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  1. Ronin

    $30.00 garage sale score!

    EXCELLENT SCORE!!
  2. Ronin

    CB Radio 1978

    Wow! Sort of a stroll down memory lane! Very cool segment on the making of the crystals too! Thanks for posting!!
  3. Ronin

    I passed my Tech test

    CONGRATS!! I thought the same thing....Why did I wait so long! :) Go for your General ticket and have fun!!
  4. Ronin

    2 meter skip to England from Virginia

    It looks like your area uses 147.405 MHz as the input of an "odd-split" repeater. The output of that repeater pair is listed as 144.950. I did not go as far as to look if there was a repeater assigned to this pair by coordination, but this pair is allocated for that use in the 2 meter band plan...
  5. Ronin

    can you name this radio?

    Very nice Mark Sidewinder! Does it still work. I think Mark made some od the first SSB 11 meter radios if I am not mistaken. Not this particular model, but an older one from the mid 1960's. Sent from my DROID3 using Tapatalk
  6. Ronin

    Anything happening between 148.000 to 149.000 Mhz?

    Looks like alot of satellite inputs and radio navigation satellites. I also have Civil Air Patrol comms in the lower end of that spectrum.
  7. Ronin

    Sears Road Talker 40 SSB base ?

    I agree.... Keep it. They are very nice radios.... look good and sound good! A guy that I had talked to regularly years ago had one and it always sounded fantastic. Problem with ebay is one day you might get a good buck for your radio and on another day... not nearly what you would like to get...
  8. Ronin

    How to perform the 2sc2999 and Schottky diode swap

    Hi Robb, In the Cobra 19+ and 40+, it appears that they are using 1s2473 diodes, which has basically the same specs as the more common 1n4148 (which is also a direct replacement). Even though the 1s2473's and the 1n4148's are regarded as "fast swicthing" the Schottky still seems to be the better...
  9. Ronin

    How to perform the 2sc2999 and Schottky diode swap

    Cobra 19 Plus and 40 Plus For the 19 Plus, the RF amp transistor is Q101. The detector diode is D103 and the ANL diode is D106. You could also replace the AGC diodes as well: D101 & D102. In your 40 Plus, the RF amp transistor is Q101. The detector diode is D108 and the ANL diode is D110...
  10. Ronin

    How to perform the 2sc2999 and Schottky diode swap

    I have to go with Robb on this. I too have done this mod on several different radios and always have had noticable results. If you are absolutely sure that all the components were installed correctly, then it might be possible that something else is going on with the receiver. It is also not a...
  11. Ronin

    Ned some opinions

    IMO... go with the Imax or the 5/8th ground plane for starters. You have a real good radio and excellent coax so you might as well complete the basics of the station with the best antenna that you can get. Since you will need a power supply with a higher amp rating for the RFX75, I would get...
  12. Ronin

    STATIC STATIC and more STATIC ?? Help

    There are a number of reasons that your noise level drops in the evening and it primarily has to do with less load demand on the power lines. I will assume that you had shut off all the breakers in the house (radio on battery power) and have determined that the RFI is coming from outside the...
  13. Ronin

    I HAVE Questions?

    Next, if you can, shut off all the breakers in the home and have a listen on the AM radio. With what you have done so far, it seems like you will find something creating noise along the power lines or near a pole or transformer outside of your home. The noise that you are hearing from the radio...
  14. Ronin

    I HAVE Questions?

    Since you have the same noise levels on two different radios, there is probably something in your house or neighborhood that is kicking up quite a bit of RFI. I have had everything imaginable over the years that I had to track down and try to find a solution for. As for the Imax, you "might" see...
  15. Ronin

    WWRF LICENSED OPERATOR LIST

    Merry Christmas Tony! Callsign is K3ZOR
  16. Ronin

    Shottkey diode conversion for RCI-2980?

    The PCB should be an EPT-6900 10Z Replace Diodes D30 and D31 (AM detector diodes) with ECG583 Schottky diodes. Replace Diodes D1 and D2 (NB diodes) also with ECG583 Schottky diodes. Also replace Q17 (or marked TR17) which is the RF amplifier with a 2sc2999 or NTE107. These transistors...
  17. Ronin

    Separation of 2 meter and 70 cm Yagis

    A general rule of thumb (at least when mounting antennas horizontally) is to space them at least half the boom length of the higher frequency antenna. I used a 10 element dual polarity at the top of the mast with an 11 element 432 yagi mounted about 4 feet under the 2 meter (4 ft between the...
  18. Ronin

    Why?

    It would depend on a couple things. If you only work family and friends locally, you probably would not need to get a ham license. On the other hand, if you want, need, or like to communicate over longer distances, then ham radio would be the answer. Every band has different propagation...
  19. Ronin

    new guy here wondering about radios

    With an Icom IC-706MkIIG you will certainly have the ability to work any band (or mode) that you so desire. HF antennas can get expensive and large, but a simple hamstick will work fine too (one band at a time) on HF. As was mentioned before, the Yaesu FT-857D is also good and I have talked to...
  20. Ronin

    My 11 meter station

    Nice station Turbogus! I always like the looks and the performance of the Cobra radios. Although I no longer have any of them, at one time I had a Cobra Cam 89, a Cobra 139XLR, and a Cobra 2000GTL. Even though the 2000GTL was an excellent performer, and sure looked nice, I always like the 139XLR...