[NLRS] 2M Stck help

[Lloyd - N9LB]

Hello Kirk!

As a weak signal operator, I strongly suggest putting the pre-amp in the
shack!

To make the numbers look better, use 7/8 inch hardline ( or larger ).  40 or
50 feet is in the "give away" range for hardline scraps.  The 7/8"
connectors will cost a few bucks ( I see some on ebay for around $25 - if
you can't find them locally.

Also, if you put the pre-amp in the shack, you will need one or two fewer
relays ( and many fewer connectors ) since you would not be sharing the long
transmission line for both RX and TX signals and then splitting RX and TX
signal paths back apart again once it gets to the shack.

Thirdly, consider the safety and reliability factors, tower-top pre-amps and
the accompanying cluster of relays are notoriously problematic and typically
result in a lot of tower climbing for repairs and maintenance.  ( not to
mention the expense of all those additional items. )

73

Lloyd - N9LB  

-----Original Message-----
From: NLRS [mailto:nlrs-bounces at mailman.qth.net] On Behalf Of Kirk P
Sent: Monday, September 05, 2016 4:43 PM
To: NLRS <nlrs at mailman.qth.net>
Subject: [NLRS] 2M Stck help



Ok,

So Ive got a pair of M2 2M12's that Ill use for EME.

I have the power divider, will order phasing cables from M2 so they are
correct.

My feed line will be about 40' of 1/2 Heliax. My amp is the TE Systems 1452G
that does 300w comfortably.

I currently have a ARR preamp AT THE RADIO RX INPUT.

Will it be necessary to have a preamp OUT AT THE ANTENNA?

If so, which is recommended, along with a sequencer I would assume, for use
in this configuration.


(As a FWIW, I used just one of the 2m12's last winter and worked a couple of
stations. I'd hoped to go to 432 but received no ideas on gear for that band
and read that many of the 432 EME stations are no moving to higher bands and
dishes..therefore most of the activity will be on 2m. So, with an additional
2m12 hanging in the garage along with the M2 power divider I guess I might
as well give this all a go on 2m for this winter.)


Thanks for any help...


Kirk, N0KK

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