Hi, All, There is often a price to pay for radio sensitivity. Extreme sensitivity comes at the expense of dynamic range.
Better head room can sometimes be gained by higher voltage on the first RF stage. Better FETS also improve the dynamic range. Joe G, W 2 PVY ----- Original Message ----- From: Steve Jacobson <steve.jacob...@visi.com> To: "PC Audio Discussion List" <pc-audio@pc-audio.org> Date: Sunday, May 29, 2011 10:39:20 Subject: Re: CC EP radio was Re: Looking for a table radio > > > Dane and Rich, > > Thank you for your advice. Dane, if I came across as though I was > questioning the overload of the single-conversion unit, please know that was > not my > intention. I was just trying to explain why I was surprised that was the > case. If that wasn't clear, I apologize. > > Best regards, > > Steve Jacobson > > On Sun, 29 May 2011 21:57:45 +1000, Dane Trethowan wrote: > > >Yep, there are some really good radios around but the trouble is its always > >difficult to find a good one, you not only want something which is good and > sensitive but something which is selective. > > >For example the CC Observer radio is extremely sensitive but not very > >selective so if you're trying to receive a weak station beside a strong one > >then you > may have trouble with the strong station leaking over the weaker one making > it inaudible. > > >As I said earlier you do get what you pay for often and the sangean sets are > >a case in point, I spoke about the wooden cabinet tabletop radios that > company makes, they actually build or built radios for CCrane, I think they > built the CCrane, CC+ and CC II. > > >You spoke of battery life? That's one very good point about the CC EP, it > >will run for 350 hours on a set of 4 d size batteries, not bad at all! > > > >On 29/05/2011, at 9:50 PM, Rich De Steno wrote: > > >thx^^;". A very good pocket radio is the Sony ICF-S10MK2 Pocket AM/FM > >Radio, Silver, which is sold by Amazon for only $10. I have used it for > >years and it > is surprisingly sensitive with decent selectivity. It also seems to run > forever on the two AA batteries. > >thx^^;". > >thx^^;". Rich De Steno > >thx^^;". > >thx^^;". > >thx^^;". On 5/29/2011 2:02 AM, Steve Jacobson wrote: > >>> Dane, > >>> > >>> I just wouldn't expect this to be a problem with a double-tuned loop. It > >>> has been pretty common for medium wave radios to only have single > conversion > >>> even when the short wave bands have double conversion. If the loop tunes > >>> too broadly, a strong medium wave station can theoretically overload > even > >>> the front end of a dual conversion radio. Some of the older Sony's > >>> suffered from this, for example. Therefore, I'm disappointed to here > >>> this is the > case. > >>> > >>> Does anyone have recommendations for a sensitive AM and FM pocket radio? > >>> I've been really frustrated with how pocket radios seem to overload > badly > >>> on FM in high-level input areas. I have a Grundig Yachtboy which I like, > >>> but it is a little bigger than I want to carry around and I just don't > >>> listen to > >>> shortwave much any more. > >>> > >>> Best regards, > >>> > >>> Steve Jacobson > >>> > >>> > >>> Best regards, > >>> > >>> Steve Jacobson > >>> > >>> On Sun, 29 May 2011 02:41:07 +1000, Dane Trethowan wrote: > >>> > >>>> Hi! > >>>> Since the CC EP radio got a mention in a roundabout way I'd like to say > >>>> a few words regard this set. > >>>> Yep, its very sensitive no doubt about that but it does have some > >>>> problems and this is understandable given the price, after all $70.00 is > >>>> a very small > >>> price to pay for a radio. > >>> > >>>> If you're living near a very strong medium wave transmitter as I do then > >>>> it may be that your CC EP won't perform at its best due to interference > >>>> from > that > >>> transmitter, this I'm told is due to the "Single Conversion" circuitry > >>> used in the CC EP. > >>> > >>>> To Illustrate the point, suppose you're tuning through the medium wave > >>>> band, you think you're hearing signals from far away when actually > >>>> you're > hearing > >>> what appear to be ghosts or shadows of the local high powered transmitter > >>> instead. > >>> > >>>> The Solution? Well there are several you can try, the most obvious is to > >>>> spend say $50.00 more and purchase the CC SW which has a Dual > Conversion > >>> circuit and you notice the difference straight away. The CC SW is not > >>> perhaps exactly as sensitive as the CC EP but its far more selective for > >>> one > thing > >>> and you certainly don't get the ghosting or shadowing I spoke about for > >>> another, I've several CC Radios and I reckon the CC SW would have to be > the > >>> best CC Radio set I own. > >>> > >>>> I reviewed the CCSW on Blind Cool Tech a little while ago so you'll find > >>>> the review there. > >>>> Blind Cool Tech also has a review of the CC EP from last year and I've > >>>> just done a review of the CC II radio which is more sensitive than the > >>>> CC EP > >>> however it suffers from the same problems due to its single conversion > >>> receiving circuit, this review is still awaiting approval to the blind > >>> cool tech site. > >>> > >>> > >>>> On 02/01/2000, at 5:09 AM, tim cumings wrote: > >>>>> Don I'd recommend the cc radio e p from c crane. It's a portable am/fm > >>>>> analog > >>>>> radio that costs about $70. It has very nice tone and sensitivity and > >>>>> works well on both bands. On > >>>>> Fri, 27 May 2011 20:19:00 com0700, Donald L. Roberts wrote: > >>>>> > >>>>> > >>>>>> I am looking to find an A M F M table radio which doesn't cost much > >>>>>> more > >>>>>> than $100 U.S. The primary considerations are sensitivity, > >>>>>> selectivity, > >>>>>> image rejection, and of course sound quality. Although I don't really > >>>>>> care whether it is PLL or analog, I doubt that much analog stuff is > >>>>>> being manufactured. Obviously, for a bit more than $100, I am not > >>>>>> going > >>>>>> to find a great radio. But please tell me what gives the best bang for > >>>>>> the buck. > >>>>>> > >>>>>> Incidentally, the unit does not need to play COULDs or have audio > >>>>>> inputs. > >>>>>> > >>>>>> Thanks for ideas. > >>>>>> > >>>>>> Don Roberts > >>>>>> > >>>>>> To unsubscribe from this list, send a blank email to: > >>>>>> pc-audio-unsubscr...@pc-audio.org > >>>>> To unsubscribe from this list, send a blank email to: > >>>>> pc-audio-unsubscr...@pc-audio.org > >>> > >>>> To unsubscribe from this list, send a blank email to: > >>>> pc-audio-unsubscr...@pc-audio.org > >>> > >>> > >>> > >>> > >>> To unsubscribe from this list, send a blank email to: > >>> pc-audio-unsubscr...@pc-audio.org > >>> > >thx^^;". > >thx^^;". To unsubscribe from this list, send a blank email to: > >thx^^;". pc-audio-unsubscr...@pc-audio.org > > > >To unsubscribe from this list, send a blank email to: > >pc-audio-unsubscr...@pc-audio.org > > > > > > To unsubscribe from this list, send a blank email to: > pc-audio-unsubscr...@pc-audio.org To unsubscribe from this list, send a blank email to: pc-audio-unsubscr...@pc-audio.org
