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Search: Posts Made By: Daveg4otu
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Forum: Aviation History and Nostalgia
28th Mar 2009, 18:39
Replies: 11
Views: 1,636
Posted By Daveg4otu

That's the one ! Nice picture.

That's the one ! Nice picture.
Forum: Aviation History and Nostalgia
28th Mar 2009, 07:53
Replies: 11
Views: 1,636
Posted By Daveg4otu

Back in 1990 53-0044/N3153F was preserved outside...

Back in 1990 53-0044/N3153F was preserved outside the airport at Las Vegas - painted a pale blue color.

Got a picture somewhere- will try to find it.

In the 60s...C-124s were regulars along...
Forum: Private Flying
16th Feb 2009, 19:05
Replies: 20
Views: 2,252
Posted By Daveg4otu

First 10 hours - IIRC mostly circuits...and again...

First 10 hours - IIRC mostly circuits...and again IIRC first solo was at about 8 hours...this back when you could complete in 35 hours..I believe that has changed?
Forum: Spectators Balcony (Spotters Corner)
15th Feb 2009, 20:11
Replies: 38
Views: 2,028
Posted By Daveg4otu

I accept that capture effect is one of the...

I accept that capture effect is one of the reasons am is used but perhaps it became a reason with increased traffic?

I think (but stand to be corrected) that the main reasons AM is used for...
Forum: Spectators Balcony (Spotters Corner)
15th Feb 2009, 08:56
Replies: 38
Views: 2,028
Posted By Daveg4otu

M5DND - surely the effect is going to vary also...

M5DND - surely the effect is going to vary also with regard to orbital height and with regard to the satelite speed relative to the ground station?
Forum: Spectators Balcony (Spotters Corner)
15th Feb 2009, 08:54
Replies: 38
Views: 2,028
Posted By Daveg4otu

whose clock are you using to measure the...

whose clock are you using to measure the perceived frequency


I would have though that from the context it was pretty obvious I was talking about the receiver end not the TX.

At the TX...
Forum: Spectators Balcony (Spotters Corner)
15th Feb 2009, 07:30
Replies: 38
Views: 2,028
Posted By Daveg4otu

So what is the the reason for having to re-tune...

So what is the the reason for having to re-tune constantly if one is following an amateur satellite

Getting into supposition now ...but most comms satelites are in relatively high orbits .

A...
Forum: Spectators Balcony (Spotters Corner)
15th Feb 2009, 06:43
Replies: 38
Views: 2,028
Posted By Daveg4otu

I think canard68 is right about the reason being...

I think canard68 is right about the reason being historic. Interesting that marine radio comms are on FM..

Yes - just waiting for someone to pop up and tell us that is OK because ships move...
Forum: Spectators Balcony (Spotters Corner)
14th Feb 2009, 20:53
Replies: 38
Views: 2,028
Posted By Daveg4otu

The whole business about dopplershift vis-a-vis...

The whole business about dopplershift vis-a-vis FM or AM transmissions is flawed anyway.

Doppler shift - if it was a concern ,would have exactly the same effect on AM or FM transmissions ( or...
Forum: Spectators Balcony (Spotters Corner)
14th Feb 2009, 20:36
Replies: 38
Views: 2,028
Posted By Daveg4otu

how can it be total rubbish when its true. ...

how can it be total rubbish when its true.

I'm sure you know what I meant.


When the transmitter is moving the actual transmitted frequency does change.

No it doesn't ...only the...
Forum: Spectators Balcony (Spotters Corner)
14th Feb 2009, 19:19
Replies: 38
Views: 2,028
Posted By Daveg4otu

with FM the frequency is compressed by the...

with FM the frequency is compressed by the movement of the aircraft due to doppler shift.#


with all due respect this is total rubbish- given that radio waves travel at the speed of light...
Forum: Spectators Balcony (Spotters Corner)
14th Feb 2009, 15:44
Replies: 38
Views: 2,028
Posted By Daveg4otu

It is indeed all about bandwidth and quality .......

It is indeed all about bandwidth and quality .... or rather the lack of need for high quality audio .


AM provides adequate quality within a comparitively narrow bandwidth.
Even NBFM requires...
Forum: Spectators Balcony (Spotters Corner)
31st Jan 2009, 10:49
Replies: 33
Views: 3,472
Posted By Daveg4otu

After 50+ years of looking at aircraft, flying a...

After 50+ years of looking at aircraft, flying a few of them,visiting airfields all over the world - even those that have not seen an aircraft since I was a toddler and latterly running a historical...
Forum: Spectators Balcony (Spotters Corner)
10th Jan 2009, 10:37
Replies: 3
Views: 698
Posted By Daveg4otu

Best bet is to read the BAEG Group....looks like...

Best bet is to read the BAEG Group....looks like yesterday was 105 (104 the day before).

Heres the link..
BAEG : Bournemouth Airport Enthusiast's Group (http://groups.yahoo.com/group/BAEG/)
Forum: Aviation History and Nostalgia
9th Jan 2009, 17:46
Replies: 18
Views: 12,911
Posted By Daveg4otu

FWIW In the late 60s/early 70s I used to...

FWIW In the late 60s/early 70s I used to regularly vist the BAC factory at Hurn and on one occasion saw a mockup cabin which was I believe , the Three-eleven....however - can't remember exact...
Forum: Spectators Balcony (Spotters Corner)
9th Jan 2009, 17:40
Replies: 3
Views: 698
Posted By Daveg4otu

I believe it was XV104

I believe it was XV104
Forum: Aviation History and Nostalgia
9th Jan 2009, 11:02
Replies: 13
Views: 1,686
Posted By Daveg4otu

For instance what would be the correct name for a...

For instance what would be the correct name for a Douglas DC 3 these days?

IMO the correct name will be as it always was - a Douglas DC-3.....

Let's face it - a Morris Mini produced in ...
Forum: Aviation History and Nostalgia
7th Jan 2009, 18:50
Replies: 5,750
Views: 818,485
Posted By Daveg4otu

Just reading through the thread - a small...

Just reading through the thread - a small correction to posts 3877(Chevron) and 3878 (Nacluv) about RAF Beaulieu...

That airfield was not known as East Boldre- not at any time ...East Boldre...
Forum: Aviation History and Nostalgia
7th Jan 2009, 18:07
Replies: 144
Views: 90,039
Posted By Daveg4otu

Here is a brief airfield history,,.... ...

Here is a brief airfield history,,....

THORNEY ISLAND (http://daveg4otu.tripod.com/airfields/tis.html)
Forum: Aviation History and Nostalgia
6th Jan 2009, 07:23
Replies: 47
Views: 21,510
Posted By Daveg4otu

REbuilt/new build Mustangs.... Piper PA-48...

REbuilt/new build Mustangs....

Piper PA-48 Enforcer - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Piper_PA-48_Enforcer)
Showing results 1 to 20 of 20


 
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