Date   
Re: How important is it to have a full duplex ht

Clint Bradford
 

To work the "easy FM voice satellites," it is absolutely NOT mandatory to work them 
full-duplex.

BUT - it sure helps hearing your downlink - making sure you are (a) hitting it well and 
(b) not accidentally stepping on someone else!

Treat it like you do your local repeaters: You don't intentionally key up on top of 
someone else. You wait for a break in the action, THEN keep up and announce 
yourself.

Clint K6LCS

How important is it to have a full duplex ht

Hank Tyler
 

to work the fm birds? What’s your opinion?

Re: AMSAT-NA - Website and Journal - New Look!

Jer W
 

Thanks.


On Friday, May 1, 2020, 9:25:39 PM EDT, Clint Bradford via groups.io <clintbradford@...> wrote:


You can save almost $20 on MacDoppler if you are a member of AMSAT-NA.

Order it through the AMSAT-NA online store!

Clint

Re: AMSAT-NA - Website and Journal - New Look!

Jer W
 

If by any chance and have the time, please send me one screen shot
of one of the passes.

Jerry...W8RQM






On Friday, May 1, 2020, 9:22:08 PM EDT, Clint Bradford via groups.io <clintbradford@...> wrote:


>> ... is anyone on Work-Sat groups using MacDoppler ... 

Yes - for MANY years ... since 2006 ...

>> ... doppler shift ... ICOM IC-9700 ...

MacDoppler certainly support the '9700 ... See their Web site and documentation at ...

https://www.dogparksoftware.com/MacDoppler.html


 
MacDoppler: will calculate the position and relative  velocity of the satellites you are tracking and automatically adjust the Doppler shift on  both transmit and receive as well as pointing your antennas with predictive dead spot  crossing so that a pass is never interrupted.
 

Re: AMSAT-NA - Website and Journal - New Look!

Clint Bradford
 

You can save almost $20 on MacDoppler if you are a member of AMSAT-NA.

Order it through the AMSAT-NA online store!

Clint

Re: AMSAT-NA - Website and Journal - New Look!

Jer W
 

Thank you so kindly Clint. I will read all that info later tonight.
Thanks again.

Jerry...W8RQM



On Friday, May 1, 2020, 9:22:08 PM EDT, Clint Bradford via groups.io <clintbradford@...> wrote:


>> ... is anyone on Work-Sat groups using MacDoppler ... 

Yes - for MANY years ... since 2006 ...

>> ... doppler shift ... ICOM IC-9700 ...

MacDoppler certainly support the '9700 ... See their Web site and documentation at ...

https://www.dogparksoftware.com/MacDoppler.html


 
MacDoppler: will calculate the position and relative  velocity of the satellites you are tracking and automatically adjust the Doppler shift on  both transmit and receive as well as pointing your antennas with predictive dead spot  crossing so that a pass is never interrupted.
 

Re: AMSAT-NA - Website and Journal - New Look!

Clint Bradford
 

>> ... is anyone on Work-Sat groups using MacDoppler ... 

Yes - for MANY years ... since 2006 ...

>> ... doppler shift ... ICOM IC-9700 ...

MacDoppler certainly support the '9700 ... See their Web site and documentation at ...

https://www.dogparksoftware.com/MacDoppler.html


 
MacDoppler: will calculate the position and relative  velocity of the satellites you are tracking and automatically adjust the Doppler shift on  both transmit and receive as well as pointing your antennas with predictive dead spot  crossing so that a pass is never interrupted.
 

Re: AMSAT-NA - Website and Journal - New Look!

Jer W
 

Just an inquiry, is anyone on Work-Sat groups using MacDoppler
and how is working with doppler shift? I am contemplating a purchase of
an ICON IC-9700, but not at this time.

MacDoppler: will calculate the position and relative velocity of the satellites you are tracking and automatically adjust the Doppler shift on both transmit and receive as well as pointing your antennas with predictive dead spot crossing so that a pass is never interrupted.

Jerry...W8RQM



On Friday, May 1, 2020, 5:42:19 PM EDT, Clint Bradford via groups.io <clintbradford@...> wrote:


The March-April AMSAT (NA) Journal was just released - in color and as 
a .pdf on their NEW LOOK Website! 

It takes a lot of work to make a good, readable-on-many-systems .pdf 
magazine. This one reads very nicely!

https://tinyurl.com/AMSAT-JOURNAL


AMSAT-NA - Website and Journal - New Look!

Clint Bradford
 

The March-April AMSAT (NA) Journal was just released - in color and as 
a .pdf on their NEW LOOK Website! 

It takes a lot of work to make a good, readable-on-many-systems .pdf 
magazine. This one reads very nicely!

https://tinyurl.com/AMSAT-JOURNAL


Re: Wouxun KG-UV9d PLUS - HRO Open Box

Randy Davenport
 

THIS model - the Powerwerx-distributed KG-UV9D PLUS from them or HRO - is, indeed, 
true full-duplex for AO-91/91 ... but NOT for SO-50: It will not work full-duplex on
440 Downlink / 2M Uplink satellites.

SO-50 can certainly be worked with it - just not full-duplex.

Clint


>> Is the Wouxon full duplex?
>> Randy ka4nma

 

Wouxun KG-UV9d PLUS - HRO Open Box

Clint Bradford
 

Just noticed that HRO has an "open box" KG-UV9D PLUS ... 

https://www.hamradio.com/detail.cfm?pid=H0-015307&oi=1



KG-UV9D Plus 999 Channel Dual-Band Handheld - 7-Band Receive

OPEN ITEM

Regular Price: $189.95

HRO Discount Price: $170.96*

Re: AO-92 to Camera Mode

 

I have been using the RTL-SDR Blog variant with good success. There seem to be some other interesting options now including some that claim to be modified for HF usage or have BiasT. I think I've even found some cheap, clones of the RTL-SDR Blog variant now on Ebay where the fonts look a little off. I might have to review the market options, though, I think the next SDR I buy will probably be focus on 1.7 GHz for use with collecting NOAA high-resolution satellite imagery. I'm not sure if my HackRF is up to the task.

- Loren
K7IW

Re: Quetzal-1 - Argentina

Clint Bradford
 

QUETZAL-1
1 99836U 98067RJ  20119.17395362  .00001998  00000-0  43915-4 0  9997
2 99836  51.6451 236.0002 0001478 199.2001 225.5884 15.49326450224263


-from  Universidad del Valle de Guatemala 

Re: AO-92 camera mode

 

The data is sent as a series of packets using FSK modulation over the FM downlink. There is normally always something being sent as long as the repeater is being kept active, but it is usually sent as slow-speed 200 bps Data-Under-Voice (DUV) in the sub-200 Hz audio range and will be filtered out by most FM receivers as it is in the same range as PL tones. You generally won't hear it in this case. The recent camera experiment is using the High-Speed mode sending at 9600 bps and can clearly be heard over the voice channel even with a regular FM receiver (though some of the important content may still be filtered out). If you are using an SDR receiver to capture the signal, make sure any audio filtering and squelch is turned off during the pass. The audio from either mode can be fed into Foxtelem to decode the satellite telemetry and, if you enable it, can be uploaded to AMSAT servers and attributed to your callsign as helping the greater good.

- Loren
K7IW


On Tue, Apr 28, 2020 at 10:04 PM Rob Ramsey <ramsey4@...> wrote:

A little more info please on the camera mode of AO-92 , Is this just a real time transmission as the satellite is overhead or close by? is it stored and sent continuously for a predetermined time? I had my station on remote all day got nothing here in New Zealand ZL3TCM

Re: AO-92 camera mode

Clint Bradford
 

It is “near live” - and you’ll probably just receive portions of a photo ...

AO-92 camera mode

Rob Ramsey
 

A little more info please on the camera mode of AO-92 , Is this just a real time transmission as the satellite is overhead or close by? is it stored and sent continuously for a predetermined time? I had my station on remote all day got nothing here in New Zealand ZL3TCM

Re: Quetzal-1 - Argentina

Clint Bradford
 

QUETZAL-1
1 99990U 98067A   20119.56587424  .00001440  00000-0  33911-4 0  9990
2 99999  51.6450 234.0607 0001480 200.5697 251.6220 15.49325980224329


Plugging this in to GPredict ...

Re: Quetzal-1 - Argentina

 

I wish that would have occurred to me before I missed the last good pass for today. However, someone did post that it's in the AMSAT Argentine TLEs:


- Loren
K7IW

On Tue, Apr 28, 2020, 16:29 Clint Bradford via groups.io <clintbradford=mac.com@groups.io> wrote:
Just using the ISS’ TLE for a day or so ...

Re: Quetzal-1 - Argentina

Clint Bradford
 

Just using the ISS’ TLE for a day or so ...

Re: Quetzal-1 - Argentina

 

Where are the current TLEs for this satellite being published? I haven't found them yet.

- Loren
K7IW