ISS Activity Thread
- Thread starter Radiowawez
- Start date
- Status
ka3jjz
Wiki Admin Emeritus
Another round of SSTV activity is scheduled on April 11, per the DXLD Yahoo group and the Southgate ARC...Mike
ka3jjz
Wiki Admin Emeritus
For those of you using MM-SSTV for seeing these transmissions, here are a few tips from the Southgate ARC announcement that was relayed via the DXLD Yahoo group...
=============================================
Paul Turner G4IJE, co-developer of the SSTV PD modes, says regarding the MMSSTV PD180 mode: “Don’t forget to either enable “Always show RX viewer” or use the “Picture viewer” (magnifying glass icon) to show the picture at its real resolution of 640 x 496. If you just view as normal you will only see 320 x 248 resolution, which kind of defeats the object of using a high resolution mode.”
On the AMSAT-BB Rick W2JAZ and Alan WA4SCA comment on the need to set the MMSSTV sound card setting to 48 kHz instead of the default 44.100 kHz
The MMSSTV default setting may need to be set to 24000 (exactly half of the sound card setting). You then should get good clean images.
The sound card adjustments will vary slightly depending on the version of the OS you are running, but usually will be under the advanced properties for the device. You can probably use a higher sampling rate for the sound card so long as it is a power of 2 multiple (2,4,8, etc) of the value in MMSSTV. For instance 192k (8x) has no issues. The same applies to most similar software.
Mike
=============================================
Paul Turner G4IJE, co-developer of the SSTV PD modes, says regarding the MMSSTV PD180 mode: “Don’t forget to either enable “Always show RX viewer” or use the “Picture viewer” (magnifying glass icon) to show the picture at its real resolution of 640 x 496. If you just view as normal you will only see 320 x 248 resolution, which kind of defeats the object of using a high resolution mode.”
On the AMSAT-BB Rick W2JAZ and Alan WA4SCA comment on the need to set the MMSSTV sound card setting to 48 kHz instead of the default 44.100 kHz
The MMSSTV default setting may need to be set to 24000 (exactly half of the sound card setting). You then should get good clean images.
The sound card adjustments will vary slightly depending on the version of the OS you are running, but usually will be under the advanced properties for the device. You can probably use a higher sampling rate for the sound card so long as it is a power of 2 multiple (2,4,8, etc) of the value in MMSSTV. For instance 192k (8x) has no issues. The same applies to most similar software.
Mike
ISS image
ISS image on 145.800 from earlier this evening..
ISS moves fast and they have couple minutes between transmissions so hard to get solid image.
Using MMSSTV set to Auto rx mode/(radio squelch off) and with computer mic under BC-780 scanner .Nothing fancy!
also watching ISS location via http://iss.astroviewer.net/
ISS image on 145.800 from earlier this evening..
ISS moves fast and they have couple minutes between transmissions so hard to get solid image.
Using MMSSTV set to Auto rx mode/(radio squelch off) and with computer mic under BC-780 scanner .Nothing fancy!
also watching ISS location via http://iss.astroviewer.net/
Attachments
Last edited:
kd7mxi
Member
they use aprs often i hear ,,
- Status
