- AMSAT-BB - mailman.amsat.org

Logging QSOs on QRZ.com
by Bob Keating 11 Feb '19

11 Feb '19

Greeting All, First of all, my hat is off to Casey KI7UNJ and Jonathan KI7BEX for freezing their tails off in order to bring us a bunch of rare grids from BLM land in Nevada, thanks guys!!! Dmitri N6DNM emailed me that he couldn't confirm our satellite QSO on QRZ, even though all the data seemed to be correct. I have noticed this as well, that none of my satellite QSOs have been confirmed on QRZ either. We both uploaded our contact information via TQSL, filling all the information including transmit and receive bands and frequencies and then loaded it up to LoTW. I also use the specific frequency at the middle of the passband, for example, 435.350 and 145.880 for AO-92. I also save the adif file, naming it for the specific satellite and then upload it to QRZ.com and my HRD logbook. Why aren't my satellite QSOs getting confirmed on QRZ? Thanks for your help. 73 Bob N6REK

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Solar panel inverters--radio noise?
by Burns Fisher 11 Feb '19

11 Feb '19

I think I have heard somewhere that solar panel inverters can be horribly noisy. I think that maybe I heard that the micro inverters are the worst. Does anyone have experience? What bands are worst hit? Any particular inverter brand/type good or bad? How far from the inverter is your shack/antenna? Thanks and 73, Burns Fisher WB1FJ

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ISS reception (WIDE1-1 no-no) - APRS Gospel
by Robert Bruninga 11 Feb '19

11 Feb '19

> BUT according to your log... Bhutan-1 is responding > to Wide1-1, not ARISS / RS0ISS / et al... It is not responding, but it is generating a Beacon from Bhutan-1: >> 1:Fm BIRDBT To APTT4 Via WIDE1-1 <UI R Pid=F0 Len=50> >> [16:28:38R] [-++] HELLO! THIS IS APRS-DIGIPEATER OF BHUTAN-1 CUBESAT My APRS recommendation for ALL APRS satellites since 2001 is that they should support these three aliases: Via ARISS - (for backward compatibility with ARISS users) Via APRSAT - (for ALL APRS satellites) Via WIDEn-N - (for those that forget to switch from Terrestrial mode) And, that simple periodic health telemetry from such satellites may be sent "via APRSAT" so that they can be heard beyond the horizon if there is another APRS satellite that is closer. Sending these spacecraft packets via WIDE1-1 is not good for the channel. It has the potential to generate footprint QRM anywhere in the world where a user may have their radios set to also be a fill in digipeater when used terrestrially. Such radios will key up on receipt of this packet and block the satellite for a full packet period. Thus reducing user throughput. All it takes is for one person in the whole country to have his rig set for fill-in digi, and this ueless extra WIDE1-1 will add this useless QRM on the uplink over that entire footprint. And no one except someone living within a few miles of this mistake will ever be able to detect it. Though it impacts everyone. I was certain I had published these settings as APRS SPACE GOSPEL, but just now I looked over all my aprs satellite p[ages and cannot find it anywhere except in the detail settings for each of my satellites. I'm sure it is in an AMSAT paper somewhere... Bob

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ft 817 sstv
by James Brown 10 Feb '19

10 Feb '19

just set up for next ISS pass in 15 minutes . FT 817 signalink and MMSSTV any notes on settings. I have so far failed to decode pictures. I do have audio codex ! Jim KI6WJ

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MarconISSta spectrum analyzer experiment results
by Scott 10 Feb '19

10 Feb '19

Hello everyone. Sometime around 5-Feb-2019, there was an appeal from the Project Team running the MarconISSta spectrum analyzer experiment on the ISS for Amateurs to transmit on 70cm when the ISS was visible. The reason for this was because apparently the experiment was going to be powered off in just a few days. https://marconissta.com/2019/02/05/urgent-call-all-power-to-the-iss/ Along with a lot of other folks world-wide, I chose a frequency not "claimed" by anyone else nor close to other cubesats & transmitted a constant tone (FM) with a periodic 1200 baud packet ID through several passes of the ISS during the period requested. Thanks to a tweet from IW1DTU (I believe correct call sign), https://twitter.com/supertrack_it/status/1094665078853562369 ... I was alerted to the fact that there were result graphs online from the MarconISSta project. https://marconissta.com/2019/02/08/all-power-to-the-iss-first-results/ Using the dates, times, & frequency that I had transmitted, I'm pretty sure that I found myself on a couple of the waterfall graphs. Nothing surprising or particularly unique here, but I thought it was pretty neat to match up my transmission to their results. Here is a tweet I posted on this with an image showing "me". https://twitter.com/scott23192/status/1094681761458597889 73, -Scott, K4KDR

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Re: [amsat-bb] IC9700 Update
by Bob Hammond 10 Feb '19

10 Feb '19

Thanks! Astron it is. Bob W7OTJ On Sun, Feb 10, 2019 at 8:56 AM David J. Schmocker <kj9idave(a)charter.net> wrote: > Bob: > I echo Frank¹s good input. I would append this with recommendation to use > a linear (not switching) Astron Power supply because they¹re electrically > quiet. If your P/S needs to power the radio only, an Astron RS-35M would > be large enough. On the other hand, if you also need to power other > devices (such as linear power amplifier), then you¹ll need to go bigger or > use multiple RS-35Ms, etc. Remember the ratings on these P/Ss are > Intermittent Carrier as used in Amateur Service (ICAS) meaning 50% > (approx.) duty cycle.. Great for CW or SSB. However for any full duty > cycle mode such as WSJT, FM? etc, then you need to derate the power supply > so it¹s capabilities are not exceeded. > Switch-mode Power Supplies (switching supplies or 'switchers¹) are smaller > and lighter weight with the trade-off that they generate electrical noise > (because of how they regulate the output level) and inherently are noisy. > Linear supplies are bigger and heavier (and less power-efficient) but for > those trades, one gets absolute electrical quiet performance because they > don¹t hot-switch power signals away from a zero-crossing. If you wish to > see an animated Œhow switching power supplies work¹ video (approx. 14 > minutes), here¹s one I share when explaining this concept. > https://www.youtube.com/watch?v=vwJYIorz_Aw > > Very 73, > > Dave KJ9I > > On 2/10/19, 10:32 AM, "AMSAT-BB on behalf of Frank" > <amsat-bb-bounces(a)amsat.org on behalf of K6FW1(a)verizon.net> wrote: > > >I have used Astron power supplies for years. Pick the appropriate > >current rating. > > > >Frank > >K6FW > > > >> On Feb 10, 2019, at 7:15 AM, Bob Hammond <propgrinder(a)gmail.com> wrote: > >> > >> I'm ready to order mine along with a power supply. Any suggestions on > >>PS? > >> > >> Bob W7OTJ > >> > >> On Sat, Feb 9, 2019 at 8:21 PM Thomas Schaefer <ny4i(a)ny4i.com> wrote: > >> > >>> FYI - When I ordered mine from DXEngineering (due to the reservation I > >>> placed), they said if the price drops from the $2098 before it ships, > >>>it > >>> will sell for the lower price. That also do not charge one¹s credit > >>>card > >>> until it ships. > >>> > >>> Tom NY4I > >>> > >>>> On Feb 9, 2019, at 9:44 PM, radiomb <radiomb(a)bellsouth.net> wrote: > >>>> > >>>> Just purchased a IC9700 today at Hamcation. It was great to see one > >>>>in > >>> person. I got it for $1995. Icom said all back orders should be filled > >>>by > >>> end of April. They said they should have enough in stock so that anyone > >>> that wants one at Dayton can get it. I was happy to get it for $1995. > >>>No > >>> tax or shipping. > >>>> _______________________________________________ > >>>> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > >>>> to all interested persons worldwide without requiring membership. > >>> Opinions expressed > >>>> are solely those of the author, and do not reflect the official views > >>>>of > >>> AMSAT-NA. > >>>> Not an AMSAT-NA member? Join now to support the amateur satellite > >>> program! > >>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > >>> > >>> _______________________________________________ > >>> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > >>> to all interested persons worldwide without requiring membership. > >>>Opinions > >>> expressed > >>> are solely those of the author, and do not reflect the official views > >>>of > >>> AMSAT-NA. > >>> Not an AMSAT-NA member? Join now to support the amateur satellite > >>>program! > >>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > >>> > >> _______________________________________________ > >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > >> to all interested persons worldwide without requiring membership. > >>Opinions expressed > >> are solely those of the author, and do not reflect the official views > >>of AMSAT-NA. > >> Not an AMSAT-NA member? Join now to support the amateur satellite > >>program! > >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > > > >_______________________________________________ > >Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > >to all interested persons worldwide without requiring membership. > >Opinions expressed > >are solely those of the author, and do not reflect the official views of > >AMSAT-NA. > >Not an AMSAT-NA member? Join now to support the amateur satellite program! > >Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > > >

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FT-847 ISS Voice
by NA1SA Loon ?? 10 Feb '19

10 Feb '19

Attempting to set up ISS voice frequencies on a Yaesu FT-847 using OmniRig CAT control. Enter 145.800 FM for RX and 144.490 FM for TX. Rig recognizes frequencies when ISS is selected, and tracks for doppler. When I push PTT, I get "ERROR" on the TX Frequency. Any thoughts on how to correct the problem? Loon NA1SA

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Dopler Adjust in IC-7100
by lu9cbl＠gmail.com 10 Feb '19

10 Feb '19

Hi to all! In my groundstation, i'm have orbitron to track the satellite, and WISPDDE to interact with the rotor (Yaesu) and the transceiver (IC7100). Reading the WispDDE software (from the source code that it's publicly available), we use the template of IC-910 to command the equipment, but acctually have a problem when we try to adjust dopler correction via USB, for both VFOs. Aparently to adjust the frequency of the VFOB, need first to put this VFO in the MAIN VFO. It's there any way to adjust the frecuency via USB, for BOTH VFOs (A and B), but mantain the MAIN VFO only for the VFO A? i cant find any information in the equipment manual. Thanks in advance. Mati LU9CBL --- El software de antivirus Avast ha analizado este correo electrónico en busca de virus. https://www.avast.com/antivirus

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G-5500/LVB Tracker
by George Sakai 10 Feb '19

10 Feb '19

Has anyone experienced problems with the Elevation or Azimuth indicator (meter) of G-5500 rotator ? The Elevation meter does not move at all. The LVB Tracker shows correct Azimuth and Elevation angles and the G-5500 rotator follows the correct angles. However, the Elevation meter of G-5500 remains at zero degree. The Azimuth meter works just fine. Thanks. 73, George N3GS

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IC9700 Update
by radiomb 10 Feb '19

10 Feb '19

Just purchased a IC9700 today at Hamcation. It was great to see one in person. I got it for $1995. Icom said all back orders should be filled by end of April. They said they should have enough in stock so that anyone that wants one at Dayton can get it. I was happy to get it for $1995. No tax or shipping.

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