¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date
Locked Re: What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
Alan, Thanks for the time you spent on your extensive write up. Much appreciated. To answer your questions/advices : 1. There is a steel reinforced concrete floor between the Baby Loop and the
By frans.akkermans@... · #17048 ·
Locked Re: What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
Not so much a propagation concern as keeping the near fields away from people. The voltage on the tuning capacitor will be of the order of many kilovolts? with a current of >10 Amps at around the
By Alan · #17047 ·
Locked Re: What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
I not put anything near the loop. I would only build something below the loop. A platform of 1.5 high where the 2 meter pool is standing on. And then the loop will sit on the pool. The loop will then
By frans.akkermans@... · #17046 ·
Locked Re: What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
Steve, Thanks for your long response. On the rain. Yes I was reading about this. The manufacturer even recently modified one model by adding a cover on top of the capacitor because rain got too much
By frans.akkermans@... · #17045 ·
Locked Re: What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
I am putting in on my own part of the roof. That is a penthouse. Nobody has access to it unless on purpose my neighbour climes over the wall which separate his and my appartment. And it is to top of a
By frans.akkermans@... · #17044 ·
Locked Re: What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
And definitely don't located in a place where people can touch it. The voltages on any transmitting loop can be astronomical and possibly lethal. As a teen I put up a loop on the back porch. My mom
By Tom - VE3PSZ · #17043 ·
Locked Re: Chameleon CHA RXL PRO (Receive Loop)
You may better understand things from my perspective, if you take a look towards the bottom of this webpage. https://g8jnj.net/broadbandhfvertical.htm Regards, Martin
By Martin - Southwest UK · #17042 ·
Locked Re: What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
The other problem in the UK (and the USA too) is trying to comply with OFCOM RF exposure limits, which is especially problematic with efficient tuned loop antennas. Folks usually can get away with
By Martin - Southwest UK · #17041 ·
Locked Re: Chameleon CHA RXL PRO (Receive Loop)
Well said Martin. I am not a designer or manufacturer, but a consumer. I have built my own loops but not the amplifiers and have two CCW LAA amps. I agree wholeheartedly with what you have
By Tom Crosbie G6PZZ · #17040 ·
Locked Re: Chameleon CHA RXL PRO (Receive Loop)
Personally I still wouldn't buy one from them for all sorts of reasons, some technical and some ethical. Chavdar, LZ1AQ, was good enough to openly publish his design and related information free of
By Martin - Southwest UK · #17039 ·
Locked Re: What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
Hi Frans, Although I do not own a Baby Loop (price outside my budget), nor am I an expert, your questions were the same as mine when I was looking at the Cirro Mazzoni products. I wrote to Cirro,
By Steve Richards <steve.g4hpe@...> · #17038 ·
Locked Re: What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
I would think any material you add near the loop makes things worse. My understanding of the manual is that the loop should be 1.5m away from other objects. 73, Mike AF7KR
By vbifyz · #17037 ·
Locked Re: Chameleon CHA RXL PRO (Receive Loop)
If you look very closely at the picture of the PCB in their ad, you can clearly see that the circuit has now been changed to an LZ1AQ version. I guess after Steve's poor review of the original, they
By Tom - VE3PSZ · #17036 ·
Locked Re: Chameleon CHA RXL PRO (Receive Loop)
I have to reply on this - the unit looks nice, but I have to also agree that for $525USD, you can get a LOT of loop with more flexibility. I am currently using the Wellbrook ALA-100LN-M. This unit is
By Darren Hennig · #17035 ·
Locked Re: Chameleon CHA RXL PRO (Receive Loop)
Don't buy it.
By Martin - Southwest UK · #17034 ·
Locked Re: Chameleon CHA RXL PRO (Receive Loop)
In my opinion the price alone should stop anyone buying. I know they have to make a profit..but $500 plus! Atleast the mla30 ( rubbish) is only $30 or so. Or a ccw loop much much better than mla30.
By Simon · #17033 ·
Locked Re: Chameleon CHA RXL PRO (Receive Loop)
Posted by a well known member of this group... /g/loopantennas/message/14907?p=%2C%2C%2C20%2C0%2C0%2C0%3A%3ACreated%2C%2Cchameleon%2C20%2C1%2C0%2C83874875 Roger
By Roger Need · #17032 ·
Locked Chameleon CHA RXL PRO (Receive Loop)
Does anyone have any experience with this $525.00 (list; $394 at Ham Radio Outlet, though out of stock) receive-only loop? https://chameleonantenna.com/shop-here/ols/products/cha-rxl-pro Thanks.
By Andy Kerr · #17031 ·
Locked What should the dimension be of a platform I am building on top of my roof for a babyloop #photo-notice
I need to build a platform on top of my apartment building to get 360 degrees clean space for my new babyloop. My babyloop is a 1 meter loop. The platform will be at the corner of the building. It
By frans.akkermans@... · #17030 ·
Locked Re: Regenerative receivers and loop antennas
Oh I also forgot to ask Looking for a design for a 1:1 isolation transformer Qro from 160-40m.. Have 2 240-61 cores suitable but not sure on amount of L to wind on.( ptfe silver plated wire)
By Simon · #17029 ·