Friends, I think that Gary has hit on a wonderful idea..... Gary, as I understand it, Roy's set up is almost an exact match for the380, as well, with the 310 being a bit of a strange duck, having

Hi Scott, Thanks for the link to the US Patent reference, and I'll certainly read itover. If I was a businessman I'd certainly be very thankful for this"debate"-- demand for the 7.5" loopstick

You know I was wondering about that. I would think a highly directional antenna in an entertainment radio would be undesirable. You could miss even a local station if the radio was turned in the wrong

--- In ultralightdx@..., "farmerik" > It just got me wondering if I could block signals from more of the sides, and make any portable much more directional on the internal ferrite rod. Thanks -

--- In ultralightdx@..., "Roy" wrote: > > > Hi Jim > > Thank you for the links to the Rider article, I have just had a skim > through but can see it is well written and I will enjoy digesting

Just to throw in my hat, I too appreciate the contributions of everyone concerned, whether they are experimental or discussions of proven radio theory. Each has their own merit. Everything that has

I had a wave trap many years ago, and it was great at blocking adjacent frequencies. What I wanted to do is block stations on the same frequency, but in slightly different directions. In other words

Roy Spot on 20th January 1969 in Hobart - started with 47 others 4 groups of 12 Very few of us still work for Telstra -- I am now with Optus after 30 years exchange install and then design doing

--- In ultralightdx@..., kevin asato wrote: > > That would be your null. > > If there are particular stations/frequencies you want to remove from your reception, maybe a wave trap will be what is

--- In ultralightdx@..., D1028Gary@... wrote: > > Hello Jim, > > Thanks for your amusing comments. Since you have already apologized once > for doubting the 554 uh inductance value in the PL-380

Neil Spot on. I was a T.I.T. with the PMG. Did my first year at Strathfield (NSW) in 1966. That first year we were hammered with AC theory. I really enjoyed the practical especially building the

Hi Roy Yep that will be the next project -- except that I will have to purchase another PL300 as my mother has my old one as she lives in a deep fringe area. Thanks for showing us how to implement

That would be your null. If there are particular stations/frequencies you want to remove from your reception, maybe a wave trap will be what is needed. Do a search on crystal or xtal radios. Those

Hi Jim Thank you for the links to the Rider article, I have just had a skim through but can see it is well written and I will enjoy digesting it. I first learnt about resonance 45 years ago during a

What I am trying to design in my head would be to block AM radio stations from the sides, I guess that is what you mean by Null. But if it could narrow the direction signals are received from, it

Hi Kevin, The FM on my R9012 is terrible (it is the newer version). It picks up the same station at multiple spots on the dial, and it can't pick up several stations that my DT-400W gets with no

Hi Neil Sounds like you are well on the way with your PL-380 I hope we are going to see some pictures when you have got it done. I checked out the project in the Elektor magazine and was able to

There's a short discussion of that antenna in my 9th Edition ARRL Antenna Book in Chapter 14. It may also be in later editions, too, but this is the latest I own. 73, kevin kc6pob

hoped you backed up those words with a bit of action! 73, kevin kc6pob

HiRoy, Thanks for yourcomments, which are appreciated. I think everybodyis in agreement that the loopstick coil inductance providing maximum AMsensitivity in the PL-300WT/ G8 models is typically