Date   

Re: Tassie Changes

Dan Merta
 

Thanks for the heads up on this. On 558kHz you should be able to hear 6WA from Wagin at night. 
I'll try to make some recordings of 7BU & 7AD before they are shut down. 


Re: Ferrite antenna design in older portable radios

mediumwavedx
 

I've tried both ways of winding. If I remember correctly, I get better signal pickup with a winding that is the full length of the ferrite.
 
That said, I'd be curious to know the purity differences of the figure-8 pattern when the coil is short versus full length. Which is the better nuller?
 
Bill
SW Arizona
RADIO-TIMETRAVELLER
https://radio-timetraveller.blogspot.com


Tassie Changes

Paul Blundell
 

In the next couple of weeks 7BU is going to FM and will be on 100.9. 7AD will be on 98.9FM.

I will be keeping a close ear on 558kHz and 900kHz during the change to see what stations them shutting down will allow me to hear. 

--
Paul - Moderator
UltralightDX


Re: Jay is back reviewing! -FARMERIK

Vimal
 

You guessed correctly!!

On Tue, Mar 5, 2019 at 2:45 AM Rik <farmerik@...> wrote:
My guess is it was never meant for North America. I don't know what other parts of the world have MW up to 1710 KHz. I would guess it is intended for Asia, Africa or the Middle East, but that is just a guess. That may also be why 2 D cells which probably power the radio for around 350 hours, so places with out reliable electricity.

It's like a trip back in time.- FARMERIK


Re: Jay is back reviewing! -FARMERIK

kevin asato <kc6pob@...>
 

Except for one broadcast station at 1650KHz in Southern Los Angeles County, everything I hear in the extended ban is Part 15 and therefore DX past a couple of miles - local community service broadcast, traffic information, etc ! They tend to cluster around 1630 so it's a challenge to pick them out.
73,
Kevin
kc6pob
--------------------------------------------

On Mon, 3/4/19, gary_thorburn <gwt@...> wrote:

Subject: Re: [UltralightDX] Jay is back reviewing! -FARMERIK
To: main@UltralightDX.groups.io
Date: Monday, March 4, 2019, 2:28 PM

The "extended"
AM (MW) band (including 1610-1700 kHz) was approved for
North America in 1988.  Receivers typically did not tune
beyond 1600 kHz before that.  The first extended band
station in the US went on the air in 1995.  It was fun
DXing above 1600 when there were very few stations there!


Re: Jay is back reviewing! -FARMERIK

gary_thorburn <gwt@...>
 

The "extended" AM (MW) band (including 1610-1700 kHz) was approved for North America in 1988.  Receivers typically did not tune beyond 1600 kHz before that.  The first extended band station in the US went on the air in 1995.  It was fun DXing above 1600 when there were very few stations there!


Re: Jay is back reviewing! -FARMERIK

Paul Blundell
 

That sounds like an interesting radio. 


On Tue, Mar 5, 2019 at 4:14 AM Rik <farmerik@...> wrote:
Yes, it's not an ULR, but it is interesting to me anyway. I have a collection of a dozen or so 2 D cell portables.

https://radiojayallen.com/panasonic-rf-562d-retro-design-am-fm-sw-portable-radio/



--
Paul


--
Paul - Moderator
UltralightDX


Re: Ferrite antenna design in older portable radios

Rik
 

A lot of European radios from my collection have unusual windings, and excellent performance, including radios with coils at both ends of the ferrite.
Some time ago I looked for internal  Online photos of PL-600 and PL-450 radios which are sharply directional. I could not see anything special about the windings on the ferrite.
I wish I knew!- FARMERIK


Ferrite antenna design in older portable radios

gary_thorburn <gwt@...>
 

I've accumulated portable radios dating from the 1950s to the present. I've noticed that in general, older radios were usually wound with the turns widely spaced.  I have an old 8-inch ferrite antenna with turns spread out nearly its entire length.  Modern radios typically have the turns closely spaced on a paper form positioned on the rod.  Anyone have ideas about what the difference would be?  I would expect the wider spaced turns would result in less capacitance in the coil, which I think would be a good thing.  But a closely wound coil on a paper form permits sliding the coil on the rod, positioning it for correct inductance. This permits some optimization at assembly time.  Incidentally, I have a working Philco portable, model B-631, from about 1954.  It has a 7-inch long, 17mm diameter ferrite, wound widely. (NOT an ultralight!)  A Philco ad for this radio claimed that it was the first commercially available portable using a ferrite antenna, which they called the "Magnecor".


Re: Jay is back reviewing! -FARMERIK

Rik
 

My guess is it was never meant for North America. I don't know what other parts of the world have MW up to 1710 KHz. I would guess it is intended for Asia, Africa or the Middle East, but that is just a guess. That may also be why 2 D cells which probably power the radio for around 350 hours, so places with out reliable electricity.

It's like a trip back in time.- FARMERIK


Re: Jay is back reviewing! -FARMERIK

Peter Laws
 

On Mon, Mar 4, 2019 at 11:14 AM Rik <farmerik@...> wrote:

Yes, it's not an ULR, but it is interesting to me anyway. I have a collection of a dozen or so 2 D cell portables.

https://radiojayallen.com/panasonic-rf-562d-retro-design-am-fm-sw-portable-radio/
Interesting radio. I wonder why it doesn't cover the entire "Standard
Broadcast"? Maybe they found a container of pre-1980s analog tuners
and decided to build a product instead of land-filling them?


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


Jay is back reviewing! -FARMERIK

Rik
 

Yes, it's not an ULR, but it is interesting to me anyway. I have a collection of a dozen or so 2 D cell portables.

https://radiojayallen.com/panasonic-rf-562d-retro-design-am-fm-sw-portable-radio/


Re: Blog Gone

Paul Blundell
 

I will just update my links and focus on my new one. 


On Mon, 4 Mar 2019, 5:32 a.m. Phillip Fimiani via Groups.Io, <myamiphil=yahoo.com@groups.io> wrote:
The phrase is Indonisian... "There is nothing here." So they dumped it... Wonder if blogspot.com can delete it?

 
Best Regards
Phil
KD2HTN / WA2069SWL

______________________________

On Sunday, March 3, 2019, 5:55:38 AM EST, Paul Blundell <tanger32au@...> wrote:


Just a heads up, somebody has stolen my blog name.  https://theultralightradiodxer.blogspot.com

This is no longer ran by me,  I have been in the process of moving to a new blog but had not totally finished.  My blog can be found here: 

--
Paul - Moderator
UltralightDX

--
73
Phil
KD2HTN / WA2069SWL
Long: 34.210293 Lat:-78.057048
FM04xf 30dl


--
Paul - Moderator
UltralightDX


Re: Blog Gone

Phillip Fimiani
 

The phrase is Indonisian... "There is nothing here." So they dumped it... Wonder if blogspot.com can delete it?

 
Best Regards
Phil
KD2HTN / WA2069SWL

______________________________

On Sunday, March 3, 2019, 5:55:38 AM EST, Paul Blundell <tanger32au@...> wrote:


Just a heads up, somebody has stolen my blog name.  https://theultralightradiodxer.blogspot.com

This is no longer ran by me,  I have been in the process of moving to a new blog but had not totally finished.  My blog can be found here: 

--
Paul - Moderator
UltralightDX

--
73
Phil
KD2HTN / WA2069SWL
Long: 34.210293 Lat:-78.057048
FM04xf 30dl


Re: Blog Gone

Paul Blundell
 

Yeah I can't work out how it even happened. It must have been in the past few days. 


On Sun, 3 Mar 2019, 10:06 p.m. blumu via Groups.Io, <blumu=btinternet.com@groups.io> wrote:


On 03.03.19 10:55, Paul Blundell wrote:

> Just a heads up, somebody has stolen my blog name.
> https://theultralightradiodxer-dot-blogspot-dot-com
>
> This is no longer ran by me,  I have been in the process of moving to a
> new blog but had not totally finished.  My blog can be found here:
> https://airbandlisteningtasmania.blogspot.com
------------------------

Thanks  for the warning, Paul.

In order to garner subscriber info with nefarious intent,
pfishers often piggyback or usurp existing websites.
This is not always apparent, which is why it can
be "profitable" to pfishers.


Michael UK




--
Paul - Moderator
UltralightDX


Re: Blog Gone

Michael.2E0IHW
 

On 03.03.19 10:55, Paul Blundell wrote:

Just a heads up, somebody has stolen my blog name. https://theultralightradiodxer-dot-blogspot-dot-com
This is no longer ran by me,  I have been in the process of moving to a new blog but had not totally finished.  My blog can be found here:
https://airbandlisteningtasmania.blogspot.com
------------------------

Thanks for the warning, Paul.

In order to garner subscriber info with nefarious intent,
pfishers often piggyback or usurp existing websites.
This is not always apparent, which is why it can
be "profitable" to pfishers.


Michael UK


Blog Gone

Paul Blundell
 

Just a heads up, somebody has stolen my blog name.  https://theultralightradiodxer.blogspot.com

This is no longer ran by me,  I have been in the process of moving to a new blog but had not totally finished.  My blog can be found here: 

--
Paul - Moderator
UltralightDX


Re: August 2018 Rockwork Ocean Cliff (Oregon) DXpedition Article

Paul Blundell
 

Excellent report as always. 


On Sat, 2 Mar 2019, 5:41 a.m. David Edger, <dnedger@...> wrote:
Wow!  You guys really set the bar high for next time. My little PL380 has a lot of work to do. Thanks for the write up.

Cheers, Dave N3CI

 

From: main@ultralightdx.groups.io on behalf of KA5DWI Art via Groups.Io <ka5dwi=yahoo.com@groups.io>
Sent: Friday, March 1, 2019 8:13 AM
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] August 2018 Rockwork Ocean Cliff (Oregon) DXpedition Article
 

Enjoyed it. Excellent work by you all.

Regards Art Jackson KA5DWI


--
Paul - Moderator
UltralightDX


Re: August 2018 Rockwork Ocean Cliff (Oregon) DXpedition Article

David Edger
 

Wow!  You guys really set the bar high for next time. My little PL380 has a lot of work to do. Thanks for the write up.

Cheers, Dave N3CI

 


From: main@ultralightdx.groups.io on behalf of KA5DWI Art via Groups.Io <ka5dwi@...>
Sent: Friday, March 1, 2019 8:13 AM
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] August 2018 Rockwork Ocean Cliff (Oregon) DXpedition Article
 

Enjoyed it. Excellent work by you all.

Regards Art Jackson KA5DWI


Re: August 2018 Rockwork Ocean Cliff (Oregon) DXpedition Article

K7DWI Art
 

Enjoyed it. Excellent work by you all.

Regards Art Jackson KA5DWI

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