| 1. My Berg is marginal or fails in a ground range check. Why is that?
The Berg Receivers are tuned for maximum range and sensitivity in the air, so if the aircraft is low-sitting, or the antenna is resting on the ground, your antenna down range check may be less than the normal 100’. Have a buddy hold the plane off the ground for you or use a bench to elevate the aircraft slightly and re-check.
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| 2. What is the function of the LED on my Berg 4?
The LED is a simple signal indicator. When it’s powered up but receiving no signal (Tx not on, or on a different channel) the LED will shine. When it’s getting a good locked-on signal from your Tx the LED is off. During invalid signal events in the course of otherwise normal operation it may blink on momentarily as well.
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| 3. What will I see when the Berg is getting a poor/interfered with signal?
As you may have seen during your ground range check, when the signal starts to degrade or if there is significant interference present, the servo reaction will start to slow down just before the fail safe engages. In the air, the aircraft may feel “mushy” or slow to respond to inputs just prior to going into fail-safe mode (if it’s programmed to activate fail-safe). In most cases, the parts tolerances and software filtering keeps a solid connection right up until the time fail-safe has to take over.
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| 4. How should I use the Fail Safe mode?
We recommend you set up your plane’s control inputs to throttle “off”, and then set up the control surfaces for either a gentle turn (neutral elevator and slight rudder for 3 channel models), a spin (partial or full up elevator and partial or full rudder), or a flat spin ( full up elevator, full rudder, and partial opposite aileron) depending on the model and the flying environment.
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| 5. I have a PCM capable radio and my Berg is not working with it. What should I do?
Make sure you set your transmitter to PPM mode.
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| 6. The crystal in my Berg 4L doesn’t seem secure. Is there a problem?
No. In order to maximize the light weight and small size of the 4L, the crystal only has the pin sockets themselves to stabilize it. When inserted to it's stops, it is very securely held within the spring-loaded pin contacts inside the socket.
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| 7. I fly indoors or in areas that tend to be RF unfriendly. Is this receiver a good choice for me?
The Berg receivers are an excellent choice for flying in all conditions and areas, and especially in areas known to pose radio problems. With its “smart” TSR and DSP software filtering, it provides an extra measure of safety by providing you more solid control and noise rejection than other “simple” receiver designs.
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| 8. This receiver is really small. Can I trust it in my large planes?
Absolutely yes. We designed all our Berg receivers to be full range and fully capable of flying any size plane that you’d like to with them. Being bigger and heavier does not automatically mean better for receivers! Our surface mount construction combined with ultra-tight parts tolerances make for the same solid reliability in any size or style aircraft. Don’t let the size fool you, and let the performance speak for itself!
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| 9. So even the Berg 4L is OK to use with a full load of digital servos?
Yes. The power bus on the receiver can handle much more than 5A of shorted current across it. This represents about the same as 4 to 5 fully stalled digital servos.
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| 10. Can I shorten the length of the antenna?
Shortening the antenna reduces both sensitivity (range) and selectivity (ability to sort good signals from bad).
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| 11. Can I use a small Base-loaded antenna if I choose?
High quality base loaded antennas (Azaar, Lightenna, and others) in most cases will not significantly reduce the sensitivity or selectivity of your Berg receiver.
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| 12. I’m flying a 4 channel non-electric plane. Where do I plug in my Rx pack?
Use a “Y” harness on any channel and plug the Rx battery into to the extra plug.
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| 13. If I’m using the fail safe feature and it engages, am I permanently “locked out”?
No. Even when fail safe is engaged, the Berg is still looking for your Tx’s signal. The aircraft will instantly respond to your Tx again once the interference/lost signal event is over.
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| 14. Is there a warranty policy still in effect for “pre-Castle” Bergs?
Yes, any Berg may be repaired or replaced at no charge within one year of purchase, or repaired or replaced at a flat fee after one year.
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| 15. I’ve had a crash and my Berg is physically damaged. What do I do?
Like any Castle Creations product, it can be repaired or replaced for a reasonable fee. Contact us for prices and return procedure.
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| 16. I have a solid red LED on my Berg receiver. Why?
The solid red LED is an indication that the receiver is rejecting many (if not all) frames it is picking up. If you are testing indoors, move outside. Homes are a breeding ground for radio frequency (RF) noise. RF interferes with all receivers, and can cause improper or complete loss of operation. Also, make sure you have your transmitter at least 1 foot away from the receiver, that you turn the transmitter on BEFORE powering the receiver, and the receiver is approximately 4ft. off the ground (chest height). If the LED is still on, try changing crystals. You may have gotten a bad one (yes, even a brand new crystal can be bad). If your problem is still not resolved contact tech support.
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| 17. I have heard that I can use GWS/Cirrus/etc. crystals with my Berg receiver. Is this true? What are the potential problems with using another brand of crystal?
We STRONGLY recommend you use a Berg crystal with your Berg receiver. The tolerances of our crystals are 5 parts per million or better, and are the highest tolerance crystal in the r/c industry. Essentially, using another brand crystal can compromise the performance of the Berg. Using a non-Berg crystal also voids your warranty.
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| 18. Can my Berg receiver be used with a buddy box?
Yes and no. It’s totally dependent on which method your master transmitter uses. It will work if the master only looks at the slave transmitter’s stick movements. If the master allows the slave transmitter to do its own processing though, it will not work. To find out which of these pertains to you contact your transmitter manufacturer or simply test it out yourself.
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| 19. Can I upgrade my old Berg 5 or 6 to the new Berg 7 even though it’s working perfectly fine?
Yes. If you’re within warranty (1 year from date of purchase) there is no charge. You only pay $5 shipping. If you’re out of warranty the cost is $30+$5 shipping.
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| 20. Your Berg receivers say they are “full range”. What does that mean?
Answer: That means they have the full 1+ mile range of all other high quality receivers on the market, and will work in ANY airplane or helicopter.
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| 21. I notice your Berg receivers are only available on 72MHz right now. Will you be producing alternate frequencies in the future?
We’ve already started working on 35, 36, 40, 50, and 75MHz versions of our receivers. Keep watching the website for release information.
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