Hi

Changed and rewound T1 on my

QDX2 (Ver4) Hi band?

10m and 11m are perfect now

to dummy load 2.8W

It was T1 !

Thanks again Hans

73 muhsin TA1MHS

Hi Stu

You can buy an TinySA (plus? attenuators, I'm using 20dB + 30dB 20Watt) to check levels and harmonics

It was very useful for me.??

73 muhsin TA1MHS

note: 5 watts is 37dBm, if you use two attenuators (20+30=50) -27dBm is very OK for TinySA

?

On 04/02/2023 15:03, Ron VE8RT wrote:

... As it will be over areas with a high density of amateur operators
I'd think that a few people might try using it as a reflector.
Ron VE8RT

And/or download its "weather data ?

Bouncing greetings back to the originator might not be approved, of course...

Michael 2E0IHW

Interesting idea. I do not have anyone in range but I've read articles
on microwave two way QSOs using scatter from the tops of thunderstorm
clouds. In the past I've used scatter from aircraft flying nearby (on
2M). As it will be over areas with a high density of amateur operators
I'd think that a few people might try using it as a reflector.

Ron VE8RT

On Fri, 03 Feb 2023 21:53:09 -0800
"J P Watters via groups.io" <jpwatters@...> wrote:

Ron,

If I was only closer, I would us an AM modulation on my 100W laser and see if I could bounce that off of the ballon. :)

--
Ron VE8RT <ve8rt@...>

Many

On 04/02/2023 09:07, Stewart G3YSX wrote:

because they knew when they would be overhead.

I worked with a guy who had lived in Novosibirsk and worked on missiles nearby. When the iron curtain came down he didn't believe it would last and so packed a few clothes in a bag and made his way to the west. He was a good programmer.

Anyway, where he worked they had a party member who had the printout of when the US spy satellites were due each day. Had to be someone trustworthy with that info ;-) The guy's job was to sit around outside drinking coffee/vodka and tell the crews working outside that the satellite was due. The workers then threw assorted camouflage nets etc. over stuff in yards, lorries etc. and went for a drink. Later he'd give the all clear, camouflage was removed and worked continued.

With a balloon that lingers you seriously hamper such evasion techniques.

Still amusing to see the indignation shown by Uncle Sam et al. when someone does what they do back to them.

Question: for years the US has been selling off its Helium reserves cheap. Is this balloon full of US Helium. Uncle Sam hoisted by their own Petard. Or Helium in this case!

Andy
(part American so I'm laughing at my own kin here)

This is what I’m looking for! ?I have a spare 40m QCX, and would like to change it to 15m. ?Is is simple as changing the windings on the toroids, or something more involved? ?I was planning on just going through the construction manual, noting the differences, and doing a reset. ?

The band filter for RX is switched by IC3.
The LPF (RX and TX) is controlled directly by the IC-8 microprocessor
and a few MOSFets.

Hint 12V is really 12V, use a meter to verify that, or risk another failure.

--
Allison
------------------
Post online only, please no email.

Check your computer clock, it MUST be accurate to within a couple of seconds.
The filter switching is tested when you do the filter sweeps. The 20m filter does not look good but it works and is known about.

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The Times commented on it this morning. Unlike LEOs the balloon can loiter for long periods of time. If you read (for example Jacobson’s book Area 51) about the development of the stealth and spy aircraft you will see that they actively hid from the spy sats because they knew when they would be overhead. They also played some deception games with them. You cannot evade an observation ballon of this type in the same way, and of course being lower than a satellite they would capture a lot more detail.

K

On 3 Feb 2023, at 13:35, William Smith <w_smith@...> wrote:

?Some stories claim that you can 'steer' a balloon by changing altitude (without going in to sufficient detail about how that might be done), while not actually claiming that _this_ balloon has those capabilities.

It would be easy to change height by putting more gas in the envelope to go up, and of course releasing it to go down. However in a sophisticated ballon with a relatively heavy payload and solar power as this seems to be, you could extract gas from the envelope and compress it into a cylinder to preserve the gas for future use.

Stewart/G3YSX

The USA has spy satellites spinning round the world gathering intelligence and are worried about a balloon , unbelievable.

Ron,

If I was only closer, I would us an AM modulation on my 100W laser and see if I could bounce that off of the ballon. :)

Missed opportunity?

I wonder if from the ground, last heard it was at about 60K feet, if
the payload has as much reflective surface as the first communications
satellite, Echo 1.

Its too far from me, but is anyone up for trying VHF and up DX by
reflection off of it?

Ron VE8RT in DP22

On Fri, 3 Feb 2023 10:29:30 -0800
"Bob W7DIT" <cent@...> wrote:

There is an outcry to shoot it down, I hope they capture it. Maybe a
nano-sized hole made by a laser would do it. In all honesty, it's not any
worse than an orbiting spy satellite.

Bob W7DIT

--
Ron VE8RT <ve8rt@...>

On 3 Feb 2023 at 20:06, 9V1SA wrote:

Or is it just a case of pot luck then cover the wires with
ferrite chokes?

read the comments in this thread. many postings
have indicated units that have been found to have
NO RFI problems ... the ones I recently posted are
perfectly clean in my experience.

w2jc

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If you can’t enjoy the absurdity of it all, please just mute this topic..... these interruptions to windings and blown components are relaxing. ?And to boot many folks here actually fly balloons and it is interesting if not hilarious, hey, some want to send an F-22 after a balloon.... that’s not a fair fight !

These DC-DC converters look interesting - is there any rule for figuring out which ones are going to generate RFI and which ones would be clean? Or is it just a case of pot luck then cover the wires with ferrite chokes?

Sounds like a job for our newly created Space Force to have fun with a goal of bringing it down safely? over US territory and give it a good examination.

RESOLVED: Turns out IC4, the FST3253, was the culprit.
Thanks to everyone how responded and helped out.
Its a testament to how awesome this group is.
--
regards,
Bryan, N0LUF