We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Topics - NQC

Pages: [1] 2
MW Loggings / WFED : Tubey Or Not Tubey
« on: July 21, 2021, 1121 UTC »
Hey All,

Lately I've been fooling around with a 1950's era Motorola 19F1 HS 230C nine tubey chassis pulled from a floor  console radio phono.

It's a nice rig, with great audio. Currently only using an indoor 25 ft ant and 120 VAC ground. The antenna is wound on a ferrite  tank    with only 3 turns. Cold end of antenna is left ungrounded. Peaking the tank brings things up a good bit. Band opened up kind  of  late , but once it  did things rolled in  nicely.

I really enjoy the nostalgia of seeing and using tubes - NICE orange glow !

Back up /spotter was my ATS 803A solid state ("non tubey") digital portable. Used to line up FED and others- no scale on Moto.

7/20/21 0100 UTC

630 WPRO RI, weak
650 WSRO MA good
660 WFAN NY fair
710 WOR NY fair to good
880 WCBS NY fair to good
1010 WINS NY good  ( I parked there for  a while)
1500 WFED DC good
1510 WMEX MA ( Also parked there for a while -MUCH better format now !)

Also copied a LOT of regionals /locals /graveyards and unid DX.

A few days ago I had KDKA 1020 on the Moto up against a crushing WBZ  on 1030. 'DKA never really puts in a good signal here and is a bit of a tough catch at times.Even my best rigs are often only fair or worse .

A nice long session on BCB.
I am going to improve antenna and design it for eventual Part 15 transmit and BCB /LW receive.

Indoor antennas are obviously not ideal, but I just have to look at it as "involuntary QRP" :).

I also have a 60 ft run of unused telephone pair available. So far it only  grabs a lot of noise, but  it might be  OK to use   as a counterpoise later.

TONS of stuff on bench, but only so much time. Five foot Octoloop nearing completion.It will initially use 660/46 and a wiperless 4 gang  ceramic , 6:1 ball driven.

Yesterday I also refurbished and painted a second set of book shelves and will soon  double my  bedside operating position.


Weather / Elsa
« on: July 10, 2021, 1134 UTC »
Hey All,

Elsa summary here : Not too bad-Gust 67 Cape Cod, almost NO wind at Boston, gust 25 (maybe). Some isolated boats pulled  off moorings /run  aground.

Rain : Only 2" here in the city, but nearby Wellesly had  4.47".

Boston from   the 1st to the 10th July had 7.9 " of rain.

Still "taking on" water here , but not "disappointed" by Elsa's low rainfall total either. We  now need Sun    and more water later (which we may get this week).

At end of storm , vivid deep blue  clearing line pushed up from the SW. Low clouds cruising right along, mid / high clouds had  little movement.Interesting.

 Entire storm edge visible when started to clear- Dark precipitation clouds to North, deep blue to SW.Nice.


MW Loggings / BCB Black Out
« on: July 08, 2021, 1659 UTC »
Hey All.

 During last night's  severe storms,  the AM BCB was wiped out here.

And I don't mean by static crashes, even though there were zillions of those.

The afternoon and evening  BC  band was just simply wiped dead. NO "expected" day time New Yorkers copied.  ALL  of  the normally  "definite" big night time  NYC stations either  didn't show or were still  terrible, LONG after dark.

 ALL Regional stations  evaporated.

Again many crashes, but you could still tell  that there was almost NO propagation from anyone.Also  my local noise didn't help.


The good thing about a completely indoor system is that you notice band changes more .My system    is more "marginalized" .Therefore it is somewhat more  "on the edge" and will crash down  sooner than   a nice  outdoor antenna would. I work  deal with captures much less than 10% of  what   an outdoor antenna would grab. But I do get an easy directional  null of some noise sources. Sometimes , the strongest loop orientation isn't necessarily the best . I swing the rig's direction first and bring in loop to least noise / but still with some signal.Cleaner but quieter.

Didn't try Zoomer 740 but  line  of  sight  local WJIB 740 was excellent on it's loop heading.I also copied Big signal /Big band WSRO 650 which also had no bad signal effects from poor band  conditions. Both are honkin' ground waves and stayed ultra clean , no real static  crashes heard on carrier  when audio went  quiet.


Longwave Loggings / VLF Lighting Direction Finding
« on: July 07, 2021, 1916 UTC »
Hey All,

DF of Dx storms 90 to 120 Mi to my West yesterday PM.

150 Kc somewhat weaker than higher up checks.Kind of a surprise.

Best was around 230 or 250 Kc , also ripping loud  at 520 Kc.

Things seemed to have rolled up or down in signal strength as one rolled 250 to 520 Kc.

Nice to near zero nulls on S  803a rig, gave a decent bearing to storm cluster.

I am working on other LF projects too.

de K

MW Loggings / South Boston , MA Dxpedition
« on: June 27, 2021, 1452 UTC »
Hey All,

6/27/21 1400 UTC -South Boston , MA. Open salt water  for around 2 miles to the SW , then land and eventually to  hilly terrain ( 300 to 600 ASL) at around 10 mi to  SW.

570 WMCA weak, but sort of usable

1010 WINS absolutely nothing, a big surprise since 'INS "usually" does better than 'MCA

1620 pirate , good copy ( see Free Radio section)

 OT, FWIW, this is a KILLER spot for 10 M mobile dx.


Weather / Lightning Strikes
« on: June 23, 2021, 0041 UTC »
Hey All.

4 strikes today within 300 to 400 ft.
Very wild.Heavy rain / lightning tapers down to gentle long duration soaking rains .

We really needed the water.
I am thankful for this rain event and so is my garden.


MW Loggings / Ferrite Coupled Wire Antenna Test
« on: June 22, 2021, 0051 UTC »
Hey All,

I wound a quickie 280 uH ferrite bar with #24 DSC . I went with the big inductance to accommodate my "ultra light"  var cap box , which is kind of on  the low side value wise. A better/bigger var cap might do better , today was  just a quick check of a lash up.

Antenna was 40 ft run out , with another 40 or 60 ft wound on a large oat meal box  for base loading.

Taps on ferrite didn't seem to do too much so far , it seemed to like being fully at the hot end.

Also it liked being horizontal, vertical was much worse. 

The idea of doubling  it back to make it a loop put it into full short and killed everything.

2000 UTC, Sun at 45 degrees West-  so D layer most likely still in full effect.Low to moderate back round  noise, also QRN dx thunder storms ( at 200 + mi)
Receiver ATS 803A- sensitive and digital, but a small Fe bar inside.Narrow AM works really nice.

Test of known hyper weak New Yorkers :

570 WMCA noisy but there, slow QSB weak to sometimes fair, sort of usable.

1010 WINS  slow QSB, , mostly weak , but up to fairly usable at times.

No trace of either station barefoot.

Strong  New Yorkers :

660 WFAN weak audible on Fe, good on wire.
710 WOR   same.
880 WCBS fair on Fe , quite good on wire
1130 WBBR quite strong on wire but pretty bad QRM from a first adjacent local .

Ferrite also brought in a number of fair or stronger overloaded images from locals, WAY off of the   locals true frequency. But there were enough holes to squeak through, the DX frequencies were all clear .

Ferrite positioning kind of fussy ,but manageable.  To sum , some bugs but overall not too  bad.

Might still try long folded "feed line " scheme- maybe 40 or 60 ft top shorted , spaced at 1" . But so far , shorting back killed everything , as mentioned above. We'll see.

Also BIG progress today on 5 ft Octoloop.


MW Loggings / Anyone Else Have Signals Down, Noise Up ?
« on: June 20, 2021, 0004 UTC »
Hey All,

Maybe just the  MW "Summertime Blues", but it's been kind of slow on BCB lately.

Normally BIG New Yorkers 1010 WINS, 880 WCBS , et al, are not "delivering" like they "should". Still quite usable but not at expected  signal levels.Noise is up too.

CFZM 740 has been "missing in action" for quite a while now. They are always dicey (at best) since I am in their null.The QSB on them is also usually fierce, but they did rise up to "decent" levels , "at  times". But not lately .
The best they can muster is the usual "non synchronized flutter " up against WJIB . This always used to happen WELL  before Zoomer  ever became audible. But they haven't been getting past that point. Even the flutter itself is kind of rare now.

How are you guys doing re loggings ? Is your QTH also in the mud lately as well   ?

OT, but Good progress on Octo Loop. Arms are attached onto the gusset plate. Forks done , but need attaching to arms. No base board yet. A few bugs and "evolution" along the way, but getting there.

Kind of a shame, when in the early "raw" state,   I had enough wood for a 7 ft diameter. But it NEVER would have fit into the shop, which has a low ceiling at it's entrance. As is at 5'1", it will only clear by about 3 "or 4" - tight.


Additionally, last night things  (6/20) were still rough.

Tony Orlando's  music  show (on normally rock steady and strong )770 WABC was punctuated by a good amount of  QSB , distortion and noise.
Yet Again , only a bit of  weak flutter from 740  CFZM , mostly zero indication of signal.

Regionals 640 WWNZ, 560 WGAN/WHYN missing.

I love  a challenge :)


Equipment / " Feedline " Antenna - "450 " Ohms
« on: June 08, 2021, 1531 UTC »
Hey All,

I want to try an antenna that would be for temporary use  in areas of possible power line noise.

I envision running 2  insulated  multi stranded   wires  ( AWG size TBA , aluminum vs copper  composition TBA ) ,
 air spaced at 1"   to  "simulate "  foam twin lead in  the  ball park  300 to 450 ohm  range     .
Conductors are  shorted at the elevated end.

I am shooting to build a supposed  folded  vertical "quarter" wave/ "low noise " design  for  1 Mhz. It's a bit unclear to me what length is "ideal" and  what  length actually represents  a TRUE quarter wave when it is  folded .

FWIW, At 1 Mhz a quarter wave MONOpole  would be 234 ft (  for now I am disregarding any "Earth" side considerations such as 45 degree  drooping  radials, buried "spoke" radials, etc). 234 feet is  WAAAAY  TOOOOO TALL !

But I AM thinking about a possibly  alleged "desired" electrical  length of 117 ft.

117 ft is also a "practical " length to actually be able to work with.  I am not sure  whether (2X) 117 ft would  still   only "represent" an 1/8 monopole in reference to the wire run's total  vertical height -OR- whether it acts as a "true" folded 1/4 wave, having one leg running up to full height and one leg running back down to "lawn level" (117 ft "plus" 117 ft).

BTW, I am sure that there is no way I can hang it "fully" vertical. I'd be LUCKY to get it up 40 or 60 ft. So there would probably be more than  HALF of the antenna's  total length arcing over and running fairly low  horizontal to the  lawn (like a kite string). I can probably get    a tie off on a low tree branch at 6 ft or so , then down to radio. Implications ?

I also wonder if  giving this "twin  lead " a few twists is advantageous. I have seen this done when twin lead is actually used to FEED  a "real" antenna (  ie a horizontal dipole ).

For  the  receiver, I'd make  up a 175 or 220 uH (wound with #28) ferrite bar with maybe 4 or 5 "taps" mostly bunched up at the cold end- hopefully one of which winds up  at a ball park  300 ohms or greater (otherwise put, guesswork).
 A  properly spec'd ceramic var cap would be across full coil,so  the project would end up being a twin lead tuned  ferrite  auto transformer air /magnetically coupled to the receiver's internal  ferrite.

I know that design specs  and "rules" are much less important on receive antennas as  opposed to transmit antennas.Also  the "characteristic response" is going to  vary as one moves up or down in frequency away from the "design reference" of 1 Mhz. There is one school of thought that says "Just try it and see how it works". The problem is that I don't have NEARLY as much to time play radio as I would like, so I'd like to get a bit of  back round , input and "predictions" before I forge ahead.

Also, it  can be a bit of  learning experience and  if nothing else, a  theoretical exercise  on how antennas work.

ANY help GREATLY appreciated,

de N1NQC 

MW Loggings / Dxpedition to Wells, Maine
« on: June 06, 2021, 1332 UTC »
Hey All,

 Yesterday I took a day trip to Wells ,on the coast of Maine.

Logged on the car radio at a HUGE salt marsh ,1830 UTC.

570 WMCA Nada, M.I.A.
710 WOR barely any audio
770 WABC barely any audio
880 WCBS barely any audio
660 WFAN barely any audio , maybe a TAD better, up and down in slow QSB.   ( FWIW, 710,770, and 880 couldn't even "find  the ambition" to  give me any QSB :)))

A bit of an education: Despite  being at the  marsh  there was no salt advantage  . The   NYC to Maine  bearing was  nearly ALL over a land path of high loss New England granite. It was nice to find out where the  "dependable" NYC day timers (listed above)  almost completely run out of gas. So being 78 miles north of my normal Boston QTH caused even the BIG New Yorkers to pretty much  find the  end of their string.  MAYBE they would have been  a" bit more  usable" on a BIG antenna, but.....

1010 WCNL Newport ,NH ,at around 110 mi ,mostly barely any audio, but up and down a bit  like 'FAN. Bizarre transmitter - 10 Kw daytime into a 62 ft (!) antenna (  essentially a "dummy load")
1600 WUNR Boston barely any audio, despite 20 kw at 78 miles, but I was mostly out of pattern.
740 WJIB Cambridge, MA, 250 watts into  omni 1/8 wave, mostly barely any audio. Interesting to deliver the same as 'UNR.
730 WJTO Bath ,Maine, 1 Kw omni, 65 Mi ,mostly salt path.Loud and clear. JTO is net control /program origin station for JIB and others around New England.

So , some really cool and interesting very weak signal  daytime work.Fun.

(Also on 150 Kc- ATS 803a:  Surprised  no QRN crashes copied  despite lightning within 100 to 150 Mi to West . So I'm also finding out how a  barefoot (no outboard  loop) ATS  may  on work on LW or BCB. . A sensitive rig , but with a short ferrite bar). The 803 got no  NYC BCB  at all.

Other activities were: beach ( 52 deg water WAY too cold, could only wade up to ankles  :o) seafood, shopping/ flea market with the Mrs. (got a few cool goodies ) ,  cool breezy ride on a  nicely restored antique  trolley at trolley museum,  walk  in pine forest ,countryside driving, etc.

Wx was around 80,humid  and mostly sunny. At times good flows of very cool air off ocean  suddenly gave nice refreshment. At other times , flow would shut down and it got quite warm.  Later on , well after  the ATS  150 Kc LW session, visually  interesting thunderstorms (with infrequent lightning)  built up  to the our distant   West (around  the Lake Winnipesaukee area of NH  and  Northward toward   MT Washington ,NH   ), but we got home before they drifted into the Boston area.

Overall , a GREAT day, felt good to get out and actually be able to DO things.


Pirate Radio History / Confessions of a Former Operator
« on: June 01, 2021, 1154 UTC »
Hey All,

Just kind of  thinking back on the "old days" and the fun we had.

My first "operation" was VERY high up  in upper HF on a frequency that I found out LATER (of course) was  "supposedly" was a    frequency for  "U.S.   Entities  Operations" in   Africa. Not sure if this was just a "legend"  or not . I never copied  anything on frequency and never had any problems (FWIW, Africa may have been in my  dipole null anyways). It made  for an interesting "story" anyways.

The transmitter was a Uniden "export" type rig with mic input modified for an audio patch cord input for pre recorded cassette programming. A  double bracket bank of 6 mini fans - 3 for forced inlet, 3 for pulling discharge, kept the rig sink "cooler".

The  transmitter fed an outboard RF amplifier that was chilled water cooled , with the final power at 180 W peak into a 1/2 dipole.

Everything was powered by a set of  stand alone  car batteries.

I had a number of reports into drop Box 452 Wellsville, NY from the Southwest US and also from Europe. I used to announce my upcoming transmissions via the old "Signals" program on 100 Kw shortwave monster WWCR in Nashville,TN.

The next outlet I had was at  around 10 W AM on 1700 KC into a high helix antenna  that covered  out to around three miles with a "good" or better signal at most locations . No drop box for that operation, but also  a lot of fun , especially on the "Big Christmas Broadcast" each year.

Also I lent a hand at a  local "community based organization" than ran "Allston Brighton Free Radio". It originally was operating on  three  different X band frequencies  all at once to cover different areas. We tried to stay at true part 15 as much as possible .Two  sites  were microwave linked back to the net control location.  Eventually we dropped  the two remote  sites and went with high power at the base location( so much for part 15 ! :))) . I built the BIG antenna antenna for the "beefed up"  operation.We got a LARGE coverage area ( much more than all  the part 15's combined). The mayor of Boston at the time actually came in and did a show with us. He either didn't know or care that  we were  now an unlicensed  "big time" outlet.The operator of ABFR was also  a "consultant" who set up a number of Free Radio stations around the city .One station was  called  "Girlz Radio" run by minority female high school students. They ran  on WAY down on 540 from a commanding hill top site that blanketed a huge area.I got the "Dime Tour" of that facility on one  occasion .The view of the city was phenomenal !

FWIW, some of the ABFR programming was also carried free of charge  on (FCC licensed) WJIB 740 ( 250 watts  day/5 watts night). The owner (Bob Bittner) is BIG into "free speech on the  radio"). His  commercial  free "beautiful music"  network of multiple  stations in New England is inter spaced with such PSA 's as : "Cut up your credit cards, pay cash", "Avoid chains, buy local", philosophical quotes from different folks, etc. For many years he used his own money to keep on air, but now he does a fundraiser to just cover his costs. JIB is the ONLY LICENSED "FREE" radio station I have EVER heard of.

LONG before I met my wife to be, she and her young son did a program on "Radio Free Allston -FM.RFA had a "decent" coverage area, but certainly  was NOT a "big" station either. They were interviewed by the Boston Globe which
 (as quoted in the Superman TV show opening) is  a "great metropolitan newspaper" with a huge subscription circulation, both  locally and  internationally.   The  station got a nice  write up  and then was promptly raided by The F unny C andy C ompany who  shut  them down on the spot. The end.

I also did some "liaison" work  with the Ireland's Dun Loaghaire Local Radio ("DLR") near Dublin which ran local FM and also on shortwave SSB .I still have some  of their programming tapes. FWIW,  I could  copy them  on shortwave here in the  NE US.

I also knew one guy who did  high power FM from the top of a "more than 40 story building" and wiped out 2/3 of the coverage area  of a   distant  legitimate licensed  college station on that frequency. Bad, Pirate, bad >:( ! I eventually got him to "see the wisdom" (and also avoid getting slammed by the FCC) and to shut it  down. He then went over  to a "low" power FM  tx into a TV antenna on a CLEAR  frequency (many miles away    from the skyscraper site) at near sea level.   It covered  nearly  all of his   home town, which was much more acceptable then his prior stunt.

There USED to be  quite a few operations in the Boston area"back in the day". We had up to 4  or more different  Haitians running  at once in the X band (and  1 or 2 in the upper old  AM band as well ) AND some on FM, also other format    stations in the  X  ,old and on FM. Only 1 or 2 Haitians now  left in X, unsure if anybody is  on FM. I  am not much of an FM fan and prefer my friendship with A ncient  M ary.
Now ALL my gear  is  LONG gone,  and it's just a distant fun memory..

I  have been recently  looking at some discrete transistor VERY LOW power  designs for full  band "VFO"coverage . One application would be at "pico" power for use as a piece of "test gear" ( AM BCB BFO, BCB RF bias source, etc). But if  I "pump up" a bit  (  but still at a definite part 15 / QRPpp) it would be nice to be able to  listen to my  programming cassettes on my old     "Boy's" reflex  pocket radio   out in the park, maybe  75 ft away from the Tx.

We'll see.

 de NQC K

Weather / Simply, Rain.
« on: June 01, 2021, 0006 UTC »
Hey All,
Thankful for rain.

We finally got some some   soaking precip, around 3 " in the last 3 days. Nice, gradual and able to seep in. Not a run off deluge. Another inch or so expected in a few days.

The soil should  also  accept    this expected   rain  nicely , now that it is moist, but not saturated.

My thoughts go out to the folks in the  Sierras of California who are in extreme drought conditions and are expedited to go through another Super Fire season. Last year the smoke was visible here in MA.

Southern   Saskatchewan and Southern Manitoba  are also extremely  dry. Smoke from there also been spotted here over they years. Of course it is a shorter path than  from Cali.


Hey All,
I recently picked up a beautiful 1920's variable cap mounted in a heavy oak side sloped enclosure. The cap , dial and panel look almost like new.

The downside was that it  only topped out at 250 Pf , not really high enough for any of    my "serious" uses. The  inductor for the bottom of B'cast  is 400 uH (!) of #28 rectangular five point spiderweb.It looks more like a SAILBOAT than a spider's web :). Space was extremely tight. It's  wound   on a small sheet of vanished writing pad  thin  cardboard. Basically I "tried" to violate EVERY rule of good crystal set building (re L/C ratio, coil shape,  coil form material ,  var cap insulation being  bakelite, etc, etc).

I may try a few outboard tricks to "sort of" help it, but don't expect too much other than locals here.

But it WILL be a NICE piece of "eye candy" with nickel binding posts, cotton wire, etc ,etc. Everything is being  done with  1920's material and look.

My bedside shelving is small and already mostly packed up with gear , but this rig will be small   and should fit .  I'm thinking of a  fun little single dial radio for the local  big guns on an indoor short wire, which is fine.

Years ago I smelted my own "home brew" lead  sulphide material by melting lead and rapidly working in  raw sulfur. It  instantly burst into flames and had to be blown out like a big birthday candle.The  resulting material was black and ugly- NOT pretty and  sparkly like   the silver bearing "steel" galena " that I've also  used   . But BOY, was it HOT- very sensitive and easy to set . Maybe I try  whipping up another   batch  in a small metal cup  for use on this set.


MW Loggings / Finally: WINS daytime !
« on: May 21, 2021, 2309 UTC »
Hey All,

2030 UTC  log,  QTH park across the street, Super radio I with Select- A -Tenna. Sun at 45 deg in the West.

570 WMCA  A  very good   catch ,also a new one for daytime. Being so low in frequency  probably gave it a boost .Weak and  steady but beat up kind of badly  by local 590 WEZE QRM.

660 WFAN strong, Ho Hum , common daytime. Slapped around some w/ QRM from WSRO regional on 650 .

710 WOR, another "expected" daylight station, good signal.No QRM, strongest catch.

880 WCBS also a  daytime common and strong but  also had strong QRM from  local 890

1010 WINS Weak (!), only could be copied with S-A-T  (Others above were usually better with S-A-T, but could go it alone at times.). S-A-T and SR-1 geometry ,alignment and interplay had to be EXACT to 1/8 or 1/4 ". Super easy to  lose.Rapid and  serious flutter that also rose and fell in slow QSB.Yet  another study in propagation. I have wanted this one for many years and finally snagged it ! BOO YEAH !!!  :)

NO sign of 1010 WCNL in NH , even though I swung around and looked for them. During my previous attempt in the  park  CNL was fair or good and WINS was the one that was  missing. Go figure . I  copied  CNL at seaside  10 MI SE of here  maybe a year ago  , so it wasn't a new catch at the park.

For some reason I REALLY like working 1010 re CFRB  ( a bunch  of times , with my QTH in their full dead null. Also ,  had a recent CFRB /CFRX on 6070 Kc ),WCNL and of course "1010 WINS" ( which it DOES !).

Gotta figure out why some day time New Yorker  bang in here and others stink . Could it be transmitter location vs NYC Skyscraper alignment to me, causing a ground wave foul up ? Possible?  Any comments re this ?  I need to draw some  map lines when I get a chance.


Equipment / Dueling Selecta- A Tennas (NOT Banjos)
« on: May 19, 2021, 1259 UTC »
Hey All,

Last night I decided to try out something that I had seen that originally used two  stand alone large/outboard  home brew ferrite bar/ tank "antennas" for Co Channel "pest control" application .

The idea was to  fully null the pest with the receiver's ferrite first.Then place one outboard  bar to boost the desired station  coupling it  along SIDE of the  rig's internal  ferrite and the other outboard bar off the END of the rig's ferrite to deepen the pest's null.

Since I don't have any  big  ferrite, I decided to try two basic/no jack  model Select- A -Tennas instead. The results  were intriguing.

I tuned into "My favorite Co Channel " (starring Ray Walston and Bill Bixby :))) 740 for  CFZM  vs very  local  WJIB which was still huge at 5 watts night power.

The expected orientation did not pan out at all, at least on the Super Radio I and these air core loops.. Trying to deepen JIB's attenuation by aligning one of the loops null to the rig ferrite null did nada, at least for me in this case. Changing the distance , etc, didn't work at all. All  action was  attained  by coupling both loops peaks "broadside" to the ferrite.

Odd, since  loop peaks are  much more "vague" than the "black hole "  of the  null  (after fifty years of playing around I am STILL amazed by radio !).

The best configuration seemed to be having one loop at one end of the ferrite and the other at the opposite end and on the opposite side of the radio cabinet. That way both loops "boosted" the SR-1 for Zoomer but had as much physical separation as possible.The only null action was in the  radio's  ferrite.

Even MORE wacky was that loop closer to JIB loop "liked"  a more  "conventional" 90 degree coupling angle, yet the other one ""needed" to be at 45 degrees in order for the entire set up to work. And of course like  previous single loop  experiments, all placements (rig, loop 1 and loop 2) HAD to be exact to within 1/8 to 1/4 ". If any parameter was off, even a tiny bit, you heard zilch (except a slight or moderate JIB artifact depending on what they were playing).

Zoomer rolled up and down (as usual), but never really came up to much  beyond weak or a bit better , even after a while of being parked on frequency. Zoomer's transmitter  antenna  null is in my direction (not   "optimal"), and also  propagation  seemed kind of  crumby as well.

I  repeatedly tried it "barefoot" , going over to  only the JIB closer loop  during these marginal conditions. No dice.Every time I tried.But when the second loop was brought back in, Zoomer came back in (WHEN the  QSB "cooperated").

So the takeaway ,at least to me under these conditions and set up , is that the second loop  WAS useful, even in this situation of two stations nearly 180 off from each other (which is a "challenge").

The next target is 650 with regional WSRO vs THE LEGEND (WSM). Both are  ALMOST in the SAME direction from me. If I can tame SRO even a tiny bit and  bring SM up a TAD , I'll call it a big victory. "We'll see".

BTW, I  really miss my MFJ 1026 :-[.

Your mileage may vary on all of this  and no warranty is implied :).


Pages: [1] 2