[Premium-Rx] Antenna question

[Tom M.]

To: ACME Radio and Dynamite Company of the Country of Texas

Gentlemen?

I try to get an improved match with wire antennas.  Last night I was winding a 9:1 transformer for a new receiver.  

See: 
http://www.qrp.pops.net/swl-ant.asp


As a brute force measure you could try a manual ham transceiver antenna tuner or other outboard accessory to improve your match.  I know when using a tuner with transceiver the received signal is much improved.

The 9:1 end fed wire transformer affords a DC ground to your antenna which has benefits although it is not optimal at every frequency.

Since my surveillance files on each member's qth shows that the original author has ample property, a loop antenna might be the thing to try.

Charles H. Hungadunga
Hungadunga, Hungadunga, Hungadunga &  McCormick





________________________________
 From: Mac McCullough <libbysales at austin.rr.com>
To: premium-rx at mailman.qth.net 
Sent: Monday, November 12, 2012 11:35 PM
Subject: [Premium-Rx] Antenna question
 
Readers:  several things prompt this question, foremost I am sorta stuck
here at home with limited mobility for a bit longer.. But I am wanting to
improve my RECEIVER listening ability.. I have ample Premium Rx's  but
honestly I am never satisfied with my antenna efforts when listening beyond
HAM freq's where I typically do have good or great antenna selections to
choose from.. 



But as an example once I want to listen to the AM Broadcast Band my antenna
selection is lame, I have a 100' long wire up and it comes in and I just get
it stabbed into a RX antenna port via some mish/mash of adaptors or such..
never sure or even trying for an IMPEDANCE match of any sorts and I know I
am missing utilizing the RX best performance for lack of a good antenna, I
am sure my noise floor is considerable higher ...  Do most of you try for a
good impedance match or what is your thinking here please ... while most
modern Premium Rx use a 50 ohm input, the R-390 wants 125 or some such
match..  so you can see I have several demands or at least needs I think
deserve more attention that what I am offering at the present ..  



Thanks for all possible help and ideas ..  mac/mc  w5mc    







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