QMR-KWT-2 voice repeater test

21

Sorry, typo. The message is now correct. Thank you for bringing this to my attention.

1 Like
22

Thanks for clarification.

23

Thanks for the three strong Contacts and the Sat was nice and loud.

On Pass over Alberta @ 18:20 UTC 2/14/2026

VA7LM in CO54

KB6LTY in DM14

K6SFO in CM88

@ 05:20 UCT 2/15/2026

N0GVK in EN00

KK7WVZ in DN06

Karl.

1 Like
24

2026-02-14 21:05 ~ 21:15 UTC

Listened to QSOs between:

hb9hin - s57nml
hb9hin - pa3gan
s57nml - pa3gan
f0gow - pa3gan
f0gow - s57nml
m0nkc - s57nml
m0yks - r6ni
hb9hin - m0yks
m0jfp - m0nkc
m0yks - m0jfp
hb9hin - m0jfp

4 Likes
25

The FM repeater is now really nice! Made two QSO on Western pass so it’s only two three of us. I inadvertently set my power to low which output only at around 1W but the downlink is really great even at only 26° max. In my opinion compared to the last time, it’s really sensitive and the opening is really sharp :+1:

Great job QMR-KWT 2 team!

3 Likes
26

202602151020 RS95S
BG2HDG JA6SZV

202602151153 RS95S
BG2HDG BI2RN BH3IEK BD8CCU

Hifi voice，like that
SDR Best hrd S4 strong singal

1 Like
27

During the whole test I (KO95) could hear (I’m SWL) at 59 quality these callsigns (during QSO “<>”and just CQ calls)

14.02 - 18:00-18:07 UTC made on turnstile antenna+RTL SRR V4 - R6NI, RA9YV0, RA4UEU, RA9SOA <> RC6ZT , R4LHG

The following observations were made with 7 el. Yagi +RTL SRR V4 in the open field

14.02 - 19:36-19:42 UTC - R6NI<>IW3SSA, S75NML<>R6NI, RA4UEU, RC2SCN

15.02 - 08:28-08:35 UTC - R4HLG<>R5VAZ, R6NI<>S57NML, RA4UEU, R3MDR, SP9TTX<>S57NML

15.02 - 10:01-10:09 UTC - MM7WKK<>DL4KCA, M0SKM, R6NI<>DL4KCA, DL4KCA<>S57NML, DL4KCA<>DL3JOP, PA3GSY<>S57NML, S57NML<>MM7WKK, PA3GSY<>DL4KCA

This time the sound from satellite was much louder, but at first pass a significant echo and “robo-voice“ was observed. Later it was fixed so no more flaws here. I also have all the recordings if needed.

Huge thanks to the satellite team!

3 Likes
28

You spotted me :clinking_beer_mugs:

Fantastic satellite, please turn off data bursts!

Ic-9700 10 watts egg beaters antenna

73 M0JFP

2 Likes
29

Could someone else assist in observing QMR-KWT 2?

Just a few minutes ago, he flew over PN27. I didn’t receive any telemetry data.

What happened?

1 Like
30

Two passes coming up and one right overhead so i’ve set them to track and observe. Station 2009

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31

The Sat is active but with very short data bursts and not the same Data Bursts as usual. Max elevation on the last pass was 13 deg.

There was also a very strong signal during the pass 100kHz lower in frequency but not sure what it was. It had a “ –.– “ pattern when observed on the Icom 9700.

QMR-KWT-2
QMR-KWT-2640×359 85.1 KB

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32

Nearly two days ago they switched TX bitrate from 2400 to 9600, during my last observation 10 hours ago it was still 9600, but it became harder to demodulate/decode as the signal became weaker than before

1 Like
34

Thanks report

The bps speed was also 2400 or like nowa to say change to 9600?

35

RS95S is normal
The rate has changed from GMSK USP 2K4 to 9K6.
Data transmission still occurs every 30 seconds.
When received, the yagi antenna tilts, seemingly due to elliptical polarization?

I will try to decode

1 Like
36

Yes it’s now 9600

37

Yes as can be seen in this observation https://network.satnogs.org/observations/13435133/ the mode is switched to 9600 baud.

UZ7HO running in dual channel

image
image756×354 65.9 KB

Here a modified gr-satellites yaml file:

name: QMR-KWT-2
alternative_names:
  - RS95S
norad: 67291
data:
  &tlm Telemetry:
    telemetry: ax25
transmitters:
  2k4 FSK USP downlink:
    frequency: 436.9500e+6
    modulation: FSK
    baudrate: 2400
    deviation: 1200
    framing: USP
    data:
    - *tlm
  9k6 FSK USP downlink:
    frequency: 436.9500e+6
    modulation: FSK
    baudrate: 9600
    deviation: 2400
    framing: USP
    data:
    - *tlm

gr_satellites QMR-KWT-2.yml --rawint16 iq_13435133_48000.wav --samp_rate 48e3 --iq

-> Packet from 9k6 FSK USP downlink
Container: 
    header = Container: 
        addresses = ListContainer: 
            Container: 
                callsign = u'R2ANF' (total 5)
                ssid = Container: 
                    ch = False
                    ssid = 0
                    extension = False
            Container: 
                callsign = u'RS95S' (total 5)
                ssid = Container: 
                    ch = False
                    ssid = 1
                    extension = True
        control = 0x00
        pid = 0xF0
    info = b'FB\x02\x00\x01\x00\x19\x00\xfb\x00\xfft\x1e\x14\x00\x0ei\xe4\x96i\xb1"\x02\x00\x80%\x00\x00*\x00\xa0\x1e\x00!\xed\x04\x00\x01\x000\x00\x84\x04K\x05t\x05 \x04\xed\x04\x10\x03\x19\x00\x00\x001\x00\x00\x00\x00\x00\x00\x00\x1f\xfeK\xfeE\xfe\x00\xfe\x00@\x00\x00\xb4\x1eC#\x02\x00\xe5\x1b\x97Z\x97\x04' (total 89)

Jan | PE0SAT

3 Likes