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  1. jonwienke

    SDS100: Sacrilege! Can you turn OFF smart-iq?

    I/Q refers to the digital signal demodulating algorithm that allows the scanner to handle simulcast and multipath signals without choking. No, you can't turn off the digital receiver. At least not without shutting the scanner off. The SDS100 does all of its signal processing downstream of the...
  2. jonwienke

    SDS100 review, highs and lows after a couple months

    The same thing applies to favorite lists. Unless you have Location Control turned off in every one of them, in which case your Range setting has no effect on what gets scanned or not scanned at all.
  3. jonwienke

    SDS100 review, highs and lows after a couple months

    Read the article. Setting Range to 50 miles adds 50 miles to whatever service radius is specified in the database. So if something's listed as having a 30-mile service radius, the scanner adds 50 miles to that, and will start scanning it when its 80 miles away. You'll waste a bunch of time...
  4. jonwienke

    Receiving New Maricopa Co. Phase II in Payson, AZ?

    Simulcast reception is very location dependent for receivers not designed for it. There are some places where any radio can receive a simulcast signal perfectly, and other locations where only the SDS scanners will pick up anything. Go mobile with a 436 and a SDS100 connected to a common antenna...
  5. jonwienke

    SDS200 Audio bass level "mitigation".

    Let us know how it works out.
  6. jonwienke

    SDS100 review, highs and lows after a couple months

    Range should never be set higher than 5-10 miles. Read this to understand why: http://www.homepatrol.com/index.php?option=com_content&view=article&id=17
  7. jonwienke

    SDS200 Audio bass level "mitigation".

    The capacitor can be connected either way--that's the point of a non-polar capacitor. Convention is to put the capacitor on the +terminal of the speaker, but as long as neither terminal is grounded, it doesn't really matter. Just connect the capacitor in series with the speaker.
  8. jonwienke

    BC125AT - Very poor reception - cause?

    The only other possibility would be something wedged in the BNC connector, preventing the antenna from connecting properly. Did you check that?
  9. jonwienke

    Receiving New Maricopa Co. Phase II in Payson, AZ?

    It does--3 of them. The 436 is a great scanner, except for receiving simulcast. For everything else, it works well.
  10. jonwienke

    SDS100: Signal strength with open squelch.

    Hold or not, I don't think the scanner is intended to show signal strength when squelch is closed. Even if you're holding, the scanner can still be scanning. When you hold on a trunked system talkgroup, the scanner can still scan multiple frequencies on multiple sites.
  11. jonwienke

    BC125AT - Very poor reception - cause?

    Most likely problem is a static discharge or too much RF hit the antenna, and the protection diodes or the first stage amplifier transistor got smoked. That won't leave any marks on the case, but will bork reception.
  12. jonwienke

    SDS100: Broken battery door clip due to large battery tightness

    The device I linked has the energy storage of approximately 44 AA NiMh rechargeables. How much would they weigh?
  13. jonwienke

    SDS100: Signal strength with open squelch.

    You're only going to see a RSSI reading in a frequency when squelch is open. When you close the squelch, the scanner is scanning.
  14. jonwienke

    436HP charging

    I rewired the battery terminals in parallel, and added a small charger board with a micro-USB port that can be used to power and charge the scanner. I mostly use that, saving wear and tear on the mini USB for programming. https://1drv.ms/f/s!ApJIS-l4xqPtgu9rgW53pX31FxIQVw
  15. jonwienke

    SDS100: Signal strength with open squelch.

    It's normal for signal strength to fluctuate as you drive around. The 5-segment signal strength display on the x36 models is far less precise than the RSSI -dB reading. RSSI has a formally defined meaning, "signal bars" does not. There is no standard for defining what signal strength range...
  16. jonwienke

    SDS200 Audio bass level "mitigation".

    A speaker's inductive impedance doesn't rise significantly above its 8-ohm DC resistance until you reach the top end of its frequency response range. For a simple high-pass filter function as described, it's not really relevant; at 300Hz its impedance is still going to be close to 8 ohms. The...
  17. jonwienke

    SDS100: Broken battery door clip due to large battery tightness

    The SDS100 color display only draws 50mA at full brightness, compared to about 35-40mA for the 436HP. Most of the power is consumed by the backlight, not the LCD itself. The ADC tuner chip draws by itself as much as the 436HP, and there are 2 CPUs that draw considerable power as well. You can...
  18. jonwienke

    SDS100: Broken battery door clip due to large battery tightness

    The BCD436HP uses standard analog RF circuitry, and it draws about 200mA when playing audio with the screen backlight on. With 3 AA batteries, you get a little over 8 hours of battery life. The digital RF circuitry in the SDS100 draws about 700mA under the same conditions. So battery life would...
  19. jonwienke

    BCD536HP: Sentinel State Level Favorites List

    In Sentinel, you can multiple select line items just like in Excel, and export them to a FL. Naming FL with the state makes it easy to tell which "State Police" you're listening to as well.
  20. jonwienke

    SDS200 Audio bass level "mitigation".

    Report how it goes...
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