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Пікірлер
@5wheels521 10 күн бұрын
❤
@saywhat2014 Ай бұрын
I have the 6 meter and the two meter and the Par's work great. I had the M/2 and it was in no way was as good.
@rjbrake 5 ай бұрын
Hey guys, does anyone know what in the living fuck this guys saying?
@LoenieMovies 2 ай бұрын
Yes, anyone knows. Seems like you're not anyone.
@JeffHochberg 6 ай бұрын
What a wonderful video! Would you consider making more content on other things you do with Macdoppler? For example, do you use it to control a rotator? I would love to see you cover that. Thank you for your consideration. 73, W4JEW
@jimeagle1 3 ай бұрын
I have not used it with a rotor. My rotor is only manual.
@user-yv3xb7to1z 7 ай бұрын
thank you for the video regards Allan G6TMO UK
@linsfunbox4052 10 ай бұрын
Nice video! How do you prevent from rolling issue? a lot free flight aircrafts don't even have adjustable rudder and ailerons, but they are not rolling.
@jimeagle1 10 ай бұрын
The tabs on either side of the root end of the main wing can be used to trim roll tendencies. Most balsa free flight trim roll, pitch, and yaw by bending control surfaces slightly (rudder, elevator, wing tips)
@linsfunbox4052 10 ай бұрын
Nice video. 1 quick question. Will balance be changed when motor is turned on?. I made one free flight too. It flies fine when motor is turned off, but headstand immediately when motor is turned on. Not sure what caused it. kzfaq.infon4aJKsgRNE8
@jimeagle1 10 ай бұрын
Do you have the correct prop on the motor? Sounds like it is blowing forward rather than backward.
@linsfunbox4052 10 ай бұрын
Thank you for replying. It blowing backward. I changed motor's position close to aircraft body. No immediate headstand issue now. I am assuming motor position is headstand issue. kzfaq.infoH3NqXJulceo
@PowderMill 10 ай бұрын
Wait a sec… Same “OJ” that is infamous for the slow White Bronco Pursuit? Imagine the hairballs?!? 😆 Sorry feline fans. I just couldn’t resist childish jocularity. Yet another excellent video… I’m certainly enjoying my “binge watching” time here. I have just the perfect use for this… I have a piece of 7/8” Heliax to thoroughly test. It’s direct buried at my brother’s newly purchased farm. I still can’t understand why the previous “Ham” didn’t bother spending a few extra cents and a few minutes (or hours?) of time burying schedule 40 PVC conduit and pulling the hard line through, along with spare pull strings and spare cabling.. The cable seems intact but performance of the attached repeater is spotty. I plan on heading there myself to test everything. Thank you Sir.
@PowderMill 11 ай бұрын
I am so damn jealous! Nope… not of the equipment. Not of the KZfaq fame and fortune 😆. I am so jealous of your MOUNTAINS! In most of New Jersey you can occasionally see the Jersey Shore when the medical waste isn’t obstructing the water. The rest? Burned out ghettos, chemical plants and abandoned garbage dumps and landfills. Why can’t I see those beautiful mount from here? 😆🤣 Seriously.. Thanks for your videos.
@jirihamersky6152 Жыл бұрын
Thanks for the video. I come here to study. Thanks.
@felipefigueroa9449 Жыл бұрын
My compliment
@Simon-mz7sf Жыл бұрын
Thankyou
@salasmomonicesalas1257 Жыл бұрын
what is the motor diameter cuz i used smaller ones they could not create enough thrust
@jimeagle1 Жыл бұрын
See UPDATE above
@TheGmr140 Жыл бұрын
finally a video that shows the correct way to measure PEP power, using zero-span on a spectrum analyzer. it should be noted, that the RBW, VBW should be greater than the signal's modulation bandwidth to ensure correct power measurement. 30khz RBW should be good for SSB. but for pulsed signals, radar, etc, RBW should be 10Mhz to measure correct pulsewidth and peak power.
@nunya4244 Жыл бұрын
Thank you for this. Beautiful!
@PY4SR Жыл бұрын
Nice video James!
@ralphfanni9467 Жыл бұрын
very similar vid like that form apr 2018 with updated software 👍
@germanjohn5626 Жыл бұрын
A 30db attenuator gives you a minimum of 60db return loss not 30db. Why? because the power the analyzer sees gets attenuated 2 times once going to the open port and once being reflected back through the attenuator. www.ittc.ku.edu/~jstiles/622/handouts/Attenuators.pdf
@jimeagle1 Жыл бұрын
The return loss can easily be less than twice the loss of of the attenuator if the attenuator is not exactly 50 ohms with no capacitive or inductive reactance
@germanjohn5626 Жыл бұрын
A few years ago I swept my 4x18xxx array with a spectrum analyzer and a tracking generator with a generator output of 0dbm (1mw) when I got a call from a friend living 40 miles away asking me to listen for mysterious sweeping carrier on the 2m band. Turned out it was my setup. Always be aware that your carrier doesn't stay in your system but is radiated and can potentially interfere in and outside the ham bands. Use the lowest tracking signal amplitude you can live with.
@kostas-ny4qz Жыл бұрын
Very nice presentation,thank you!
@kostas-ny4qz Жыл бұрын
Hi mr Jim, very informative video! could you try to reverse the cables - the input on the output and the output to the input to check if they still have same matching?
@kostas-ny4qz Жыл бұрын
Hi, very interesting video!I was wonder about measurement with wattmeter, is necessary to calculate the coax length between tx and the dummy load (includes the meter)? I mean for accuracy metering.
@patrickbuick5459 Жыл бұрын
While I'm not sure of where certain frequencies are on the horizontal scale, it appeared that even on shorter HF bands, there may be an advantage to the NC connectors.
@ColeDedhand Жыл бұрын
To get the length down for 450MHz just mount the aerials parallel.
@larzhillbot1443 2 жыл бұрын
good build for working with foam board nice flights i use to make all foam gliders also but now i have a shinto rasp so i can shape 1/4 balsa wings pretty fast the shinto cuts the balsa like it was butter of course i sand in the final finish Big Thumbs up check out Carl Rambo Poly B josh finn has a nice video on it
@larzhillbot1443 2 жыл бұрын
i would love to have one but the shipping cost is Crazy as much as the air frame
@jimeagle1 2 жыл бұрын
That is a problem.
@TheRealBobSmith. 2 жыл бұрын
Very interesting . Thank You .
@FC-go4zb 2 жыл бұрын
what is the name of the song in the background?
@cliffengle2897 2 жыл бұрын
The DNR function on all the newer Yaesu products is outstanding. I read the 991A's DSP chip is the same as in the 891, 101D, 101MP. The 3000's DSP chip is the same as in the 5000 and 1200. I have the 3000 and love it. Jim, while on 15M you had the digital notch filter DNF on, but it was turned off for 17M. When I do that on my 3000, I get the enhanced "watery" sound you did at setting 4. With DNF off, I can run DNR up to 9+ without watery sound. Maybe it'll work for you as well. 73
@davideisenberger6197 2 жыл бұрын
Jim, why do you save the references?
@jimeagle1 2 жыл бұрын
It has been awhile but I believe saving the reference is part of Rigols recommended calibration proceedure for tracking generator use. This evens out the variations in the digitally generated TG levels. I think I covered this in other videos in this series.
@jbx907 2 жыл бұрын
its kinda funny why the freq goes up when the plunger goes in, is the plunger actually shortening when going in?
@alerey4363 2 жыл бұрын
the motor+supercap combo seems pretty powerful, maybe tuning the propeller (size, pitch, angle) and plane CG to allow a steeper climb and get more air time? the descent is pretty smooth too, very parallel to the ground
@jimeagle1 2 жыл бұрын
Some have done as you suggest. The AMA now has super cap powered free flight categories and Joshua Finn at jhaerospace.com has kits and comments. He has some videos here on youtube as well
@Qstick333 2 жыл бұрын
Are you able to monitor yourself with a satellite mode? I have the older FT847 which allows that
@kadaokim4719 2 жыл бұрын
ya
@jerrydaugherty3781 2 жыл бұрын
Enjoy your videos, W9FS
@ericreiter1 2 жыл бұрын
The cat was a good laugh. Good video. Thank you.
@crimson0arrow 2 жыл бұрын
Hello James, I enjoyed your video. I have some Telewave bandpass filters. Is there a simple way to convert them to Band pass / band reject?
@jimeagle1 2 жыл бұрын
If you had the correct Pass-Reject loop for the can, it is fairly simple. However, it also requires a special can top to allow for the required anti-resonant tuning cap. It might be possible to get this done by Telewave but I haven't worked there for a number of years thus don't know their current policies.
@crimson0arrow 2 жыл бұрын
@@jimeagle1 Thank you for the quick reply James. Unfortunately I know little about Cavities. For the Pass-Reject loop does it have to go inside the can or attach to the connector at the top? Same for the anti-resonating tuning cap? Finally could please point me to where I might get the construction details.
@jimeagle1 2 жыл бұрын
As I indicated, this isn't really something that can be "homebrewed". The factory might do it for a price but it takes significant changes to the top of the unit and the loop inside. Best done at the factory.
@kostas-ny4qz 2 жыл бұрын
Hi, very interesting video, thank you!What is the price about ZFDC-10-5-S+
@stevenmclean9149 2 жыл бұрын
Hello James do you have your settings for 100 and up for 991 please.
@lowellyates6685 2 жыл бұрын
Where did you find the rotating globe graphic? This will serve my purposes to a T
@vaibhavjain2791 3 жыл бұрын
Nice plane and nice flight. Could you please confirm, if I observed correctly in the video when showing top view of plane, that you have made provision for elevator (seems raised up) and rudder in the tail section to help in the flight?
@jimeagle1 3 жыл бұрын
Yes, I provided for elevator and rudder trim. I usually use individual left and right elevators to allow slightly different trim to flatten out turns. Rudder is normal. All are relatively small compared to rc planes since we are only trying to provide trim, not aerobatic controls. I also may trim the main wing, if needed.
@vaibhavjain2791 3 жыл бұрын
@@jimeagle1 Thanks for the response. Yes, I noticed left and right elevators separate. I am recently learning more about rc planes, and your information and video is helpful.
@z1power 3 жыл бұрын
Does the DNR work in FM mode?
@spaceman7925 3 жыл бұрын
No ESD protection !
@PowderMill 3 жыл бұрын
😷 👍🏻 Thank you. You have a great channel . RF & duplexer tuning and you have the same spectrum analyzer that I had as my first jump into test instrumentation. This channel is ideal for CCP Chinese Communist Party Virus PLANdemic Binge Watching!! 😷🦠🤓🤣
@DarcyWhyte 3 жыл бұрын
Okay I found some capacitors! So exciting! They're rated 2.7 and 3 V. I noticed you're using 4.5V battery pack. So I suppose in theory you're charging above the 2.7V? I guess 4.5 doesn't do any quick harm? I'm supposing if it's over their limit it might mean limited life but I think these things will still outlast our applications. Does that sound about right?
@jimeagle1 3 жыл бұрын
Actually I go by how long I charge the capacitor. I usually stop at 10 to 20 seconds which only allows about 2.7 Volts. As the cap charges to near its max voltage it will reduce the rate at which it accepts further voltage. I haven't had any cap failures. You can observe this using an amp meter. Charge rate starts at about 2-3 amps but drops rapidly as the cap voltage increases. Keep in mind that standard AA batteries have moderate internal resistance. I wouldn't use LiPo batteries this way because they would likely charge too fast and too high in voltage. They would be OK if used in a regulated circuit like shown in the sonex413 videos, however.
@DarcyWhyte 3 жыл бұрын
@@jimeagle1 Thanks for the note. I think I will make a charging circuit so it will always go to the same voltage. That way if I use a higher current solution it will be a fairly fast charge. Just a thought. Further, I'm thinking of having a voltage boost to make the voltage at the motor constant. Or even create my own profile of power. Just a crazy thought. Where do you live by the way? I'm up in Ottawa in Canada.
@jimeagle1 3 жыл бұрын
@@DarcyWhyte Actually, I have converted some to LiPo power and RC. I use 8-9 gram batteries, typically, for this. I live in San Jose, CA thus stay in the park flyer category... mostly 12-30 inch (30-70cm) foam wings under 50 grams all up weight. Quieter and safer for urban flying though restricting my flight opportunities to wind speeds under 10 MPH ( 16 km per hour)... usually in the early morning or near sunset.
@DarcyWhyte 3 жыл бұрын
@@jimeagle1 Perhaps once I get going at this we could have some zoom sessions! I'm trying to interest some of my friends in this so I will not be alone at the park. But I'll do it alone if I have to.. :)
@DarcyWhyte 3 жыл бұрын
Wow nice! Is that a 2.7V x 10 F capacitor?
@Ibelieve218 3 жыл бұрын
WHATS THE POINT OF HAVING SPECTRUM ANALYZERS THAT CAN ONLY GO DOWN TO 1KHZ????
@jimeagle1 3 жыл бұрын
The 815 in current production goes down to 10 Hz. The earlier version that I had when this video was made goes to 100Hz. As stated, I was using 300 Hz RBW, not 1kHz.
@Ibelieve218 3 жыл бұрын
@@jimeagle1 I have 2 one is 1khz the other is 9khz
@pamelavelez-vega3839 3 жыл бұрын
Hi Jim, I am new at this and I am trying to help my 7 year old son build this. Can you please provide the specifications for the capacitor and the plug to charge it? Where do you buy them?
@jimeagle1 3 жыл бұрын
Details are in the text under the video. Parts available from Amazon or Banggood. Both also carry pre-built Capacitor Powered Planes. Visit their sites for availability.