21 күн бұрын
2 ай бұрын
3 ай бұрын
4 ай бұрын
5 ай бұрын
5 ай бұрын
5 ай бұрын
5 ай бұрын
5 ай бұрын
6 ай бұрын
Пікірлер
3 күн бұрын
I like to do 1 or 2 loops of coax then clamp the cores over the loops and try to keep this close to the transceiver.. By adjusting the distance between the cores and the size of the loop you can find some good rejection for whatever the noise is..
@GraymanPOTA 3 күн бұрын
If you have any questions or comments, drop them down below. 👇
@HamRadioDuo 3 күн бұрын
Thank you so much for the shout out!! It was great meeting you and already looking forward to next year. 😊 73, Becky N4BKY es Mike N4FFF
@GraymanPOTA 3 күн бұрын
You are quite welcome. Keep putting out the videos and having fun.
@201mxflyboy201 4 күн бұрын
Was good meeting and talking with you at monte sano pota.
@benielishackove2686 5 күн бұрын
Thank you for the experiment. I would love to know what happens in any of the next applications of the chock. 1. Switching PS: input - 240v 1amp 50hz\60hz - output 12v\5v 3amp, 1 chock 1 wire and multi chock vs multiloops of wire in 1 chock. (in a charging cable outer power supply\ex) 2. what happens in network data cables with a chock? (100mb\1gb\2.5gb\5gb\20gb?\40gb?) 3. Speaker wire let's say the signal is 20hz-20khz and another more HIFI 5hz-100khz? (we can check multiple gauges) 4. what happens on a power wire 240v 16amp 50hz\60hz (application is OLED TV\AV Receiver\PC Power\ex) 5. benefits of applying it to DATA cables (USB 1\2\3\4\firewire\ex) I don't believe you can make this video, but if you do, you win a new subscriber for life.
@marcelorodriguez9601 6 күн бұрын
🇦🇷🇺🇸 I HEARD THAT YHE MOST YOU CHOKE WITH FERRITES IMPEDANCE INCREASE AND IS NOT GOOD.
@ricdonato4328 10 күн бұрын
Never will I subscribe to a channel which plays music over their presenter's voice. Please, turn off the background music! It is beyond me why KZbin content creators think playing background music over the presenter's voice is somehow enhancing their videos. We came to hear you; we are not here to fight background music to hear you. The background music quickly becomes extremely annoying, distracting, and intrusive. Many folks have hearing difficulties, thus while concentrating on your dialog we must also concentrate on tuning out the music; it is very frustrating. Your background music ruins an otherwise exceptionally good presentation.
@GraymanPOTA 9 күн бұрын
@@ricdonato4328 thanks for watching.
@Ncoastjack 10 күн бұрын
Nice video. I just bought a Raspberry Pi 4 8GB & a MMDVM Duplex Hotspot Module Dual Hat (the hat arrives tomorrow). Do I need to do anything to the RP prior to this? Or is everything more or less configured onto the SD card? Just making my plan of attack for when I get all my parts. I should t have to do anything g but physically connect hat to RP, follow steps in video & write everything to the card. I’m an IT guy, but first time playing with a RP. Thanks! UPDATE: I went ahead & configured my SD card and have it sitting in my RP now; just waiting for my hat to show up to slap it on, the power it all up & configure it as shown in the video. Good first video for me regarding DMR hotspot setup.
@sleeve8651 11 күн бұрын
I think Caveat emptor applies, when purchasing Toroids ! As buying from some places, you may not get what you think you're getting ! Fair Warning !
@GraymanPOTA 11 күн бұрын
100% agree. Stick with something directly from a supply house like Mouser, DigiKey or some place that is only buying from legitimate manufacturers, AKA not Amazon. There is no simple way to determine the cores composition.
@sleeve8651 11 күн бұрын
Mo' is better.......! ✌️😎
@briangarrison9518 16 күн бұрын
Thanks Tim! Perfect for my FT-891 Explorer backpack. Also, it was nice to meet you at Dayton Hamvention 2024. Take care
@GraymanPOTA 16 күн бұрын
Same here my friend. I just built 2 more of them to keep with my portable gear.
@DonauweIIe 18 күн бұрын
for 80m usualy about 7 snap on ferrites on the end of the coaxial cable are enough, close to where the connector on the cable is. the ferrite material has more resistence towards HF the higher the frequencies is, that means the cable doesn't need that many ferrite cores for 20m. how many snap on ferrites on a coaxial cable would be to many ? i guess the ferrite attenuates the HF in the inner conductor of the coaxial cable too, at some point there will be no more significant HF current in the inner conductor of the coaxial cable when there are to many snap on ferrites on the coaxial cable.
@danmclellan1088 21 күн бұрын
Would this help I just installed a 2-meter radio in my Jeep now I have static coming through when I turn on my LED headlights? Would these ferrite chokes help if I added them to my coax near the antanna end?
@TheFretman2 22 күн бұрын
I just ordered the JPC-12.
@rosswines 22 күн бұрын
Great video , many thanks for sharing a very relevant topic
@rosswines 22 күн бұрын
does the size of the ferrite make any difference ? or do they need to have the ID same as the OD of the coax. eg loose fit vs tight fit.
@brentcarlson3652 23 күн бұрын
Extremely helpful! Thank you for sharing how you use the PackTenna mast! '73 N0ATR
@GraymanPOTA 22 күн бұрын
I hope it helps.
@KD0QZR 23 күн бұрын
This is my next purchase as well! Hope you love it! 73 KD0QZR
@GraymanPOTA 22 күн бұрын
If there was an Easy Button for 3D printing, this is it. There is still a learning curve involved, but they do help take out the guesswork and reduce the amount of trial and error.
@truckinguy92 23 күн бұрын
That answered a lot of questions for sure. Thanks for the video! W2ITG
@GraymanPOTA 23 күн бұрын
Glad it was helpful!
@christianvargas2315 23 күн бұрын
I’ve got some money into 3d printing and it’s cheaper than ham radio hahaha 😅 love my heavily modded bed slinger but a bambu x1 would be primo!!
@GraymanPOTA 23 күн бұрын
I don’t know. It might be a toss up.
@parkerriverrat1 23 күн бұрын
great video, I have bunch of noise on my Icom 7300, what kinda ferrites are those and where to get them?
@Scott_AI5EF 24 күн бұрын
Great video!
@GraymanPOTA 24 күн бұрын
Thank you
@fetch872 24 күн бұрын
Smart choice
@TheBrokeHam 24 күн бұрын
One of us One of us
@MikeN2MAK 25 күн бұрын
Looks like a good mast! Nice job on the video too.
@GraymanPOTA 25 күн бұрын
I like it 🌮🌮🌮
@NickLesiak 25 күн бұрын
N0CKL 73
@NickLesiak 25 күн бұрын
Thanks man
@GraymanPOTA 25 күн бұрын
You're welcome!
@alvarogaitan2529 25 күн бұрын
fantastic job thanks terrific 73 from kb2uew
@GraymanPOTA 25 күн бұрын
Glad you enjoyed it
@aa3konthego 26 күн бұрын
Where did you get the K6ARK mic kit? Amazon has been out of stock for a while. Or am i just missing them?
@GraymanPOTA 26 күн бұрын
I looked at my notes and I bought this one from Amazon back in April. I have reached out to Adam to see if he has an ETA on more availability of the kits. Stand by 🌮🌮🌮
@Aramalas 27 күн бұрын
I am very patiently waiting for Hans to release the SSB firmware for the QRP Labs QMX. Once that is done I will complete the challenge =)
@GraymanPOTA 26 күн бұрын
Sounds like a plan 🌮🌮🌮
@GraymanPOTA 27 күн бұрын
Thanks for watching. If you have any questions or comments, drop them below 👇👇👇
@MikeN2MAK 27 күн бұрын
Nice work. Now you need to do a triple threat activation with it: voice, CW and digital.
@GraymanPOTA 27 күн бұрын
@@MikeN2MAK that is the premise of the challenge. More to come.
@BuddyLee 27 күн бұрын
Is fiddle a technical term? :)
@GraymanPOTA 27 күн бұрын
Why yes it is 🌮🌮🌮
@18wheelerham 27 күн бұрын
Can we do a lightweight QRO kit
@GraymanPOTA 27 күн бұрын
Absolutely.
@DavidBlackman-Wells-ob6fl 27 күн бұрын
So ive s8/s9of noise which i think is being picked up on my antenna when i disconnect the antenna i loose the noise completely so if i put the clip on beads on the coax i should loose most of it
@GraymanPOTA 22 күн бұрын
That is a good question and the answer is unfortunately, it depends. There is all types of interference, intentional and unintentional, that could be causing your issues. Taking intentional interference out of the equation for the moment, these types of filters suppress the ability for common mode current from passing to your radio by suppressing the magnetic field that is created on the outside of your coax when using an unbalanced antenna, feedline, or both primarily while transmitting. By suppressing that magnetic field it stops one vector of electrical noise from entering your radio, but that does not stop the interference that is directly received on your antenna. All kinds of electrical interference occurs in the wild from noisy appliances to electrical switches and outlets that are on their last leg. An easy way to isolate external interference is to power your radio with a battery and start turning off electrical circuits in the house to isolate a circuit with a potential noisy device and then start looking outside the home if there is still an issue. Noisy power lines, transformers or your neighbor's pool pump can all cause noise that can raise the noise floor and make reception difficult.
@XBKLYN 28 күн бұрын
Really interesting vid. Would love to see a comparison to the classic toroidal C-M filter, wink wink 😁
@darrellfreeman3577 29 күн бұрын
SO IF YOU KNOW WHO THIS LET THEM KNOW: FINE EXAMPLE FOR MY GRANDSONS AND GRAND DAUGHTERS.... THEY WONDER WHY I WANT TO PUT THEM THRU THIS, TAKING A TEST, GETTING LICENSE AND HAVING TO LISTEN TO THIS.
@andy2E0JIU Ай бұрын
Nice video,thankyou.New subscriber from uk 🇬🇧
@alvarogaitan2529 Ай бұрын
great video red rock congratulationes 73 from kb2uew
@TheBrokeHam Ай бұрын
😂😂😂😂
@jaredwellman1523 Ай бұрын
Thank you again for your support! The tabs on the Ultra case are there to keep it in position so it doesn’t slide around. The NanoVNA-H4 has those pieces that extend beyond the SMA ports so it stays nicely in the case without needing tabs. The TInySA Basic and NanoVNA-H case inserts also the tabs.
@GraymanPOTA Ай бұрын
You are welcome. Thank you for the clarification on the tabs for the insert.
@GraymanPOTA Ай бұрын
Thanks for watching. If you have any questions or comments, drop them below 👇👇👇
@techjohnc3379 Ай бұрын
To reduce wear on the SMA jacks on my NanoVNA and TinySA Ultra I have installed M/F SMA adapters. Unfortunately these cases aren't wide enough. John k0ebc
@GraymanPOTA Ай бұрын
Are they the BNC to SMA adapters?
@techjohnc3379 Ай бұрын
@@GraymanPOTA SMA to SMA. It keeps the threads on the units from being threaded/unthreaded every time they are used. Cheaper than having to repair the Nano or Tiny.
@GraymanPOTA Ай бұрын
fair enough.
@happyjack880 Ай бұрын
He's famous for this activity
@Sonicgott Ай бұрын
Why do people insist on being lids?
@N2ELS. Ай бұрын
Sad they take the test to get the license and all the money to purchase the HF radio and to act like a bunch of CB radio operators. Just seeing it for what it is.
@wa5azqhamradio Ай бұрын
Lah-hoo…zah-hur!
@mcarroll5885 Ай бұрын
For a coax common mode choke at QRP up to 50W field operation on my various antennas for 40m - 17m, I use 5 turns of RG-174 wound through a single split bead similar to the ones in your video. My bead is #43-mix ferrite (Mouser Electronics). I always put that at the antenna feedpoint. Works great. 73
@jeffwright6685 Ай бұрын
Mutts
@neillewis181 Ай бұрын
I actually heard this as it was happening. Just can't believe it! But I heard it live!
@GraymanPOTA Ай бұрын
The brown liquor 🥃 will make people do silly things every time.