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Recent content by CrazyFin

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    eagle 5000 / galaxy turbo switch to turn off internal amp

    Oooooh! That was well spotted!! I would have NEVER found that kind of issue... :eek: So you removed the 22K SMD resistor that was on the back of the board? Looks indeed very nice and clean now! :) (y)
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    Petrusse Excalibur 2002 (PTBM131A4X) - TX freq off approx +1.7kHz in all modes and all bands, RX ok

    @nomadradio: Thanks for excellent post! I did find the correct schematics now that has both the fine tune clarifier (RX only) as well as the coarse clarifier (TX and RX and which is called VFO on the Petrusse). It is the PTBM125A4X chassis and I found one good copy at...
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    Petrusse Excalibur 2002 (PTBM131A4X) - TX freq off approx +1.7kHz in all modes and all bands, RX ok

    I measured the voltage at the center pin of the VFO knob on the right side of the front panel and this should affect RX as well as TX freq. The FINE TUNE knob on the 2nd from the left is for RX only. When I measure the voltage at the center pin I have approx 3.897 V in RX (still on ch 20 AM)...
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    Petrusse Excalibur 2002 (PTBM131A4X) - TX freq off approx +1.7kHz in all modes and all bands, RX ok

    Petrusse Excalibur 2002 https://www.cbmuseum.nl/images/petrusse_escalibur_2002.jpg Mainboard is PTBM131A4X which is the same as for example Superstar 2000. Schematics at for example http://www.cbtricks.com/radios/superstar/2000/graphics/superstar_2000_sch.jpg This radio has a FINE TUNE that...
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    Help with HR2510 Final PA mica caps replacement and more.

    Aaaah! Interesting solution! I guess this should work´for other CB:s as well that has a similar final stage as the HR2510 (which are quite many) I feel embarrased now. Should have guessed that right away since I have a similar solution one of the CRT Hercule Turbo:s staring at me from the...
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    Help with HR2510 Final PA mica caps replacement and more.

    Been lurking around here for a while now as well and felt that I just had to post and say that this thread is really great with good examples. I do not currently have the HR2510 (had a couple in the past) but I certainly will be able to use some of the ideas in this thread on my other radios I...
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    symptoms of a bad amplifier pill oscillation?

    @nomadradio: Wonderful! Thanks for the info, all clear now on that part. I´ll check the current draw tonight. I have 3 of the RCI-2990 equivalents (one Galaxy Saturn Turbo and two CRT Hercule Turbo) and all three needs various kinds of repair due to being severly modded and...
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    symptoms of a bad amplifier pill oscillation?

    I am so sorry to nekro post on such an old thread but instead of creating a new thread with identical question I thought I would post my question here. Did you ever get info on what function the trimpot R901 and TR903 transistor (2SD1406) on the RF amp board on RCI-2990 has?
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