Topband: MFJ-1026 or ANC-4

[Pete Rimmel]

I use the ANC-4 very successfully on 160 M.  I had at one time a nouse
20 over S-9 which I was able to get down to about S-2 with the noise
canceller...  Later was able to eliminate the noise - A pole pig
transformer on the AC lines 3 blocks away. 

However it did work VERY WELL to eliminate the noise.  

I understand the MFJ works well too.  

I use a PVC octagonal loop helically wound with 240 Turns No 26 enamel
wire and a tuned circuit for the noise antenna... I get it to resonate
with a 120 pf trimmer in series with the coil and a 120 pf trimmer in
series with the 50 Ohm coax to the ANC-4.  It tunes to resonance and can
be rotated with armstrong or TV rotor.  

Pic of the loop arrangement - all 1/2" PVC pipe and fittings below:

                               1        2
                            _________________
                     12    /        |        \  3
                          /         |         \
                          |         |         |
                    11    |         |         | 4
                          |---------+---------| <- tee & cross in middle
                          |         |         | 5 
                     10   |         |         |
                          \         |         / <-- 45 deg angle
                        9  \________|________/  6
                                              <-- 45 deg angle
				8	7
All 12 sections of PVC are 12" long .   I feed it at the bottom center
with a small
piece of perf board used to mount the 2 120 pf trimmers and a SO-239
Coax connector.

Hope this helps. 

73   Pete N8PR


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