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- Опубликовано: 13 сен 2024
- Playing with active antennas and ICOM R70, Thank you PA3AFC
Mini Whip HF go.tonyalbus.c...
Mini Whip HF go.tonyalbus.c...
Mini Whip HF go.tonyalbus.c...
Mini Whip HF pcb go.tonyalbus.c...
Mini Whip HF pcb go.tonyalbus.c...
Mini Whip HF pcb go.tonyalbus.c...
12v1AAdapter go.tonyalbus.c...
#miniwhip #HF
Hehe, the phrase "it dosen't mean the device is bad - it just means the quality control needs some extra attention" came to mind when i switched mine on for the first time. Exact same problem on the same model. Recalled watching this video 4-5 month back and just had to find it back to say; mine had the same issue. 😁 - Thanks for making these videos, part of the reason I had to get one.
hehe that is funny, thanks for sharing!.. they really do have a quality problem then . Good you remembered you saw it here.. thanks for letting me know. The device it good. enjoy!
Thanks, Tony. So many of these units have been sold with the label indicating a 12 volt center. I used a 12 volt negative center pin. There is a diode in the bias-tee which allowed this to work.
Thanks, yes i had many reports after this video many have this problem...while the description with the antenna say center positive.. easy fix.
I think the biggest problem with HF reception in residential areas is the noise coming from pretty much everywhere. All those bands are extremely polluted with noise from thousands of DC-DCs and SMPSs from household items. My iCom receiver gets immense amount of buzz pretty much everywhere from 5 to 30MHz. So moving the antenna away from the mains lines that emit all this noise, making it smaller to reduce capacitive coupling to mains lines AND shielding the signal path to receiver is what essentially makes this antenna work. The amplification that happens next to antenna essentially helps to overcome losses in the cable.
Thanks, yes agree.. i was surprised it works okey, specialy if you can not put a long wire..
Interesting and helpful analysis, and kindly delivered with lots of vocal-fry. Thanks for sharing.
Glad you enjoyed it!
Thank you for the very informative video Tony. And nice to see my dad's beloved Icom R70. What was wrong with it? After watching yor video I bought the same active antenna at Ali's site and before using it I opened the case to see if it has the same problem you encountered. To my surprise it had the same mistake with the wiring; better to correct it before burning fuses or testing current limitters in my power supply.... Keep up the good work Tony and be strong PA3AFC.
Thanks Marco, i think your dad already fixed it him self, there was some work done on the power supply, i just switched it one and waited a bit, i will do a recap in future, after so many years the caps will be unreliable. On the Active antenna, So they do have a quality problem..hmm well the antenna works fine after the little fix.
Your dads Antenna Analyzer is also there: ruclips.net/video/mXcmaLRMRO4/видео.html
I also subscribed to your channel, you have some cool pinball machines!.
Tony
I noticed you are referring to the secondary box as a "preamp" but I thought the active components were on the actual mini whip antenna itself and the secondary box was just a Bias-T to send power to the whip? Is it different with the kit you bought?
Yes are correct, thats how it works.
Here's an update on the ACTIVE antenna I bought, that looks exactly like the one you have. I checked the voltages along the route the power must travel, found I had no voltage going to the whip end, but had voltage at the switch area, and part way down the first circuit board to the last coil , before it heads off to the Antenna whip. I checked the soldering of the circuit, and found it was poor, so I redid the soldering very carefully, to make sure I didn't screw things up. Meter now showed, I had power at the whips coax connector (which is a BNC type connector). Without the whip connected, everything seemed to be working just fine ( had about 11 vdc between the BNC gnd., and the BNC center lead). I plugged in the BNC coax, and everything was going just fine. Had power at the end of the coax, that plugs into the Antenna whip. I shut the unit off, and connected the main antenna whip to the BNC coax, and turned the switch on. Went to check the voltages on the whip, and began seeing smoke, so I quickly shut the dang thing off. The small amount of smoke was coming from Capacitor "C6" on the whip's board. It also got the two coils on the first power board I had just worked on, regarding poor solder joints, quite warm, where they weren't warm while running, before I hooked up the main whip section to it. I double checked everything, from correct voltage, to correct polarity. Everything was hooked up properly, like it states it should be hooded up. I carefully retried putting power back on the circuit, and again the coils got quite warm. Dis connect the whip, and all's well, ran properly. I now see a small burn mark on Capacitor "C6", just before the diode on the whips board (ZD1), that sits inside the round tube. How this antenna was built, was very poor, and I would never buy another one. Buying an active Antenna like this one, that shorts out, and starts frying the whip's main board, is a total waste of money in my book. It could easily start a house fire, or cause a lot of damage to whatever it's hooked up to. I'm sure glad it wasn't hooked up to either my ham receiver, or my computer, or I'd be raising a pile of hell, you can be very sure about that. Going to try and get my money back from Banggood. It's either that, or it goes right into the garbage. I have been reading some other reviews of this product, since I found the short in the board, and others have had issues similar to what I had, specially poor, to bad soldering. I wouldn't advise anyone buying this product at all, less you want a BBQ roast. I won't trust them now, period!. Could damage other pieces of your costly equipment, while in operation. Every sold unit should have been checked for proper operation, before it was put out for sale on the market. I'm going back to a longwire antenna, and staying away from these stupid Active antennas. Not going to take a chance on it ruining my more expensive equipment. I'd be very careful with the one you have.
Thanks for feed back on this, man you had a terrible experiance, i wish the quality control was better at BG.
@@TonyAlbus Tried contact with Bangggod, about the issue, but got no reply back. Can't seem to get hold of anyone. I suggest not buying from Bangggod. If they won't stand behind their products sold, then don't buy from them.. I will never buy from them again in future.
@@waynedavies3185 Terrible when that happens.. yes not all my experiences with them are good too. i only buy ready products from then, not these loose BCP items.
@@TonyAlbus Thanks for your reply. I might add, the product I bought, is exactly the same as what you show here in your video. Guess I'll have to repair the unit myself. You'd think the company that builds them would have better quality controls in place. Having both solder issues, and parts issues, is not good for business when sold new.
@@waynedavies3185 Yes quality control must be better!.
Als je de mini whip vrij opstelt dan weet je niet wat je meemaakt 😁 vooral op LG en MG, de tijdsein zenders op 60khz en 77.5 khz zijn geen probleem.
Ja zeker!... ik moet het ff beter plaatsen.. ..
Thanks
Thanks Mark, Welcome!
BUENAS TARDES PARA CUANDO UNA COMPARATIVA ATS 20 VERSUS NASA TARGET H4. GRACIAS.
Hi JF.. the ATS20 is nice for fun, just because it runs on mostly one IC, but the Nasa or Target are more a receiver.
bigger display propper encoder..
hello is it better than MLA 30 + ?? thanks 73s
Hi, i don't have the MLA30 yet, it is on my list, i would think it is a bit better because it is directional, but then only in the direction it is pointing at, the other directions will be less good.
@@TonyAlbus thank you for answer 73s
I bought one, and the dang thing doesn't bring in a single signal on any band. Damn thing doesn't work. If I hook-up the HF receiver to my transmitter's long-wire, signals come flowing in, no problem. This antenna is nothing but junk, and a total waste of money in my book. Scanned 20 m to 80 m, and couldn't get a single signal anywhere. Won't buy from Banggood again in future.
Might add, I checked the wiring before I fired it up, and it was soldered correctly, before applying 12 vdc.
Thats terrible when that happens, Contact customer support and send it back, ask a new one, they should send a working one.
mine was from AliExpress.
If you lived in the UK you would very quickly get sick of that garbage on commercial am broadcast band. I am trying to filter it out but it's difficult to.
Yes those solar panels pollude also, but its RF