Hampshire IOW frequencies

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Hampshire IOW frequencies

Postby rjs2301 » Thu Apr 18, 2019 11:38 am

Though living in Somerset I can pick up some mid channel aircraft heading toward London and those approaching from Lands End along the south coast but don't seem to be picking up outgoing traffic in IOW area having departed London. Can anybody give me some additional frequencies to monitor for that area both in and outbound.. Much appreciated.
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Re: Hampshire IOW frequencies

Postby nigel 007 » Thu Apr 18, 2019 6:25 pm

Try the Bournemouth frequencies, 129.425 135.050, 127.825. Southampton radar,120,230, seaford 134.440, south west departures 134.125, that's a few to get you going .
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Re: Hampshire IOW frequencies

Postby Chris P » Fri Apr 19, 2019 7:43 am

nigel 007 wrote:Try the Bournemouth frequencies, 129.425 135.050, 127.825. Southampton radar,120,230, seaford 134.440, south west departures 134.125, that's a few to get you going .



Nigel the Southampton and seaford details are 8.33khz spaced channel designations rather than the actual frequencies which are 120.225 and 134.44166
Regards Chris aka G8FFF nipper or tazmin88
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Re: Hampshire IOW frequencies

Postby nigel 007 » Fri Apr 19, 2019 7:54 am

Chris, you will still get them on the frequencies I quoted, this 8 .33 lark really gets on my nerves, it's so confusing for people, it's like tuning in an old transistor radio, you will still pick it up even if your a tad off, far too much of this nonsense about.
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Re: Hampshire IOW frequencies

Postby nigel 007 » Fri Apr 19, 2019 7:55 am

0.5 is not going to make any difference whatsoever.
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Re: Hampshire IOW frequencies

Postby Chris P » Fri Apr 19, 2019 8:00 am

agreed but some scanners will not accept the channel designations and jump to a 25Khz frequency which may make a difference and stop you hearing both ground and aircraft transmissions.

If you are 5Khz off the actual frequency on a weak signal it can make the difference between a fully readable signal and a noisy one depending on the bandwidth of your receiver . I accept fully that most scanners will not notice the difference as they have wide open front ends , and that they are not true 8.33 channel spaced designed units
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Re: Hampshire IOW frequencies

Postby Minus1 » Fri Apr 19, 2019 9:54 am

nigel 007 wrote:0.5 is not going to make any difference whatsoever.


Yes it is. Some 25 kHz transmissons are intentionally offset by 5 or 7.5 kHz in order to reduce interference from multiple transmitters using the same frequency. London Information freqs are a good example. 5 kHz can make all the differcne between receiving a weak signal and not receiving it.
I reserve the right to ignore people who have made no attempt to the read the manual, and expect others to do it for them.
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Re: Hampshire IOW frequencies

Postby Minus1 » Fri Apr 19, 2019 9:59 am

These are all transmitted from the NATS site at Ventnor. There may be others. [Sector]

124.75 AM London Information (West)
127.825 AMn 127:830 London Portsmouth [22] Upper
128.6 AM 128.6 Volmet London South
129.2 AMn 129:205 London ATC, Daventry [27] Lower
129.425 AMn 129:430 London ATC [Worthing 20/21]
132.84166 AMn 132:840 London S Upr [1]
135.05 AM 135:055 London ATC Worthing [18,19]

Possible, not confirmd:
129.275 AM London ATC (Inbound via Bovingdon, rarely used) ???
135.325 AM London ATC (South) [16,18]??
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Re: Hampshire IOW frequencies

Postby Chris P » Fri Apr 19, 2019 10:07 am

Makes a 4 "S" point difference on my Rx when I tune to London volmet on the chedburgh tx which is on 126.605 as opposed to 126.600 which is the designated frequency . and 4 "s" points can really affect the readability
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Re: Hampshire IOW frequencies

Postby rjs2301 » Fri Apr 19, 2019 10:10 am

al much appreciated
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