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Search: Posts Made By: apstein
Showing results 1 to 18 of 18
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Forum: RC Radios, Transmitters, Receivers, Servos, gyros
05-19-2009, 02:38 PM
Replies: 8
Views: 2,821
Posted By apstein

Kraft Spectrum 6 Transmitter Batteries

Does anyone know the battery configuration, and location in the transmitter, for a Kraft Spectrum 6 Transmitter. I found a couple small spaces in each lower corner but they will hold only three AA,s...
Forum: JR Radio & Spektrum Radios
05-06-2007, 07:25 AM
Replies: 1
Views: 558
Posted By apstein

50 MHz FM Compatibility

At 50 MHz FM, JR and Futaba use the same shift. Does this mean that a JR transmitter will work OK with Futaba receivers and visa versa?

[email protected]
Forum: Futaba Radios Direct support forum
05-06-2007, 07:22 AM
Replies: 2
Views: 575
Posted By apstein

50 MHz FM compatibility

At 50 MHz FM, JR and Futaba use the same shift. Does this mean that a JR transmitter will work OK with Futaba receivers and visa versa?

[email protected]
Forum: Futaba Radios Direct support forum
08-03-2006, 03:02 PM
Replies: 1
Views: 447
Posted By apstein

T6XA FM or PCM?

Is Transmitter T6XA FM or PCM or both switchable?

If FM, is it positive or negative shift on 50 MHz?

[email protected]
arnie, WB4FSV
Forum: Futaba Radios Direct support forum
03-06-2006, 04:08 PM
Replies: 7
Views: 1,218
Posted By apstein

RE: Positive shift vs negative shift

Thanks Krysta, It's amazing how much misinformation is around on this subject.
[email protected]
Forum: Futaba Radios Direct support forum
03-05-2006, 12:17 PM
Replies: 7
Views: 1,218
Posted By apstein

RE: Positive shift vs negative shift

<<Check with Futaba to be sure>> I'm trying to, isn't this forum normally responded to by a Futaba factory person? At least that's what my understanding was.
[email protected]
Forum: Futaba Radios Direct support forum
03-05-2006, 06:15 AM
Replies: 7
Views: 1,218
Posted By apstein

Positive shift vs negative shift

I just purchased some used Futaba equipment after some 20 years with Kraft AM, and I'm befuddled by this positive vs negative shift issue as it relates to receiver compatability.

My hardware is...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
03-03-2006, 06:57 AM
Replies: 32
Views: 8,701
Posted By apstein

RE: Help! reverse polarity charge jack?!

On a similar related topic, my three JR Max Xmtrs show about 3 to 7 ohms resistance between the battery and the charge plug thru the switch. Danny said that they hadn't seen this problem, have any...
Forum: JR Radio & Spektrum Radios
03-01-2006, 06:56 AM
Replies: 4
Views: 510
Posted By apstein

RE: JR Max, 50MHz

Do any of you readers have a spare G type 50 MHz receiver as suggested by Danny above. (910, 236, 329 G or Z series, or 627XZ or G series.)

Arnie, wb4fsv
[email protected]
Forum: JR Radio & Spektrum Radios
02-28-2006, 07:40 AM
Replies: 3
Views: 612
Posted By apstein

RE: XS3 radio reverse polarity

Danny, when you answer this, I'm curious. Since the charge plug is connected to the battery when the transmitter is off, and the entire transmitter is disconnected, what can fail due to reverse...
Forum: JR Radio & Spektrum Radios
02-27-2006, 04:14 PM
Replies: 1
Views: 417
Posted By apstein

JR Max Charge circuit resistance

I have three JR Max PCM transmitters. (One computer, two regular). The positive battery lead has between 3 and 8 ohms of resitance to to the charge jack, depending on which of the three...
Forum: JR Radio & Spektrum Radios
02-27-2006, 11:14 AM
Replies: 4
Views: 510
Posted By apstein

RE: JR Max, 50MHz

Thanks Danny, I suspected as much since I haven't been able to get anything else to work.

Before discovering your forum, I e-mailed Horizon Support, clearly stating that all my units were JR...
Forum: Questions and Answers
02-26-2006, 09:50 AM
Replies: 0
Views: 1,481
Posted By apstein

Futaba Receiver Schematic

I need service data or a schematic for a Futaba Receiver FP-R127DF, or similar. Anyone?

Arnie, [email protected]
wb4fsv
Forum: JR Radio & Spektrum Radios
02-20-2006, 06:49 AM
Replies: 4
Views: 510
Posted By apstein

JR Max, 50MHz

I have recently aquired (via inheritance) three JR Max, PCM Transmitters on 50 MHz. One is "computer", two are not. (My prior RC experience and hardware is limited to Kraft AM on 53 MHz.)

The...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
11-04-2003, 06:06 PM
Replies: 4
Views: 710
Posted By apstein

RE: Ham Freqs for aircraft

The older ham freqs for model control were in the 53 MHz area and were 100kHz channel spacing. Since those frequencies were desired for repeater use, a new recommended set of 20 KHz spaced channels...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
11-04-2003, 06:00 PM
Replies: 4
Views: 710
Posted By apstein

RE: Ham Freqs for aircraft

Thanks, onewasp
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
11-04-2003, 12:38 AM
Replies: 4
Views: 710
Posted By apstein

Ham Freqs for aircraft

What are the "new" 50.xxx MHz channels for R/C aircraft control? I am currently traveling overseas and cannot find this info quickly.
WB4FSV, Arnie
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
11-22-2002, 10:01 PM
Replies: 1
Views: 449
Posted By apstein

Small Servos for use with Kraft Radios

I use Kraft AM series 80 radios and normally use Kraft Servos. Some other brand servos have had some problems. I need small servos for a project and want to know what brands have been used...
Showing results 1 to 18 of 18


 
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