Dave,
I have a Philips badged version of the 38A in use on GB3DX to lockout audio
on the main Rx when remote rxs are in use.
The unit seems to decode into the noise more than any mobile/portable set.
I think a spare unit is available- contact me off list.
[EMAIL PROTECTED]
Ian-G8PWE -Walsall
www.
Gareth,
For two transmitters the length of the circulator
to porcupine jumper would be 5/8 wavelength in coax.
When these two are parrelled the common
impedance is 25+j25 ohm.
Looking at the Smith chart it looks like a
paralleled s/c stub of -j25 would acheive a match to 50 ohm.
P
Has anybody on the group synchronised two or more transmitters together with
a landline/RF link or done it digitally with a DSL/T1(E1) link ?
How is it done?
Ian Ashford
G8PWE
www.gb3dx.com
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yah
adjust the port 2 (Antenna) matching for minimum tx
power at the receive port. However as this is typically a single capacitor,
some additional work with a line stretcher on your feeder would be required
to obtain a true minimum.
Ian Ashford
G8PWE
www.gb3dx.com
- Original Message
Dave.
I have a couple of beer barrel resonators made in England by Aerial
facilities ltd (Now gridcom) :
A brand new barrel is silver plated then painted in grey etch primer/ gloss
The old stainless -steel pickup tube and mounting plate is removed and
replaced by a silver-plated variable length p
We have recently had a couple of instances of severe interference on our
repeater.
1)An energy saving lightbulb- acting as a -600khz transposer 200ft from our
repeater.
2)A Dell computer monitor- again as a transposer, but very strong.
Both instances took some weeks to DF and rectify.
This repe
Lee
I use an IFR/Marconi comms test set linked to
a Lindos LA101/102.
The results of the sweep are put into a live windows
page so you can add components on the fly.
Each sweep has an initial FFSK ident so that long delay
links can be swept eg echolink.
My experience is that if you dont automate th
dy is interested I'll report my results in
a couple of
weeks
Ian
G8PWE
- Original Message -
From:
Ian
Ashford
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, November 06, 2003 10:21
PM
Subject: [Repeater-Builder] Can I lose a
cavity using an
At the moment I am testing a 2m 4 can
duplexer with a 25 watt transmitter and all is fine.
I wish to remove one of the cans in the duplexer
and use it for another purpose (part of another duplexer actually)
If I lose a can from the tx arm can I "clean up"
the transmitter with (say) a 1
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