Date
1 - 16 of 16
Tecsun PL-600 Birdie
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Lasse
I just got a PL-600 and while tuning it on the LW band I came across a severe birdie between 450-460 kHz. Is this what to expect from a cheap chineze radio? I'm not too happy with my radio, so I wonder if it could be one of those that QC missed...
I have a video that shows this: http://www.youtube.com/watch?v=q_23b2oyujE&feature=plcp Regards Lasse |
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ferrite61 <dxrx@...>
Well, you could put the radio into SSB mode and tune to 454kHz and 456kHz and check the pitch between te two. Adjusting the "Fine tuning" until the pitch is the same will help tune the radio in SSB mode. I do this on my Grundig G5.
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Paul S. in CT --- In ultralightdx@..., "Lasse No" <lasse.radio@...> wrote:
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Lasse
The birdie is approx at 454.8 kHz. I't quite annoying since all signals is lost between 450-460 due to this birdie. Is this normal for a cheap reciever (PL-600) to have such a strong birdie, or is there some fault in my reciever? Does anyone else have this error? If not, I might send it back to get it fixed.....
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Regards Lasse --- In ultralightdx@..., "ferrite61" <dxrx@...> wrote:
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Rik
I have strong interference at 444kHz. UNTIL I move away from all computers on my PL-600. Once I do that it is clear past 460 kHz. - FARMERIK
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--- In ultralightdx@..., "ferrite61" <dxrx@...> wrote:
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Lasse
I have it both 5 inch from my computer and 20 miles out in the wilderness with no nearby gadget that can cause it, so it's definetly a birdie, not RFI.
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Regards Lasse --- In ultralightdx@..., "farmerik" <farmerik@...> wrote:
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Rik
That eliminates that. Are you running any radios with a 455 kHz. IF frequency at the same time? - FARMERIK
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--- In ultralightdx@..., "Lasse No" <lasse.radio@...> wrote:
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Lasse
Nope, no other rx or anything else that could generate that. It's a strong birdie, tops the scale.
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Regards Lasse --- In ultralightdx@..., "farmerik" <farmerik@...> wrote:
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Rik
Can't think of anything else, but I am certainly no expert. Being a common radio IF which for years most radios could not tune, it seems unlikely 455 kHz. is used for broadcasts, so at least the birdie is in a good spot. - FARMERIK
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--- In ultralightdx@..., "Lasse No" <lasse.radio@...> wrote:
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Lasse
Only a few NDB's, which I can take with another receiver, so not a great problem, but still it should not be there, not that strong anyway....
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Regards Lasse --- In ultralightdx@..., "farmerik" <farmerik@...> wrote:
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d4g7johnson
I thought it was common for <$1000 radios to use 455KHZ
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I.F. (even if they are dual conversion and have another higher I.F. frequency). Then if there is I.F. leakage back into the RF input stage you will get oscillation at about 455KHZ. The Radio Shack DX-440 is an prime example of this, made worse by being single-conversion. I don't have a PL-600 to compare, but it sounds like the exact same problem. --- In ultralightdx@..., "Lasse No" <lasse.radio@...> wrote:
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Joe
The DX-440/ATS-803 are dual conversion. Also, the Sony 2010 is
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dual conversion. All exhibit the 455 kHz birdie syndrome though! It can be a definite PITA! Joe --- In ultralightdx@..., "d4g7johnson" <d4g7johnson@...> wrote:
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ferrite61 <dxrx@...>
Most <$1000 radios have this problem... but its not really a problem. You are losing a total of 2 NDB's on 450kHz. The other nearest ones are 440kHz and 492kHz. As I posted earlier, you can use this to center the BFO by tuning 454 and 456kHz and adjusting the fine tuning wheel until the pitch is the same on both frequencies.
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I really don't see this as make/break purchase. Paul S. in CT --- In ultralightdx@..., "d4g7johnson" <d4g7johnson@...> wrote:
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Russ Edmunds <wb2bjh@...>
--- On Mon, 9/3/12, toptyp19 wrote:
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Lasse
Thanks for all the info. Since it's quite strong, killing any normal reception between 450-460 I was bit concerned that the radio might have a serious fault. But as you all have pointed out, it seems quite normal for a cheap radio. I guess I have to live with that...
Regards Lasse |
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Rik
Remember, my PL-600 does not have any birdie between 450 and 460. I dug out my old one, and it has no birdie there either. So there a two PL-600 radios without that problem. - FARMERIK
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--- In ultralightdx@..., "Lasse No" <lasse.radio@...> wrote:
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d4g7johnson
Sorry for that. I learned something new about a radio I have
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owned for years (the DX-440 being double conversion). I just assumed it was single because almost all double-conversion radios list that on the case to help sell the radio. The 440 certainly does not have much image rejection when tuning LW. --- In ultralightdx@..., "toptyp19" <toptyp19@...> wrote:
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