Chameleon CHA-RXL Stealth Receive Loop Antenna. Made in the USA!
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- Опубликовано: 3 май 2021
- Chameleon is releasing a new receive only loop, the CHA-RXL. Lets get it on the roof, test it out and talk about why receive loops can be pretty awesome.
Loop can be found here: chameleonantenna.com/shop-her...
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Lifelong industrial electronics tech here. We had a rule when working in high places. ALWAYS take at least one extra of each type of fastener for dropping. 😀
Very cool video. was considering getting one of these antennas. I am now convinced. Thanks for sharing.
Good video.....id recomend a rotor. I'm a big fan of loops for transmit as well. I love my alex loop for portable qrp because it's so simple for field and vacation operations......no radials needed is a plus plus. It keeps it simple, 73
Great video as always!
FB presentation, OM. You could combine it with another rx antenna and use the DXE-NCC-2 or a MFJ 1026 to electrically steer it. Maybe you already did a vid of one of those ... new to your channel and enjoying it!
I'm really looking forward to seeing this paired up with your new 7610.
73 W6XYZ
I need this!! I have a cheap mla 30 loop this would be a great upgrade
I love loops for use in high noise environments! A small TV-antenna rotator might be the next upgrade. Even the lightest-duty one (RCA, Magnavox, etc.) should be able to handle that small load.
I like that idea!!
Leah does too! (Probably?)
Interested in seeing a review after you have used it for a while. I also live in a high noise Urban Environment and always interested in something to help with receive.
I'm sold on active receive loops. I have a cheap MLA-30 in my attic and it works great with the RSP1A. I can hear FT8 from Australia to Russia here in the 'burbs. I highly recommend everyone have some type of receive loop for listening.
I recently bought an RSP1A and a YouLoop. The YouLoop seems to be good for VHF and medium (AM broadcast), but I haven't picked up much on lower bands (but I'm new to all this and stumbling my way around it). The YouLoop says its for HDR SDRs and I think the RSP1A doesn't quite cut it. Now I'm looking into better antennas. I'll have to look into the MLA-30.
@@SDWNJ The RSP1A is quite capable for VHF to HF, but it is dependent on the antenna. I'm not too familiar with the YouLoop, but it looks like it's a passive antenna, whereas an active receive loop uses a power injector (via it's coax) to amplify the received signals, otherwise it's pretty deaf. In my case, I just have Bias-T enabled on the RSP1A powering the MLA30 instead of it's included USB power adapter.
@@HammockRadio Yeah, the issue is with the YouLoop, which seems to be a better match for AirSpy's SDRs than with the RSP1A. BTW, how do you have the MLA-30 mounted? Being that loops are directional, do you have an arrangement that allows for rotation or is it static?
@@SDWNJ Mine is statically mounted in the attic. It's roughly facing E/W so I can null out a transformer south of my house. You can see it's receive capability by displaying the signals received by my callsign on PSKReporter for FT8. I have it listening to 40M 24/7.
Josh, it would be very interesting to see what a Tv rotor could do for your loop, since it is quite directional. Always enjoy your videos and I always learn something from your presentation. Greetings from Ontario, Canada. Barry VE3BMY.
good video thanks
Interesting product, but a bit pricey. I'd love to see an active loop shootout video - maybe with the MFJ-1886, the MLA-30 (and maybe others I'm not aware of). I'm not a ham, but am exploring the receive-only side of things with SDRs so I'm very interested in receiving antennas.
I like loops...
Great video man, thanks.
Been thinking about a loop for awhile.
I love that shirt!
Good for quad racing too
Hi can you check the loop on the vlf frequencies ?
I have so many antenna questions!
I have so many answers
Good evening. like the information about the receiving antenna , what do you think about hooking up to 73002 a receive antenna there is a way you can do that. is it worth it. thank you
I have that same shirt!
When you were installing the loop, seems like it was aligned east and west while the hole of the loop is facing north and south.
Ok?
Didn't you read QST on safety harnesses for tower & roof work? OSHA compliant roof harnesses are sold cheap at the big box stores.
I know a surgeon who fell off his roof last year. If he's lucky he'll be able to go back to work later this year.
When I had new shingles put on this year the company actually also installed hooks into the roof! that you can connect safety harnesses too. I was impressed.
Dude your on their website for the loop, Sick!! Now how to get a vid over to skylines website.
I have been playing with wide band active RX loops lately this should be cool!
I recently created a modified MLA-30+/YouLoop hybrid that has been working very well, but my guess is mostly due to loop being doubled size electrical by the wiring of the YouLoop yada yada...
73 de N2NLQ
Can you tell me the differance between the 2 section demo loop on sale and the Single loop? Besides 100.00 Are they both metal?
I wouldn't say falling off the roof would be the worse thing. Landing on the ground after falling off the roof would be.
Lol
Well I would say that the CHA RXL will resist a pretty STEEP fall with really affecting the internal components. We're building things for the military first - then after it should be ok!!
Just one excellent reason for the IC-7610. Glad you picked one up. Beautiful radio. No reason to have to justify your radio purchases to anyone. The IC-7300 is still the best bang for the buck for new users wanting a home HF station. But we all evolve in the hobby and eventually require more. And the loop is doing it's job pretty well. I have a W6LVP but have yet to put it into action. In fact, I bought an FTDX-10 in December and still don't have the antennas up to be able to transmit on it. And I'm already thinking I would have rather had an IC-7300 (or even an IC-7610).
Then think again. Yaesu can handle and reject noise far better than either Icom you mentioned and the DSP is God level. You've bought the right rig. Sort some antennas out and you're good to go.
@@johnratcliffe6438 We all have our opinions and favorite brands, no need to go pushing your beliefs on other people who don't agree with them. I don't really have a favorite radio manufacturer, I like Icom HF radios, Yaesu HTs, and I also have a few Kenwood mobiles that work well.
I will always have fond memories of Yaesu, since my first HF rig was a FT-891, but if given the opportunity I would snap up a 7300 or 705. Or a TS-590 for that matter. It's all a matter of personal preference, we all have different opinions.
@@andrewhamop6665 Who rattled your cage? I am reassuring the chap he has made the right purchase. It isn't opinion, it's fact. Go and white knight somewhere else.
@@johnratcliffe6438 I'm sorry if I came off as angry or something. I was just trying to state that if someone were to rethink their purchase because of a key feature or design, that's their choice. I hold hams to a higher standard then regular internet people, and if he wants to exchange his under utilized FT-DX10 for something else that he will personally enjoy more, that's rightfully his choice. That's not to say, that one is any better or worse than the other, just different. No need to get angry about it.
@@andrewhamop6665 His FTDX10 isn't under utilised, he said he's never used it at all because he has no antennas for it yet. Absolutely it is his choice, but he should make an informed decision and I stand by my comments. I'd never get rid of the FTDX10 for either 7300 or 7610. Go watch some comparison videos for yourself and you'll see why.
Hey Josh really enjoyed the video and also listening to the receiving part of the loop, amazing. And you did a great job on the installation. But I did hear the difference even though this is a video between the stepper and the Infed and the loop antenna. Who knows you might start enjoying listening to shortwave now if signals come in that strong.
WD5ENH
Steve
any plans to put a small TV antenna rotor under the loop so you can pea/reject signals?
Indeed!
KFI love it.
Have you tried comparing it to your recieve ground loop?
Nice video ... and well scripted and edited. I think you should have used the same RF Gain for each, as that makes for a more direct A-B apples-to-apples comparison between the three antennas. Just a suggestion ... no big deal ... maybe you should spell out C H A as you spell out R X L ... I am a stickler for consistency. BUT no points off for THAT !! Happy trails, OM. 73 JR
I would mount the loop of the mast above the tribander so you can steer it with the yagi.
That’s a pretty good idea!!
Would the F-Loop 3.0 perform the same as the RX Loop?
It works for tv too lol. Leah's not buying that @Josh. Jk. Interesting video. Like more info on antennas. As I'm waiting to get my new station together. #HRCC #HRA
I live not far from you in Tustin, OC. For shortwave, would you orient it the same as you have described?
My next upgrade will be to acquire a small tv antenna rotor and then I can tune the antenna in for the nulls.
Lets get it up oops wrong channel.cheers bud uk.
Hi, Josh - Have you had any problems with RF overload on this from your transmit antenna? I have the one with the new preamp, but they warn that the preamp can be damaged by nearby transmissions >100 W. Have you been able to transmit using your amplifier without damaging the preamp in the Chameleon? Thanks!
Bob KJ6GEU
This shit is so above my head.
Audio clipping from about 6:40 on while looking at radio.
"This may be overkill."
"There is no overkill. There is only open fire and I need to reload."--Maxim 37 of The Seventy Maxims of Maximally Effective Mercenaries.
Yes -- I believe it was Hiram Maxim that said 'turn it up to 11' and 'everything louder than everything else'.
Is it necessary to re-tune the loop antenna between bands? If so, can it be done remotely?
No tuning. It’s just for receive.
Stop it!! now I'm looking at loop antenna's :)
Living in an apartment, is it something I could setup indoors?
Yes, but how effective it will be based on the building and local noise.
Isn't most noise going to be below about 14Mhz anyway
The wife might think the loop is too visible... beside the StepIR lol!
So, is that loop directional? Or is that only on transmit that that happens on?
Any of the receive loops (like W6LVP also) are directional. The nulls are where one might normally think the strongest signals are. If you were looking down on the loop, the nulls are at right angles to the loop (off the sides of the loop). So if you are standing level with the loop and your eyes looked "through" the loop, you'd be looking at a null. Nulls through the loop and maximum reception off the sides of the loop. I imagine this is true in varying degrees depending upon the frequency you are monitoring and with taking into account the designed band(s) of the loop..
Wouldn't it have even better reach if you hung it with horizontal polarity? Also, don't BNC connectors have more bandwidth? I am your student so I'm asking not telling you. Thanks for giving me a great hobby during covid.
Better for horizontal is subjective but could work well.
BNC is generally considered to handle higher frequencies without loss over uhf connectors. In this case though, since the antenna maxes out at 30mhz. It’s kind of moot.
A big ear you have their :)
Diversity receive? You've ordered the K4?
Nice upload, thanks.
Not the K4
I'm glad Josh put this video up. I have a K3S with diversity receive capability, a high noise floor at my QTH, and this RX loop already on order from Chameleon. My biggest concern (and I'm not sure if Josh addressed it; I still have a few more minutes of this video to watch) is positioning the loop within 25' of a TX antenna operating at or above 100W.
Josh, I wish you had done some testing at ground level (at or slightly above one loop diameter above the ground) before roof mounting. Maybe when you take it down to install that rotator...
Josh, Any update on the Loop. Do you still have it? Did you get a rotor?
I did. But I’m dealing with more RFI so not much reason to show this off until it’s cleaned up.
Loop less noisey would the loop do better on a roter ???
On a rotor you can use the the bi-directionality to hone in on signals. I’ll getting a small rotor at some point.
Do you think it would be good to install a rotor to the antenna for better positioning? I noticed that you didn't install it to a rotor.
I said in the video that I would install a
Rotor.
@@HamRadioCrashCourse Sorry, I didn't catch that. Thanks for the reply. 73's!
Slightly off topic, but in regards to your noise...I have a similar situation, and I have identified a broad banded (1.8 - 28mhz, bad on 7mhz) noise source from my neighbors house. I suspect it to be some light wiring in his garage. I narrowed it down using some direction HF receive antennas. Let's just say he's not quite motivated to receive my assistance in remediating, I have even offered to pay for whatever solution. What would you do? The impact doesn't shut me down on these bands, but it definitely brings the noise floor up over weak stations. It's also 24x7. The only thing left to do that I know of is file a complaint with the FCC, and I have no idea what would happen with that.
I'd say you've given him every option to resolve it rationally, and you've politely informed him of your situation. And like you said, you even offered to pay him to fix the problem. Inform him that it is your right to file a complaint with the fcc, and if he laughs or dismisses that, file the complaint. Unfortunately I don't think there's much else you could do in this situation.
I’d try to sweet talk the neighbor one more time. Maybe if you show him the noise which is common with those led lights? Maybe explain that you go through steps to ensure your transmissions don’t screw with his electronic devices? Maybe bring him a six pack to smooth it over? I’d be super hesitant to turn it negative - you will never win even if you win, know what I mean? Other than that, maybe borrow a linear and operate heavy for a week and see if you can turn him into a Rf mitigation believer?
@@ChrisN8PEM Hah, that sounds like a good idea, I guess I'm just assuming most people won't care. Hey, if he has an outdoor DTV antenna, putting out enough power should be able to completely blank out his TV right?
Lol. I was kinda kidding on that - but you bring up a great point. Point out that you think those lights are putting out harmful Rf, physically show him the proof, and the. Remind him that everything from your ham radio to his Wi-Fi and DTV can be affected by bad Rf. I know the Wi-Fi is in GHz and it’s a real stretch - but 10,000 foot view here to hopefully find a solution.
@@Chugwater_Cowboy Eh, that's not actually true about the RFI. It specifically says they regulate licensed frequencies, and incidental radiators. Now, whether or how they act on that, I have no idea. It's possible they'd blow me off entirely. And it's kind of hard to filter out noise that comes in on your antenna on the frequency of interest. BTW, antenna, 50 bucks, maybe? Fixing a bad ballast, also maybe 50 bucks?
Great.... More money.. At night we can get KFI up here in Washington
EVERYBODY west of the Mississippi knows 640 AM is KFI. And some east of there I bet.
I assume that it oriented off the flat side, though you didn't say. Al. K0AMA
I would pain that loop because it does stand out, unless you live in a place with a lot of white houses. i would add some camouflage- colored stripes or pots of green and brown.
or you could mount it horizontally get more noise reduction and not need a rotor, as it would then be omnidirectional.
AM 640 is one of the old So Cal monsters all 50 kWats.
Yeah and it’s maybe 25-30 miles from my house 😬
"Leah didn't see it" - and for some reason she seems to be unsubscribed from the HRCC YT channel now.
Loops, ideally need to be used with a rotator to get the best results.
This is a very interesting idea and thanks for the video.... But man, almost 500 bucks for a receive only antenna? Not for everyone, I suppose.
We're trying to get the price as low as we can - but quality cost most $$$. EVERYTHING IS 100% MADE IN THE US and I'm almost sure that competition aren't going to beat us on performances and design! Why? Well everything has been designed with the military needs!!
How is to sent out ?
In a bog square box.
BNC connection is to make it obvious not to transmit through it.
Try g5rv comparison
G5rv versus the loop? That’s ok. I used to run a g5rv. I’ve moved on.
$500 for a rx only antenna. Guess I need to learn how to build one.
*THIS IS TO "ROTOR" USE ... !! NO ROTOR NO USE ..!!*
*HAVE A GOOD DAY .. (remember to take it inside ... before next "wind"..hehe)*
Lol. Yes a rotor is on the list of upgrades. Implying you can’t use it without a rotor is kind of ridiculous though.
Good lord that is one expensive rx only antenna!!!
Engineered, fabricated and assembled in the US costs. Quality costs.
End fed is compromise, not antenna
Uhhhh. This is a video about a receiving loop.
Desperately needs a rotor motor mount.
It’s got one. New video coming soon!
I love freefall, but landing sucks.
First world ham problems “just have this extra roll of LMR 400 laying around”.
Everyone repeat after me - “Josh will not convince me to buy a 7610. Josh will not convince me to buy a 7610”. Lol.
Hang on buddy. 🤣
For $500+ it should do more than just receive. It doesn't even have a way to turn it if you put it up on a roof.
Honest question. What are you basing your opinion on cost off of?
If you itemize the components required to build it you will find that you can make your own for under $50, not $500+. The schematics for this one have been on the net for a long time. There's no reason for these to cost so much.
That thing is not cheap yikes kind of surprised me I was thinking around $250ish not $490
I don't get this, $490.00. What is inside the box? Building a transmitting Magnetic Loop antenna and the variable vacuum capacitor was around $250. This is recieve only...I am all for capitalism but still, whats in the box???
Gwen Paltrows head.
@@HamRadioCrashCourse I have plans for a Transmitting Magnetic loop but i really want to know whats in the box. Is it just a ballun or coiled wire? Does her head come with the exploding "V" candle from her Goop company?? Also, is there an interface to connect a amp to the IC-705. Waiting for R & L here in Ohio to open back up to purchase that radio, I figured I can get an iPhone 12 Pro Max whats another $1300 for something else I can talk to people with!!!!