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96.3 OFM 209km D-808 with yagi aerial
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Peter 1956 <pe1etr@...>
Schweizer-Reneke 209km https://youtu.be/KFvHKetXt2M Peter Botswana
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Jorge Garzón <iberiaDX@...>
Hi Peter,
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Could you provide more info about that use of a yagi with the little D-808, and your overall opinion of the results?
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Peter 1956 <pe1etr@...>
Hola Jorge,
There is an antenna socket on the left-hand side of the D-808 which works on SW and FM. There is some evidence of overload using a yagi on FM. I'd imagine the overload will be worse in Spain. An outdoor FM dipole might be a better choice. The D-808 has poor selectivity on FM when compared to Tecsun DSP portables. The D-808 also has several birdies on FM. RDS on the D-808 only works on strong signals. The audio in my video was good but no RDS was decoded. Peter |
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Peter 1956 <pe1etr@...>
The PL-398MP is much better on FM than the XHDATA-D808.
The D-808 wasn't able to pass this test when using a vertical FM dipole. https://youtu.be/OPZI5_PsH-Q FM stations 100kHz apart can be separated. 96.2 Gabz FM Gaborone/ Gabane Botswana 69km 96.3 OFM Schweizer-Reneke South Africa 209km Peter |
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Phillips
Yagi's offer antenna gain but they also have the benefit of directionality.
Verticals (whip)s are omnidirectional) and offer no opportunity to null out. Dipoles have a figure-eight pattern and have two opportunities per rotation for nulling. Yagi's have a cardioid pattern and so are unidirectional giving the best opportunity for
nulling.
If anyone is having trouble with pest stations on or near the frequency of interest, a yagi might be the solution depending on the relative directions of the two stations.
If the yagi overloads the Rx, an attenuator is a simple construction.
From: main@UltralightDX.groups.io <main@UltralightDX.groups.io> on behalf of Jorge Garzón via groups.io <iberiaDX@...>
Sent: Saturday, 15 May 2021 4:32 PM To: main@UltralightDX.groups.io <main@UltralightDX.groups.io> Subject: Re: [UltralightDX] 96.3 OFM 209km D-808 with yagi aerial Hi Peter,
Could you provide more info about that use of a yagi with the little D-808, and your overall opinion of the results?
Gracias
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Jorge Garzón <iberiaDX@...>
Yes, that's the way Phillips!
Peter, it's a pity that these TECSUN little ones does not offer RDS decoding!! |
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