Andy,
Will you be cutting the 2m/70cm portions for FM or the SSB portion? Those two
might get tricky as 70cm is a harmonic of 2m. It of course can potentially be
advantageous if using one antenna (or radiator) for both so long as you can
live with the way it radiates. Radiation lobes for 2m
If only more software authours would provide their audio drive in stereo I/Q
form it would make direct upconversion a real doddle. If the signals were
generated at baseband, even poor I/Q balance would not be too serious, as the
image then lies on top of the wanted signal.
For narrow band
Thanks for the testing Tony. We observe Doppler shifts of as much as 100
Hz and Doppler spreads around 50 Hz or greater. On SSB phone, a S3
signal will not be intelligible and you can hear the voice pitch go down
in a fluttering manner. ROS definitely produces nothing but garbage when
SSB
Member removed.
Andy K3UK
On Wed, Jul 21, 2010 at 4:42 AM, Mark Milburn markk...@yahoo.com wrote:
Hi!A surprise!
My Korean friend told me a website(www.zol-kr.com),they have a variety of
products,such as computers,mobile phones,TVs,digital cameras and so on,they
have very good
Andy,
You first have to decide if you will use horizontal or vertical
polarization - vertical polarization mostly for working the repeaters on
2M and 70CM, or horizontal polarization for working SSB stations.
Omnidirectionality is easy with vertical polarization but much more
difficult with
What about a multiband verticl fort he uppoer bands .. Stacked with some
gain like the x 510 or the x 6000
Omnidirectional . 2 or 3 bands . with some gain . can be used also for local
repeater or emergency work .
Just an idea
For 6 and 10 better use a small beam
But you can start with a
Hi Ted: Concur, which is why I simply created the internal email filter with
the rule, scan any msg in the inbox for the word ros, and place in the Junk
Mail folder for disposal along with the offers for blonds, diplomas from
MIT, and enhancements.
73
Les
Lester B Veenstra
I think the key to making it really fly would be to hold some short sprint
contests using PSK63 only. That way you could get a lot of guys to try it
without a big commitment of time and effort. As it gains acceptance thru that
and word of mouth, it could be added as an optional mode in more
JT8 is proposed as a possible alternative to JT4. Modulation is 8-FSK at 2.857
baud. FEC uses convolutional codes with K=14, r=1/4, K=15, r=1/6, or K=16,
r=1/8, depending on message length. Synchronization uses 8×8 Costas arrays at
the beginning and end of a transmission, followed by two
It is a very NARROW mode
On 7/21/10, Russell Blair russell_blai...@yahoo.com wrote:
THIS IS NOT TO START A BIG THING...I was using one of the new modes today
WSJT8
Beta and was informed that the bandwidth exceeded to limits on HF... My
question
What is the bandwidth ?
Russell NC5O
1-
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