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#1
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![]() "Jim Williams" wrote in message news ![]() Is the AM reception as weak in the Tivoli PAL as it is in the Model One? How about the Boston Acoustics Receptor (AM Reception)? Thanks, Jim Sangean also has a model that you might want to consider - here's a review: http://www.radiolabs.com/Articles/woodradio2.html I have a preference for portable radios, and recently bought the Grundig S350 which is a decent performer on AM, and has a large enough speaker to have good tone. Perhaps you can post a follow-up and let us know what you end up with and what you think of it - I've been curious about both of the models you mentioned. Good luck. Stephen -- Please remove no and spam from my email address if replying by email. |
#2
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#3
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Jay Heyl wrote in message ...
In article , says... Is the AM reception as weak in the Tivoli PAL as it is in the Model One? How about the Boston Acoustics Receptor (AM Reception)? I was somewhat disappointed in the MW reception of the Recepter. It's definitely not a DX machine as it stands. They did, however, allow the internal ferrite antenna to be very easily replaced with an external antenna. I'm sure the MW reception issue is primarily due to the use of a small internal ferrite bar. Switching to an external antenna that can be easily rotated would improve reception considerably. FM reception on the Recepter is among the best I've heard. -- Jay Hello, Disclaimer: I speak for myself only, and not for Tivoli Audio, nor do I have any connection to Tivoli. I designed the Model One and the PAL electronics. IMHO a PAL will provide good reception of all but the weakest AM stations. The PAL has a 2" ferrite rod antenna which limits the sensitivity to that of radios with a comparable length antenna. On AM, size definitely matters. Both the PAL and the Model One have pretty good sensitivity, and have better than average selectivity and dynamic range. The hi-fi sound is the best part, as most owners will confirm. Mediocre AM sensitivity on the early Model Ones was substantially improved shortly after its' introduction, unfortunately not before it got a poor reputation. If you're trying to get the most distant AM stations a GE Superadio will do better with its 8 inch long antenna. Many digital radios with an internal antenna suffer from self-interference due to HF noise from the digital circuits, and this will limit sensitivity. A Receptor with a long wire or long ferrite rod external antenna should work well, although at some point the input RF stages could either be detuned or overloaded. A high Q tuned loop external antenna improves reception in almost all situations. G. Cook |
#5
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In article ,
(G. Cook) wrote: Jay Heyl wrote in message ... In article , says... Is the AM reception as weak in the Tivoli PAL as it is in the Model One? How about the Boston Acoustics Receptor (AM Reception)? I was somewhat disappointed in the MW reception of the Recepter. It's definitely not a DX machine as it stands. They did, however, allow the internal ferrite antenna to be very easily replaced with an external antenna. I'm sure the MW reception issue is primarily due to the use of a small internal ferrite bar. Switching to an external antenna that can be easily rotated would improve reception considerably. FM reception on the Recepter is among the best I've heard. -- Jay Hello, Disclaimer: I speak for myself only, and not for Tivoli Audio, nor do I have any connection to Tivoli. I designed the Model One and the PAL electronics. IMHO a PAL will provide good reception of all but the weakest AM stations. The PAL has a 2" ferrite rod antenna which limits the sensitivity to that of radios with a comparable length antenna. On AM, size definitely matters. Both the PAL and the Model One have pretty good sensitivity, and have better than average selectivity and dynamic range. The hi-fi sound is the best part, as most owners will confirm. Mediocre AM sensitivity on the early Model Ones was substantially improved shortly after its' introduction, unfortunately not before it got a poor reputation. If you're trying to get the most distant AM stations a GE Superadio will do better with its 8 inch long antenna. Many digital radios with an internal antenna suffer from self-interference due to HF noise from the digital circuits, and this will limit sensitivity. A Receptor with a long wire or long ferrite rod external antenna should work well, although at some point the input RF stages could either be detuned or overloaded. A high Q tuned loop external antenna improves reception in almost all situations. I have owned a Tivoli Model One since they first came out and enjoy it on a daily basis. I usually listen to FM on it at work. I don't pick up any AM inside the concrete and steel building where I work. The AM worked fine at home. Thanks for designing a great radio, which has great sound in a very small footprint. -- Telamon Ventura, California |
#6
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On Mon, 17 May 2004 23:05:04 -0500, Steve Black wrote
(in article ): Also, who sells external ferrite antennas? Also, what is a Hi Q antenna? Thanks again, Steve I'm in a /really/ dead area. This is what I use: http://ccrane.com/am-antenna.asp I also use: http://ccrane.com/select_a_tenna_hardwire.asp [notice this is /not/ the standard model] Gray Shockley ---------------- DX-392 DX-398 RX-320 DX-399 CCradio+ w/RS Loop Justice AM Antenna Torus Tuner (3-13 MHz) Select-A-Tenna --------------------- Vicksburg, MS US |
#7
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In article ,
says... Also, who sells external ferrite antennas? Also, what is a Hi Q antenna? While it might be considered overkill for one of the radios you mentioned, the Quantum QX (http://www.dxtools.com/QX.htm) would most assuredly overcome the limitations of the internal antenna. Another alternative would be the CCRane AM Antenna (formerly the Justice AM Antenna) (http://www.ccrane.com). If you're inclined to experiment, you can make a tuned ferrite antenna fairly easily with about $20 worth of parts (probably less if you can find an old tube radio at a garage sale). Do a search on Google and you should find lots of places with detailed instructions. -- Jay |
#8
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Steve Black wrote in message . ..
G Cook, Thanks for the info. I thought Henry Kloss designed those radios? Was it a collaboration? Also, who sells external ferrite antennas? Also, what is a Hi Q antenna? Thanks again, Steve snip snip Hi Steve, The Model One and PAL are classic Henry Kloss designs. We worked together for many years, from the mid-80's until his death in 2002. I started at Advent in 1972, with the Model 400 as my first FM tuner. Henry was wonderful at recognizing combinations of new and old technologies that would make new and useful products, and then pushing them out as quickly as possible to the market. He conceived the Model One and designed its' acoustics, controls and basic appearance, and financed and project managed. I provided the electronic design which satisfied his requirements for ease of use, high FM dynamic range, low audio distortion, and precise acoustic frequency response equalization. The PAL is the same idea of performance, simplicity and good sound taken into a smaller, portable package. The designs are licensed to Tivoli Audio for manufacture and sales. Again, I do NOT speak for Tivoli or anyone but me, and I am not involved with any Tivoli products besides the Model One or PAL. G. Cook |
#9
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I have owned a Tivoli Model One since they first came out and enjoy it
on a daily basis. ***********rest snipped************ Indeed. I have had mine for over a year and enjoy it a lot. For AM, I keep the rat shack loop next to it, unless it's a local station. Great radio. ~^Monitoring The Spectrum^~ Hammarlund HQ129X /Heathkit Q Multiplier Hammarlund HQ140X Multiple GE P-780's(GREAT BCB Radios) RCA Victor *Strato- World* RCA Victor RJC77W-K(Walnut Grain) 1942 Zenith Wave Magnet 6G 601M Cathedral/ Ross#2311/Rhapsody-MultiBand DX100/394/*SUPER*398/399/402 OMGS Transistor Eight/Realistic 12-1451 Henry Kloss Model One/Bell+HowellSW ~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~* Alpha Delta DX Sloper 57ft. 500ft. 12AWG. (non-terminated) 120ft. 12 AWG Long-Wire 2 Radio Shack Loop Antennas Radio Shack Amplified Antenna 30X30 DiamondLoop(six section 830pf Cap) * Diamond Loop mounted to Lazy Susan TurnTable* *21/2X2ft.FiveSpoked~Penta-Loop~PancakeLoop* ~OptimusCTR-111Cassettte Recorder~ ~Radio Shack 2Speed VOX#43-476~ ~Ramsey Speech Scrambler~ |
#10
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