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Re: Selectivity, sensitivity, quality
That’s one of the beautiful things about regenerative tuned loops. They can have sharper selectivity than the radio and can be detuned to favor one sideband or the other. A very well made FSL will
That’s one of the beautiful things about regenerative tuned loops. They can have sharper selectivity than the radio and can be detuned to favor one sideband or the other. A very well made FSL will
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By
Robert Conboy
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#33541
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Re: ULDXIndex and MWDXerDB V22.03
Yes, here in Australia we have the ACMA database which gives the "straight line" distance between my location and the station Ihear, this is the distance I use.
Paul
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Paul
Yes, here in Australia we have the ACMA database which gives the "straight line" distance between my location and the station Ihear, this is the distance I use.
Paul
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Paul
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By
Paul Blundell
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#33540
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Re: ULDXIndex and MWDXerDB V22.03
Hi Bill,
I rate all the signals out of 5 and then use the below to work out the index value.
1 = 1.1
2 = 1.4
3 = 1.9
4 = 2.4
5 = 3
ULDXIndexValue = DistanceKM / PowerW * SignalLevel
Paul
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Paul
Hi Bill,
I rate all the signals out of 5 and then use the below to work out the index value.
1 = 1.1
2 = 1.4
3 = 1.9
4 = 2.4
5 = 3
ULDXIndexValue = DistanceKM / PowerW * SignalLevel
Paul
--
Paul
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By
Paul Blundell
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#33539
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Re: Headphones
These might be a bit bulky for UL use, but there are simply no finer DX headphones than these. They are the standard for every radio station I ever worked at, for video production, etc. I got my
These might be a bit bulky for UL use, but there are simply no finer DX headphones than these. They are the standard for every radio station I ever worked at, for video production, etc. I got my
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By
DX Central - Loyd Van Horn (W4LVH)
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#33538
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Re: What a difference a day makes!
Well I certainly didn’t pick anything up from there Paul! 🙂
Well I certainly didn’t pick anything up from there Paul! 🙂
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By
FenDrifter
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#33537
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Re: All Continental US States - 2022
Well done.
I have been a bit slow with starting my DXing for 2022, my work on MWDXerDB has taken up most of my spare time.
Well done.
I have been a bit slow with starting my DXing for 2022, my work on MWDXerDB has taken up most of my spare time.
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By
Paul Blundell
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#33536
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Re: ULDXIndex and MWDXerDB V22.03
Those are just callsigns of some stations to use as examples.
Paul
Those are just callsigns of some stations to use as examples.
Paul
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By
Paul Blundell
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#33535
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Re: What a difference a day makes!
Down in Tasmania. I know they were working 20 and 40m bands.
Down in Tasmania. I know they were working 20 and 40m bands.
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By
Paul Blundell
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#33534
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Re: Anybody get a new radio recently?
The PL380 does not come with a charger. If I bought an adapter when buying the radio, would it recharge its batteries as well as powering the radio?
The PL380 does not come with a charger. If I bought an adapter when buying the radio, would it recharge its batteries as well as powering the radio?
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By
James Rohrer
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#33533
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Re: ULDXIndex and MWDXerDB V22.03
Yea, whatever you do, don’t use the evil Google. I use this site to obtain ‘as the crow flies’ distances:
https://www.doogal.co.uk/MeasureDistances.php
Drifter
Yea, whatever you do, don’t use the evil Google. I use this site to obtain ‘as the crow flies’ distances:
https://www.doogal.co.uk/MeasureDistances.php
Drifter
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By
FenDrifter
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#33532
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Re: ULDXIndex and MWDXerDB V22.03
My inclination is to use miles to the farthest station heard in a session. Google miles gives shortest road distance. This like bragging about the biggest fish you caught.
My inclination is to use miles to the farthest station heard in a session. Google miles gives shortest road distance. This like bragging about the biggest fish you caught.
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By
James Rohrer
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#33531
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Re: ULDXIndex and MWDXerDB V22.03
Hi Paul,
How is the ULDXIndex assigned? Is it a reception difficulty index?
Bill
Hi Paul,
How is the ULDXIndex assigned? Is it a reception difficulty index?
Bill
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By
mediumwavedx
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#33530
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Headphones
My small JVC headset amplifies the sound and eliminates ambient noise. Only one ear, of course. Earplugs are not as good. What are other options?
My small JVC headset amplifies the sound and eliminates ambient noise. Only one ear, of course. Earplugs are not as good. What are other options?
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By
James Rohrer
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#33529
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Re: All Continental US States - 2022
Hi Paul,
Was cruising along quite quickly at first...
24 States!
But now it has gotten more difficult as the states are further and further away....
J
Hi Paul,
Was cruising along quite quickly at first...
24 States!
But now it has gotten more difficult as the states are further and further away....
J
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By
Johnny
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#33528
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Re: Anybody get a new radio recently?
Everybody's gear sounds AWESOME!
I need to stop buying radios though!!!
LOL!!!
Johnny
Everybody's gear sounds AWESOME!
I need to stop buying radios though!!!
LOL!!!
Johnny
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By
Johnny
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#33527
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Re: Anybody get a new radio recently?
Hi Bill,
I just got a Sangean 909X2, and I LOVE It!
It is my favorite radio easily...
But I do still love my Eton Elite Mini and my 2nd favorite amongst the rest of the radios I have.
Really trying to
Hi Bill,
I just got a Sangean 909X2, and I LOVE It!
It is my favorite radio easily...
But I do still love my Eton Elite Mini and my 2nd favorite amongst the rest of the radios I have.
Really trying to
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By
Johnny
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#33526
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Re: ULDXIndex and MWDXerDB V22.03
Paul,
I like the idea if an index but do not understand the codes: GG, CA, AN. Do all UL radios have this info?
Paul,
I like the idea if an index but do not understand the codes: GG, CA, AN. Do all UL radios have this info?
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By
James Rohrer
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#33525
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Re: Selectivity, sensitivity, quality
Right. But the trouble is many ultralights tune in 1kHz steps. 1kHz is often not enough and 2kHz is often too much.
Right. But the trouble is many ultralights tune in 1kHz steps. 1kHz is often not enough and 2kHz is often too much.
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By
Martin Courcel
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#33524
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Re: Selectivity, sensitivity, quality
Robert, thanks for the clarification.
Robert, thanks for the clarification.
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By
James Rohrer
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#33523
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Re: Selectivity, sensitivity, quality
Selectivity is a combination of the channel selection filter’s bandwidth and how steeply the filter attenuates frequencies outside the filter’s bandwidth.
Narrow filters have greater
Selectivity is a combination of the channel selection filter’s bandwidth and how steeply the filter attenuates frequencies outside the filter’s bandwidth.
Narrow filters have greater
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By
Robert Conboy
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#33522
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