Re: Improving LW

Kevin Schanilec

Hey Steve/all:

I tried in the past to buy a M37L, but they are apparently only available in Europe, primarily in the UK, where they go for about $45 US plus whatever the shipping would be. KK Electronics claims to ship from the UK to the USA - I have an email into them just for kicks to see what it would cost overall.

The manual is here:
Unfortunately, the M37L only tunes 153-279 khz, which misses most of the NDB band here. Also, the tuning step is 9 khz, so even with the very wide filtering, the NDB coverage would be even more spotty.


--- In ultralightdx@..., "Steve Ratzlaff" <steveratz@...> wrote:

Hi Henk,
Where do you obtain the SRF-M37L? I'm not familiar with that model, with the


----- Original Message -----
From: "Henk_Verdru" <henk.verdru@...>
To: <ultralightdx@...>
Sent: Tuesday, January 11, 2011 2:57 AM
Subject: [ultralightdx] Re: Improving LW

--- In ultralightdx@..., Russ Edmunds <wb2bjh@> wrote:

The longer the wavelength, the larger the antenna needed for good
reception. That's why the typical ultralight doesn't do well on LW. I'll
let others speak to what's available to help the signals.

Russ Edmunds
Correct, but this rule doesn't explain why the Tecsuns underperform on LW
in comparison with e.g. Sony's SRF-M37L (even with all its shortcomings)
which has a shorter antenna.



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