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Old May 19, 2003, 04:00 AM
Freeze
Guest
n/a Posts
Is it possible to use a single conv RX with a dual conv TX?

As long as they are using the same Frequency/Channel? I'm putting together
an order for a cheap electric park flyer and came across an inexpensive
single conversion Hitec receiver that I'd like to use but I have a dual
conversion Tx

Thanks!!!.


Old May 19, 2003, 04:00 AM
Tor Aanonsen
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?


"Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
news:cZ2dnTpn8N40EVqjXTWcrg@comcast.com...
> As long as they are using the same Frequency/Channel? I'm putting together
> an order for a cheap electric park flyer and came across an inexpensive
> single conversion Hitec receiver that I'd like to use but I have a dual
> conversion Tx


There is no such thing as a dual conversion TX.


Old May 19, 2003, 04:00 AM
Freeze
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?


"Tor Aanonsen" <airbaticNO@SPAM.online.no> wrote in message
news:1053265886.320485@gurney...
>
> "Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
> news:cZ2dnTpn8N40EVqjXTWcrg@comcast.com...
> > As long as they are using the same Frequency/Channel? I'm putting

together
> > an order for a cheap electric park flyer and came across an inexpensive
> > single conversion Hitec receiver that I'd like to use but I have a dual
> > conversion Tx

>
> There is no such thing as a dual conversion TX.



You're right!!! I wrongly assumed that a dual conversion receiver would
require a dual conversion transmitter. When I checked this post it made me
look up my transmitter and that is when I realized my error. Having said
that, are there any major downsides to using a single conversion receiver?
Any personal experiences? Where I live there is no one flying R/C within
about 40 miles of my home so interference should not be an issue from other
R/C'ers.

Thanks.


Old May 19, 2003, 04:00 AM
JR
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

One of our guys tried the single conversion Hitec Rx and found it's range
extremely limited. He lost two planes before calling Hitec and then
switching to one of their Electron Rx's. A lot depends on your definition of
a park flyer. If you are going to fly the very small ones, in close, the
single conversion will probably do fine. If you are going to fly one with a
little more power, a little further away, go for the dual conversion. A call
to Hitec may be in order.

Take a look at the prices at Servo City as well, if price is a concern.
Great service and prices. www.servocity.com .

JR

"Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
news:cpydnQnS9NufAlqjXTWcrg@comcast.com...
>
> "Tor Aanonsen" <airbaticNO@SPAM.online.no> wrote in message
> news:1053265886.320485@gurney...
> >
> > "Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
> > news:cZ2dnTpn8N40EVqjXTWcrg@comcast.com...
> > > As long as they are using the same Frequency/Channel? I'm putting

> together
> > > an order for a cheap electric park flyer and came across an

inexpensive
> > > single conversion Hitec receiver that I'd like to use but I have a

dual
> > > conversion Tx

> >
> > There is no such thing as a dual conversion TX.

>
>
> You're right!!! I wrongly assumed that a dual conversion receiver

would
> require a dual conversion transmitter. When I checked this post it made

me
> look up my transmitter and that is when I realized my error. Having said
> that, are there any major downsides to using a single conversion receiver?
> Any personal experiences? Where I live there is no one flying R/C within
> about 40 miles of my home so interference should not be an issue from

other
> R/C'ers.
>
> Thanks.
>
>



Old May 19, 2003, 04:00 AM
Ed Cregger
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

There is no such thing as a dual conversion transmitter.

Ed Cregger


"Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
news:cZ2dnTpn8N40EVqjXTWcrg@comcast.com...
> As long as they are using the same Frequency/Channel? I'm putting

together
> an order for a cheap electric park flyer and came across an inexpensive
> single conversion Hitec receiver that I'd like to use but I have a dual
> conversion Tx
>
> Thanks!!!.
>
>
>



Old May 19, 2003, 04:00 AM
aeropal
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

pdf receiver article:
http://www.bergent.net/SC-DC.pdf
Old May 19, 2003, 04:00 AM
Abel Pranger
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

"Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message news:<cpydnQnS9NufAlqjXTWcrg@comcast.com>...
> "Tor Aanonsen" <airbaticNO@SPAM.online.no> wrote in message
> news:1053265886.320485@gurney...

<snip>
Having said
> that, are there any major downsides to using a single conversion receiver?
> Any personal experiences? Where I live there is no one flying R/C within
> about 40 miles of my home so interference should not be an issue from other
> R/C'ers.


You can have fine performance from a single conversion Rx, if you get
the right one. The Hitec Feather isn't it. The GWS is a lot better
Rx and only costs $28 with crystal from Radical R/C or Balsa Products.

Abel
Old May 19, 2003, 04:00 AM
Paul McIntosh
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

The problem with flying single conversion receivers in the US is the
adjacent channel, and inter-channel interference. Pagers and all sorts of
other nasties "live" between the channels. Any of these can swamp a SC
receiver. In the UK, it isn't quite so bad.

"Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
news:cpydnQnS9NufAlqjXTWcrg@comcast.com...
>
> "Tor Aanonsen" <airbaticNO@SPAM.online.no> wrote in message
> news:1053265886.320485@gurney...
> >
> > "Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
> > news:cZ2dnTpn8N40EVqjXTWcrg@comcast.com...
> > > As long as they are using the same Frequency/Channel? I'm putting

> together
> > > an order for a cheap electric park flyer and came across an

inexpensive
> > > single conversion Hitec receiver that I'd like to use but I have a

dual
> > > conversion Tx

> >
> > There is no such thing as a dual conversion TX.

>
>
> You're right!!! I wrongly assumed that a dual conversion receiver

would
> require a dual conversion transmitter. When I checked this post it made

me
> look up my transmitter and that is when I realized my error. Having said
> that, are there any major downsides to using a single conversion receiver?
> Any personal experiences? Where I live there is no one flying R/C within
> about 40 miles of my home so interference should not be an issue from

other
> R/C'ers.
>
> Thanks.
>
>



Old May 19, 2003, 04:00 AM
Douglas Kaip
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

I have flown single conversion almost exclusively for several years on my
helicopters and have not had any problems.

Now let me clarify that statement.

I have been using JR 9 and 10 channel PCM single conversion receivers and a
6 channel ( I think ) FM receiver ( on a plane ). JR 10SXII and 8103s as
TXs.

On the FM receiver I know that I have been hit, once for sure and possibly
another time. The first time I found out that my muffler had come loose and
was causing an intermittent metal to metal connection. The other time I
never did find a cause, but, there were no other flyers around.

With my PCM receivers I do not think I have been hit at all, even though it
is harder to tell. I have never noticed my servos hold or my throttle go to
IDLE ( failsafe ) so I assume that I have not been hit.

I have flown adjacent channel many times with no problems. The other pilots
were using JR and Futaba equipment. I should add that their equipment was
mid line or top of the line equipment and probably less than 5 years old.

I also have a JR 9 channel ( I think ) dual conversion receiver and, of
course, it works fine.

So what am I saying? I guess that I believe that single conversion can work
just fine, however, I would also strongly suggest that you learn from
others on this NG that have more experience, especially with the receivers
that you mentioned.

Douglas Kaip


Old May 19, 2003, 04:00 AM
Six_O'Clock_High
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

The real issue is not just how close another R/C flyer is, but how much
other radiated energy there is in your area. If you live close to a
television transmitter, you will be operating in what a single conversion RX
will see as a 'hostile environment'. However, if there are not much in the
way of heavy electronics users around you (no factories, not microwave links
and the like) , you may get away with it out of doors. The general rule of
thumb for single conversion RX's that *I* follow is only for indoor stuff.

YMMV


--
Jim Branaum
AMA 1428

Six_O'clock_High
Target_Lock@Guns.com

"Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
news:cpydnQnS9NufAlqjXTWcrg@comcast.com...
>
> "Tor Aanonsen" <airbaticNO@SPAM.online.no> wrote in message
> news:1053265886.320485@gurney...
> >
> > "Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
> > news:cZ2dnTpn8N40EVqjXTWcrg@comcast.com...
> > > As long as they are using the same Frequency/Channel? I'm putting

> together
> > > an order for a cheap electric park flyer and came across an

inexpensive
> > > single conversion Hitec receiver that I'd like to use but I have a

dual
> > > conversion Tx

> >
> > There is no such thing as a dual conversion TX.

>
>
> You're right!!! I wrongly assumed that a dual conversion receiver

would
> require a dual conversion transmitter. When I checked this post it made

me
> look up my transmitter and that is when I realized my error. Having said
> that, are there any major downsides to using a single conversion receiver?
> Any personal experiences? Where I live there is no one flying R/C within
> about 40 miles of my home so interference should not be an issue from

other
> R/C'ers.
>
> Thanks.
>
>
>



Old May 19, 2003, 04:00 AM
James D Jones
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

Freeze wrote:
> "Tor Aanonsen" <airbaticNO@SPAM.online.no> wrote in message
> news:1053265886.320485@gurney...
>
>> "Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
>> news:cZ2dnTpn8N40EVqjXTWcrg@comcast.com...
>>
>>> As long as they are using the same Frequency/Channel? I'm
>>> putting

>>

> together
>
>>> an order for a cheap electric park flyer and came across an
>>> inexpensive single conversion Hitec receiver that I'd like to use
>>> but I have a dual conversion Tx

>>
>> There is no such thing as a dual conversion TX.

>
> You're right!!! I wrongly assumed that a dual conversion receiver
> would require a dual conversion transmitter. When I checked this
> post it made me look up my transmitter and that is when I realized my
> error. Having said that, are there any major downsides to using a
> single conversion receiver? Any personal experiences? Where I live
> there is no one flying R/C within about 40 miles of my home so
> interference should not be an issue from other R/C'ers.
>

Hitec makes great receivers. they also make the one that you are
considering. Unfortunately, it isn't a very good choice. Range is
extremely limited. If you can stand the extra weight, get either the
555 or the new Electron. If not, the GWS single-conversion micro
receivers that I have been using have fine range for use in a park
flyer. They don't reject interference from other transmitters very
well, but that shouldn't be an issue in your case.

Jim - AMA 501383

Old May 19, 2003, 04:00 AM
Paul McIntosh
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

With RC, the interference you need t worry about are high power paging
systems and industrial RC (cranes, etc).

"Six_O'Clock_High" <Target_Lock@Guns.com> wrote in message
news:RBSxa.4465$Io.374447@newsread2.prod.itd.earth link.net...
> The real issue is not just how close another R/C flyer is, but how much
> other radiated energy there is in your area. If you live close to a
> television transmitter, you will be operating in what a single conversion

RX
> will see as a 'hostile environment'. However, if there are not much in

the
> way of heavy electronics users around you (no factories, not microwave

links
> and the like) , you may get away with it out of doors. The general rule

of
> thumb for single conversion RX's that *I* follow is only for indoor stuff.
>
> YMMV
>
>
> --
> Jim Branaum
> AMA 1428
>
> Six_O'clock_High
> Target_Lock@Guns.com
>
> "Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
> news:cpydnQnS9NufAlqjXTWcrg@comcast.com...
> >
> > "Tor Aanonsen" <airbaticNO@SPAM.online.no> wrote in message
> > news:1053265886.320485@gurney...
> > >
> > > "Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
> > > news:cZ2dnTpn8N40EVqjXTWcrg@comcast.com...
> > > > As long as they are using the same Frequency/Channel? I'm putting

> > together
> > > > an order for a cheap electric park flyer and came across an

> inexpensive
> > > > single conversion Hitec receiver that I'd like to use but I have a

> dual
> > > > conversion Tx
> > >
> > > There is no such thing as a dual conversion TX.

> >
> >
> > You're right!!! I wrongly assumed that a dual conversion receiver

> would
> > require a dual conversion transmitter. When I checked this post it made

> me
> > look up my transmitter and that is when I realized my error. Having

said
> > that, are there any major downsides to using a single conversion

receiver?
> > Any personal experiences? Where I live there is no one flying R/C

within
> > about 40 miles of my home so interference should not be an issue from

> other
> > R/C'ers.
> >
> > Thanks.
> >
> >
> >

>
>



Old May 19, 2003, 04:00 AM
Freeze
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?


Thanks all. Something to think about for sure. The pager frequency issue I
did not consider. I live about 300 yards from a pager/cellular tower. I'll
definitely have to reconsider my choice of receiver.



Old May 19, 2003, 04:01 AM
Paul McIntosh
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

Cell towers shouldn't cause any trouble. Cell systems operate around
800mHz. Pager interference is usually seen as intermittent, violent hits.

"Freeze" <goingbald_2000(at)yahoo(dot)com> wrote in message
news:OTWdnQJ3w8NcslWjXTWcqQ@comcast.com...
>
> Thanks all. Something to think about for sure. The pager frequency issue

I
> did not consider. I live about 300 yards from a pager/cellular tower.

I'll
> definitely have to reconsider my choice of receiver.
>
>
>



Old May 20, 2003, 04:00 AM
astroflyer
Guest
n/a Posts
Re: Is it possible to use a single conv RX with a dual conv TX?

On Sun, 18 May 2003 21:12:15 -0400, "Freeze"
<goingbald_2000(at)yahoo(dot)com> wrote:

>
>Thanks all. Something to think about for sure. The pager frequency issue I
>did not consider. I live about 300 yards from a pager/cellular tower. I'll
>definitely have to reconsider my choice of receiver.


Well, I fly regularly at our field with the GWS receivers in my park
flyers. There are TWO cell towers within sight on the hill over
yonder...no more than a mile away. NO interference of any kind,
except when we have five or six planes in the air when I see some hits
presumably from the other transmitters. and this doesn't happen all
the time, only with certain other club members in the air, and only
when it's crowded. Only downside of the towers is that my better half
can reach out and touch me when ever she feels like it <VBG>

Ditto for the other club sites where I've flown...problems in a
crowded environment, but never when only one or two are flying.


cheers
Papa Sharptooth

Bouncing about the living room, my three year old grandson declares
he's "a kangaroo".
"If you're a Kangaroo, what is Grampie", I ask.
His reply: "you a dinosaur"
>
>


 


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