2.4GHz Question

[sea bee]

The BMFA recommends using a black peg on 2.4GHz Tx aerial.

Does anyone really know what effect this has on the efficiency of the Tx
aerial?

Given the short wavelength I would have thought the coil spring of a peg
might act as a choke.


sea bee

[TTman]

Post by sea bee
The BMFA recommends using a black peg on 2.4GHz Tx aerial.
Does anyone really know what effect this has on the efficiency of the Tx
aerial?
Given the short wavelength I would have thought the coil spring of a peg
might act as a choke.
sea bee

It's a black band that you put on the transmitter.....not a 'peg'. The PEG
is for the frequency control board....

[sea bee]

Post by TTman

Post by sea bee
The BMFA recommends using a black peg on 2.4GHz Tx aerial.
Does anyone really know what effect this has on the efficiency of the Tx
aerial?
Given the short wavelength I would have thought the coil spring of a peg
might act as a choke.
sea bee

It's a black band that you put on the transmitter.....not a 'peg'. The PEG
is for the frequency control board....

From:

http://www.bmfa.org/publications/24ghzguidance.html

Quote:

'It is suggested that clubs utilising the "peg on" method of frequency
control have a separate 2.4 GHz section for members to place a named peg.'

This has been interpreted, with guidance from the BMFA, as 'peg on / peg
off' i.e. you replace one of the black pegs on the board with your named
peg and place the black peg on your Tx aerial - I think this is both
unnecessary and possibly dangerous, but I don't know for sure.

sea bee

[TTman]

Post by sea bee
http://www.bmfa.org/publications/24ghzguidance.html
'It is suggested that clubs utilising the "peg on" method of frequency
control have a separate 2.4 GHz section for members to place a named peg.'
This has been interpreted, with guidance from the BMFA, as 'peg on / peg
off' i.e. you replace one of the black pegs on the board with your named
peg and place the black peg on your Tx aerial - I think this is both
unnecessary and possibly dangerous, but I don't know for sure.
sea bee

I agree, you don't want anything around your aerial that can interfere with
the efficiency of the transmission system.
I suggest you re read the BMFA suggestions....It is quite clear about a
black ribbon on your antenna

[unknown]

Post by sea bee

Post by TTman

Post by sea bee
The BMFA recommends using a black peg on 2.4GHz Tx aerial.
Does anyone really know what effect this has on the efficiency of the Tx
aerial?
Given the short wavelength I would have thought the coil spring of a peg
might act as a choke.
sea bee

It's a black band that you put on the transmitter.....not a 'peg'. The
PEG is for the frequency control board....

http://www.bmfa.org/publications/24ghzguidance.html
'It is suggested that clubs utilising the "peg on" method of frequency
control have a separate 2.4 GHz section for members to place a named peg.'
This has been interpreted, with guidance from the BMFA, as 'peg on / peg
off' i.e. you replace one of the black pegs on the board with your named
peg and place the black peg on your Tx aerial - I think this is both
unnecessary and possibly dangerous, but I don't know for sure.
sea bee

a.. >>It is suggested that clubs utilising the "peg on" method of frequency
control have a separate 2.4 GHz section >for members to place a named peg.


For what reason?

J.

[TTman]

Post by unknown
a.. >>It is suggested that clubs utilising the "peg on" method of
frequency control have a separate 2.4 GHz section >for members to place a
named peg.
For what reason?
J.

a) to get you in the habit of using a peg system, just in case you go back
to 35M, or have both :)
b) There can be a quick and easy audit/head count of how may ppl are logged
as active/flying.

[unknown]

Post by TTman

Post by unknown
a.. >>It is suggested that clubs utilising the "peg on" method of
frequency control have a separate 2.4 GHz section >for members to place a
named peg.
For what reason?
J.

a) to get you in the habit of using a peg system, just in case you go back
to 35M, or have both :)

Ok.

Post by TTman
b) There can be a quick and easy audit/head count of how may ppl are
logged as active/flying.

Pilots should be in a "flight circle", makes communication easier.
And headcount simple.

35 Mhz is dying.....

So for time being... use a peg.

J.

[Gavin]

Post by TTman

Post by sea bee
The BMFA recommends using a black peg on 2.4GHz Tx aerial.
Does anyone really know what effect this has on the efficiency of the Tx
aerial?
Given the short wavelength I would have thought the coil spring of a peg
might act as a choke.
sea bee

It's a black band that you put on the transmitter.....not a 'peg'. The PEG
is for the frequency control board....

not always we use a stake and peg system, we all have stakes and pegs
and put them out when flying, and the peg is taken off and out on the
TX when you have frequency.

We don't have a fixed board and the council and farmer won't let us
put one up at either of our sites (Actually on one site it would
probably be vandelised or burn down!) , so we use the peg off method.

2.4 users DO need a flag and peg, mainly as most of our club don't
fly 2.4 exclusively and go back to 35 depending on the plane and this
keeps it in peoples routine.

[Nobby Anderson]

Post by sea bee
The BMFA recommends using a black peg on 2.4GHz Tx aerial.
Does anyone really know what effect this has on the efficiency of the Tx
aerial?
Given the short wavelength I would have thought the coil spring of a peg
might act as a choke.

On JR/Spektrum antennas the active hit is above the bend, so as long as
whatever you attach is below the bend it won't have any effect. I think
that's the same for Futaba, but I can't be sure.

We use pegs for 2.4GHz at our club really so that it's obvious who
is active at the time. It's just a peg-on system though, and we are
relaxed about leaving it on the board when not flying, typically
it goes on when someone arrives and stays all day until they leave.

Nobby