-SDR. I have 2 SDRs V-3 and V4. Both are reading the same.
The repeater output looks to be 1MHz off center as shown in the 1st pic. Moving the freq up to 626 (pic 2) shows the signal at center of the modulation. You can clearly see it by the station ID in CW (pic 3).
As an experiment, I tuned my SDR to a strong commercial FM station. My reasoning is these stations broadcast in Wide FM as well. So for instance 97.7 KIRO FM booms in the Puget Sound area The signal is center frequency. At 97.6 I still read the station OK but fidelity suffers. Same with 97.8.
I'm still learning so I thought I would ask more experienced people here.
Has the Repeater drifted off frequency or is this normal due to the positive offset setting? I'm unsure.
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