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Thread: Small Portable Radio's?

  1. #3301
    Flashaholic* 5S8Zh5's Avatar
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    Default Re: Small Portable Radio's?

    Quote Originally Posted by StarHalo View Post
    Very abundant and very homogenized; AM is a third foreign language, a third presidential apologist network, and a third sports. FM is 95% automated playlist modern "music", with the remaining 5% split between an adult contemporary music station you might actually tolerate and the college station. Meanwhile over on KEXP Seattle, a live DJ is playing postwar 78s from his collection and discussing their history..
    That few percent of FM is my 100 percent lol. For me, AM is good for oldies, baseball commentary, and news when I want it.

  2. #3302

    Default Re: Small Portable Radio's?

    I used to listen to AM radio when there was bad weather KRMG but when they got a second station on FM I no longer use the AM band as FM sounds better especially when you have stereo output.
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    Flashaholic* 5S8Zh5's Avatar
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    Default Re: Small Portable Radio's?

    Ballgame this afternoon (AAA). Think I'll take the DT-200X. Yup. That's the ticket.



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    Flashaholic mightysparrow's Avatar
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    Default Re: Small Portable Radio's?

    Sangean PR-D12 review is up at the radiojayallen website. AM (MW), FM and seven NOAA weather channels, powered by 4xAA batteries or included switching power supply, 45 presets (20 AM, 20 FM, 5 weather), tuning by knob or button. Seek, Scan, Autoseek, or manual tuning options. 9 or 10k tuning steps on AM. Two alarm timers with buzzer or radio alarm. Adjustable sleep and snooze timers. Amazon price: just over $60. Review indicates good reception on AM, excellent reception on FM and weather.
    Last edited by mightysparrow; 09-09-2019 at 06:37 AM.
    "However vast the darkness, we must supply our own light." -- Stanley Kubrick

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    Flashaholic* 5S8Zh5's Avatar
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    Default Re: Small Portable Radio's?

    Question - is it ok to use energizer lithium batteries with the Sony ICF-SW7600GR?

  6. #3306
    Flashaholic mightysparrow's Avatar
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    Default Re: Small Portable Radio's?

    Quote Originally Posted by 5S8Zh5 View Post
    Question - is it ok to use energizer lithium batteries with the Sony ICF-SW7600GR?
    I'm not an expert on the characteristics of cells of various chemistries, and I don't own or have any knowledge about that particular receiver. That being said, I would guess that there should not be a problem with the voltage of lithium primary AA cells from a quality manufacturer. The initial voltage of the Energizer lithium cells should be around 1.5 volts, like a quality alkaline AA cell.
    "However vast the darkness, we must supply our own light." -- Stanley Kubrick

  7. #3307

    Default Re: Small Portable Radio's?

    Quote Originally Posted by mightysparrow View Post
    I'm not an expert on the characteristics of cells of various chemistries, and I don't own or have any knowledge about that particular receiver. That being said, I would guess that there should not be a problem with the voltage of lithium primary AA cells from a quality manufacturer. The initial voltage of the Energizer lithium cells should be around 1.5 volts, like a quality alkaline AA cell.
    This is incorrect. There is issues with Energizer lithiums (L91/L92) in that they measure around 1.8v new and when the voltage reaches 1.5v not under a load they are pretty much depleted. This high voltage is an issue with some devices as the more batteries in series you have that extra 0.2-0.3v adds up with 4 batteries it can almost equal having an extra cell. Some devices are sensitive to high voltage while others work better. The opposite in ways to this problem is NIMH batteries in that hot off the charger they tend to measure about 1.4v per cell and quickly drop to around 1.3v or so running between 1.2-1.35v most of the charge till they are depleted and this can be a problem as some device end up not working well below 1.3v and there is plenty of capacity left for nimh still I have a few things that on alkalines they run for a year to a year and a half but on nimh they run for about 6 months and some items on alkalines they run for 6-8 months but on Energizer lithiums they run for a year and a half. There are flashlights that the higher voltage of lithium primaries confuse the drivers not allowing for some modes to work till the battery voltage drops from use.
    These picky devices end up causing problems because you can't always use NIMH or lithium primaries and certainly a lot of us try our best to stay away from leakalines.
    Last edited by Lynx_Arc; 09-11-2019 at 11:34 AM.
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  8. #3308
    Flashaholic mightysparrow's Avatar
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    Default Re: Small Portable Radio's?

    Quote Originally Posted by Lynx_Arc View Post
    This is incorrect. There is issues with Energizer lithiums (L91/L92) in that they measure around 1.8v new and when the voltage reaches 1.5v not under a load they are pretty much depleted. This high voltage is an issue with some devices as the more batteries in series you have that extra 0.2-0.3v adds up with 4 batteries it can almost equal having an extra cell. Some devices are sensitive to high voltage while others work better. The opposite in ways to this problem is NIMH batteries in that hot off the charger they tend to measure about 1.4v per cell and quickly drop to around 1.3v or so running between 1.2-1.35v most of the charge till they are depleted and this can be a problem as some device end up not working well below 1.3v and there is plenty of capacity left for nimh still I have a few things that on alkalines they run for a year to a year and a half but on nimh they run for about 6 months and some items on alkalines they run for 6-8 months but on Energizer lithiums they run for a year and a half. There are flashlights that the higher voltage of lithium primaries confuse the drivers not allowing for some modes to work till the battery voltage drops from use.
    These picky devices end up causing problems because you can't always use NIMH or lithium primaries and certainly a lot of us try our best to stay away from leakalines.
    Well, there you have it from someone with information I did not have. As I said, I was guessing on that issue. However, as for the drop in voltage of NiMH cells, some experts have pointed out that NiMH cells have a slower rate of decrease in their voltage than do alkalines, which can be an advantage in many applications/devices that don't require the higher voltage of the alkaline cell.
    "However vast the darkness, we must supply our own light." -- Stanley Kubrick

  9. #3309

    Default Re: Small Portable Radio's?

    Quote Originally Posted by mightysparrow View Post
    Well, there you have it from someone with information I did not have. As I said, I was guessing on that issue. However, as for the drop in voltage of NiMH cells, some experts have pointed out that NiMH cells have a slower rate of decrease in their voltage than do alkalines, which can be an advantage in many applications/devices that don't require the higher voltage of the alkaline cell.
    Yes under a decent load where alkalines sag badly nimh will run close to flat till they are depleted acting as if there is some regulation in the device. That and being able to recharge to top them off so you know what peformance and runtime to expect.
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  10. #3310
    *Flashaholic* StarHalo's Avatar
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    Default Re: Small Portable Radio's?

    Quote Originally Posted by 5S8Zh5 View Post
    Question - is it ok to use energizer lithium batteries with the Sony ICF-SW7600GR?
    Never tried it, don't see any reason why it wouldn't work/be harmful. The low battery indicator would probably not work correctly.

    Alkalines last longer in analog radios, but it'd be interesting to see an alkaline-vs-everything-else runtime comparison in a digitally tuned radio.

  11. #3311
    *Flashaholic* StarHalo's Avatar
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    Default Re: Small Portable Radio's?

    A video visit to a Radio Shack in Idaho, in 2019; looks like the locals love CBs, though there's also a shelf of Sangean products (but do they still have a catalog?):


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    Default Re: Small Portable Radio's?

    This again is very interesting about lithium cells vs. alkaline cells. I've learned much from these posts because Iíve always installed lithium cells in all my radios just because Iíve had so many alkaline cells leak in my lights and radios. Iíve always used lithiums because Iíve never had any of them leak. Who would have ever guessed that I might be damaging my radios installing lithium cells? Luckily, I havenít ruined a radio yet doing so.

    Is the answer internal lithium rechargeable cells that lots of manufacturers are turning to? A lot of people donít like them as theyíre not replaceable and if they die, youíre out of luck to where you can replace regular disposable cells with a trip to the hardware store. How many of us though donít have access to a way of charging? Do we all live so remote that we canít recharge our batteries in a couple of hours?

    Iím a fan of internal rechargeable cells now. I sold a 1st generation iPad Mini last year to purchase a new iPad Mini 4 as my 1st generation Mini wasnít supported any longer by Apple. After over 7 years of hard use, it still recharged to 100% every time and would last 6-7 hours of continued use.

    Maybe the answer is EASILY, REPLACEABLE LiIon rechargeable cells in all radios and no more worrying about alkaleaks or whatever.

  13. #3313
    *Flashaholic* Burgess's Avatar
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    Default Re: Small Portable Radio's?

    I'm also so VERY disappointed to learn that one of my
    2xAA portable radios FORBIDS the use of Energizer L91
    Lithium primary batteries, due to the higher voltage !
    :-(

    So I use Eneloops when possible.

    But my *backup* plan, since I depend heavily on
    L91 cells when SHTF, is to run them down substantially
    in one of my 2-cell AA flashlights, and THEN stick 'em
    into my radio.


    - Adapt
    - Improvise
    - Overcome


    _

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