Date   

Not specifically ultralight, but worth knowing perhaps -- horizontal indoor loop v. 1.0

Jock Elliott
 

I also posted this on Radio Reference:

I have a problem: when my radio room was in the front of the house (on the east side), it was easy to run a feedline to a large RF-hungry SWL dipole with various stubs and feeders.

Now, however, with my "shack" moved to the SW corner of the house, any attempt to mount an outdoor antenna of any significant length raises potential safety issues because of nearby electrical lines.
.
Monitoring VHF/UHF is no big deal because of high-performance scanner antennas. HF, however, presents challenges. My main receiver is a Satellit 800, which has the guts of a Drake R8 but also has a large telescoping vertical antenna. It works okay, but I wanted more signal.

I've been looking at small loops and got some great recommendations on another thread, but then I had a thought: what if I turned the 8' x 12' room into a giant horizontal passive horizontal loop?

So I called a ham friend and ran the idea by him. Sure, he said, give it a try. He gave me 25 feet of 4-conductor phone wire. The better half helped me to strip it. I ran a single strand -- about 50 feet long -- around the perimeter and hooked the ends to the clip-in terminals on the back of the Satellit 800.

There's a switch on the back of the 800 that allows me to quickly compare the loop with the radio's built-in vertical antenna. And . . . it works! It pulls in more signal than the vertical, but there is not noticeably less noise on the higher bands -- 15 megs and above.

Tomorrow, I'll be checking the lower bands early, but so far, so good. I did check and it seems to work well on the lower bands as well.


Re: CCrane CCSkywave vs CCRadio2E (Warning! Informal Rookie Testing!)

Johnny
 

Hi Jay,

Thanks!  Very helpful!

I had not considered some of what you have written.  I will take these factors into account as much as possible next time I do my testing.  Great points. 


Johnny


Re: CCrane CCSkywave vs CCRadio2E (Warning! Informal Rookie Testing!)

radiojayallen
 

I have found that the main reason for different results like this is that local conditions are often the limiting factor in reception and mask the differences in the radios. For example, if the noise floor is too high you can’t hear the difference between a radio with an excellent RF dynamic range and one with a higher noise floor. Also, AM/SW sensitivity is best measured in a low noise environment midday when signals are weakest. At night with many stronger signals, it is much harder to see differences in many radios. It is also good to understand that RFI is not always audible as such…sometimes you may or may not hear outright buzzing or whistling but the radio will be desensitized overall. In my own house some locations are much more revealing of differences in radios…in other parts of the house they all seem about the same…understanding this is key.

In order to more accurately assess how radios compare it is essential to be sure local conditions are not the limiting factor.

 

Jay


Re: Common Interference Sources

Paul Blundell
 

That's a good idea, we do have a rangehood but it was not in use of a night time.

Paul

On Sat, 12 Jun 2021, 00:52 Gord Seifert, <gks61711@...> wrote:


   Check for a variable speed range hood fan.  Interference throughout the whole house in my case.


Re: CCrane CCSkywave vs CCRadio2E (Warning! Informal Rookie Testing!)

Michael Schuster
 

Certainly appreciate more controlled methodical testing (e.g. Jay Allen) but I find these these field observations to be very interesting too.

For one, it emphasizes that overall performance differences between some models can be really very small until you dig more deeply.

Second, always the possibilite influence of sample-to-sample variation especially in factory alignment and the impact on receive sensitivity.


Re: CCrane CCSkywave vs CCRadio2E (Warning! Informal Rookie Testing!)

Johnny
 

Hi Larry,

I will absolutely let you know, I may get one in the next few weeks.

I will be careful to not "imagine" that it is better than the Skywave, because it costs double!  ;)


Johnny


Re: Common Interference Sources

Gord Seifert
 



   Check for a variable speed range hood fan.  Interference throughout the whole house in my case.


Re: Common Interference Sources

Paul Blundell
 

That is possible, I will try to get some time over the weekend to look in to this more.


On Fri, Jun 11, 2021 at 10:03 AM Phillips <phillicom@...> wrote:
Fridge?


From: main@UltralightDX.groups.io <main@UltralightDX.groups.io> on behalf of Paul Blundell <tanger32au@...>
Sent: Friday, 11 June 2021 9:19 AM
To: main@ultralightdx.groups.io <main@ultralightdx.groups.io>
Subject: Re: [UltralightDX] Common Interference Sources
 
Thanks Tony.

The touch lamp was unplugged at this time. Last night I noticed that this was coming and going fairly regularly, I will keep looking for it.

On Thu, Jun 10, 2021 at 3:41 PM Tony Magon <temagon@...> wrote:
Hi Paul

I would check the touch lamp first

Regards

Tony



On Thu, Jun 10, 2021 at 3:05 PM Paul Blundell <tanger32au@...> wrote:
Last night we had a power outage due to some storms. The band was much quieter and these issues were gone. I noticed when the power came back on, it took a few minutes for it to get bad again, this I suspect shows that the issue is not so much with the power in general but instead something that takes a while to turn on / get working. I will keep looking in to it.



--
Paul



--
Paul


Re: Common Interference Sources

Phillips
 

Fridge?


From: main@UltralightDX.groups.io <main@UltralightDX.groups.io> on behalf of Paul Blundell <tanger32au@...>
Sent: Friday, 11 June 2021 9:19 AM
To: main@ultralightdx.groups.io <main@ultralightdx.groups.io>
Subject: Re: [UltralightDX] Common Interference Sources
 
Thanks Tony.

The touch lamp was unplugged at this time. Last night I noticed that this was coming and going fairly regularly, I will keep looking for it.

On Thu, Jun 10, 2021 at 3:41 PM Tony Magon <temagon@...> wrote:
Hi Paul

I would check the touch lamp first

Regards

Tony



On Thu, Jun 10, 2021 at 3:05 PM Paul Blundell <tanger32au@...> wrote:
Last night we had a power outage due to some storms. The band was much quieter and these issues were gone. I noticed when the power came back on, it took a few minutes for it to get bad again, this I suspect shows that the issue is not so much with the power in general but instead something that takes a while to turn on / get working. I will keep looking in to it.



--
Paul


Re: CCrane CCSkywave vs CCRadio2E (Warning! Informal Rookie Testing!)

Paul Blundell
 

Thanks for posting this Johnny, it is always good to hear how others find various radios and how they perform for them. I use my Digitech AR-1733 daily and find this works well for my needs.

Paul

On Fri, Jun 11, 2021 at 1:00 AM Johnny via groups.io <jlochey=yahoo.com@groups.io> wrote:
CCrane CCSkywave vs CCRadio2E

Last light I did a 30 min comparison of these two radios on both AM and FM on decent sized chunks of both bands, and honestly I was impressed with how well the Skywave kept up!  In most cases the Skywave reception was that of the 2E, but just a bit muddier and on some frequencies they were well matched.  Again, just my informal testing.  I always like pitting my radios against each other.

The Skywave is really becoming my favorite radio and although it is edged out on FM by the R-108 (BARELY!), I like the ergonomics of the Skywave better.

Hoping to get the Skywave SSB at some point in the future!


Thanks,


Johnny



--
Paul


Re: Common Interference Sources

Paul Blundell
 

Thanks Tony.

The touch lamp was unplugged at this time. Last night I noticed that this was coming and going fairly regularly, I will keep looking for it.

On Thu, Jun 10, 2021 at 3:41 PM Tony Magon <temagon@...> wrote:
Hi Paul

I would check the touch lamp first

Regards

Tony



On Thu, Jun 10, 2021 at 3:05 PM Paul Blundell <tanger32au@...> wrote:
Last night we had a power outage due to some storms. The band was much quieter and these issues were gone. I noticed when the power came back on, it took a few minutes for it to get bad again, this I suspect shows that the issue is not so much with the power in general but instead something that takes a while to turn on / get working. I will keep looking in to it.



--
Paul


CCrane CCSkywave vs CCRadio2E (Warning! Informal Rookie Testing!)

Johnny
 

CCrane CCSkywave vs CCRadio2E

Last light I did a 30 min comparison of these two radios on both AM and FM on decent sized chunks of both bands, and honestly I was impressed with how well the Skywave kept up!  In most cases the Skywave reception was that of the 2E, but just a bit muddier and on some frequencies they were well matched.  Again, just my informal testing.  I always like pitting my radios against each other.

The Skywave is really becoming my favorite radio and although it is edged out on FM by the R-108 (BARELY!), I like the ergonomics of the Skywave better.

Hoping to get the Skywave SSB at some point in the future!


Thanks,


Johnny


Re: Common Interference Sources

Tony Magon
 

Hi Paul

I would check the touch lamp first

Regards

Tony



On Thu, Jun 10, 2021 at 3:05 PM Paul Blundell <tanger32au@...> wrote:
Last night we had a power outage due to some storms. The band was much quieter and these issues were gone. I noticed when the power came back on, it took a few minutes for it to get bad again, this I suspect shows that the issue is not so much with the power in general but instead something that takes a while to turn on / get working. I will keep looking in to it.


Re: Common Interference Sources

Paul Blundell
 

Last night we had a power outage due to some storms. The band was much quieter and these issues were gone. I noticed when the power came back on, it took a few minutes for it to get bad again, this I suspect shows that the issue is not so much with the power in general but instead something that takes a while to turn on / get working. I will keep looking in to it.


1611KHz - Mixed Signals

Paul Blundell
 

Today at lunch time I was having a bit of a listen (not serious DXing) of the bands, I was in my car at the time due to the weather.
I often like to have a listen to the SEN station on 1611KHz as they have some good sports related information and stories. 

We have four stations on 1611KHz within 300km of me, these are all SEN stations, I noticed that under the main station was a second signal, it was hard to hear but this didn't sound like SEN and I doubt that any of the three other stations on this frequency would be carrying different programming to each other.

Video: https://ultralightradiodxing.blogspot.com/2021/06/1611khz-mixed-signals.html

Any ideas?

Paul


Re: Multi-Use Radio DXing Kit - June 2021

Paul Blundell
 

It is always interesting to hear about the different radio services from over "your side of the world", here we have 27MHz CB and a UHF CB service which is 80 channels around 477MHz.


On Wed, Jun 9, 2021 at 2:23 AM Peter Laws <plaws0@...> wrote:
Lol!  Unrelated to your topic, the Subject: line made me do a triple
take!  In the USA, Part 95 of the FCC's rules include several
"personal" radio services.  27-MHz CB is one, UHF GMRS is another, UHF
FRS (taken from GMRS and license-by-rule like CB), and a couple
others.  In one of the FCC's periodic episodes of "we don't want to
enforce the rules, but we are happy to change them to prevent us
having to do that" they created a new service at VHF.

They took 5 frequencies in the 150-MHz range where vendors had been
selling utility radios for decades with only the briefest mention of
an FCC license -- think "blue dot" and "green dot" -- and created a
new sub-part ("J") under Part 95 and called it the Multi-Use Radio
Service.  Like CB and FRS, it, too, is licensed by rule.

So when I saw your subject, I assumed you were DXing on VHF ... it's
Sporadic E season on the northern half of the planet at least, so
until I looked at your message this all made complete sense.  :-D



--
Peter Laws | N5UWY | plaws plaws net | Travel by Train!







--
Paul


Re: Multi-Use Radio DXing Kit - June 2021

Peter Laws
 

Lol! Unrelated to your topic, the Subject: line made me do a triple
take! In the USA, Part 95 of the FCC's rules include several
"personal" radio services. 27-MHz CB is one, UHF GMRS is another, UHF
FRS (taken from GMRS and license-by-rule like CB), and a couple
others. In one of the FCC's periodic episodes of "we don't want to
enforce the rules, but we are happy to change them to prevent us
having to do that" they created a new service at VHF.

They took 5 frequencies in the 150-MHz range where vendors had been
selling utility radios for decades with only the briefest mention of
an FCC license -- think "blue dot" and "green dot" -- and created a
new sub-part ("J") under Part 95 and called it the Multi-Use Radio
Service. Like CB and FRS, it, too, is licensed by rule.

So when I saw your subject, I assumed you were DXing on VHF ... it's
Sporadic E season on the northern half of the planet at least, so
until I looked at your message this all made complete sense. :-D



--
Peter Laws | N5UWY | plaws plaws net | Travel by Train!


Re: Common Interference Sources

radiojayallen
 

Motion detector lights are a big offender. I had to replace a garage door opened because the motion detector light wiped out almost all AM and SW through the entire house, although usually it is a bit less severe than that. In my new house, several appliances are RF noisy...my washing machine makes RFI but luckily only while it is running.

I also once had a very odd RFI issue that was very hard to find.. After turning off circuit breakers I knew which circuit the culprit was on, but after turning the breaker off then back on again the noise wouldn't come back for anywhere from an hour to a day. It turned out to be an audio processor (a DBX 119) which was plugged into an outlet strip...either item alone was OK but when plugged in together they created noise. I got rid of both since I no longer trusted them.


Re: Sangean DT-250 ULR Receiver

Jorge Garzón
 

I guess both are the same with different names. Here, DT-250 can just be bought in silver colour. 


Re: Common Interference Sources

Paul Blundell
 

Good question Andy and not something I have seen here (Australia). I do wonder what "standard" they use to be able to claim this?

Paul

On Tue, Jun 8, 2021 at 12:53 PM Andy - Arlington TX <andy.j1s@...> wrote:
The Home Depot website lets you search for LED light bulbs with the feature "No Electromagnetic Interference".

Does anybody know if that makes a difference for radio reception?

Is there a legal standard for being able to claim that?

By far and away, most of them are Phillips brand (121), then Hy-Lite (41), then a couple more brands with 1 each.

-- Andy - Arlington TX



--
Paul

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