Would you be interested in a 70mhz transceiver ( POLL )

Don't be afraid to ask any questions pertaining to the 4 m band...

Would you be interested in a 70mhz transceiver ?

Poll ended at Tue 3 Apr 2012, 13:08

Yes
37
66%
NO
19
34%
 
Total votes : 56

Would you be interested in a 70mhz transceiver ( POLL )

Postby PD0HNI » Tue 20 Mar 2012, 13:08

Would you be interested in a 70mhz transceiver SSB/FM.

• Frequency: 70MHz - 4m Amateur band (66-88MHz) ( software programmable )
• With the possibility for SSB and FM. (NO CW-AM)
• Operating Voltage - 13.8v
• Output Power: 5/10/25W adjustable
• 250 memory channels, every channel can be named with 32 characters.
• CTCSS/DCS/DTMF/2Tone, 5 Tone decodes and encodes
• Channel step: requires continuous tuning (SSB)
• Filter to reduce noise.
• Squelch adjustable
• DTMF Multi-Function Hand Microphone Included

1. Would you buy a single band 70mhz SSB/FM transceiver ?
2. Would it be interesting to develop a 70mhz transceiver ?
3. Would you spend $ 200 on a 70mhz transceiver ?

Vote, YES or NO
Last edited by PD0HNI on Tue 20 Mar 2012, 21:30, edited 1 time in total.
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4m Transceiver

Postby GM4AFF » Tue 20 Mar 2012, 13:42

I ought to say 'no' as it says 'no CW'. However, we need something even if CW is not available. Surely CW is easier to implement than SSB?

Cheers,
Stewart
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Re: 4m Transceiver

Postby PD0HNI » Tue 20 Mar 2012, 15:51

GM4AFF wrote:I ought to say 'no' as it says 'no CW'. However, we need something even if CW is not available. Surely CW is easier to implement than SSB?

Cheers,
Stewart
GM4AFF


Hi Stewart,

I had in mind to make an extensive poll, but that is not possible ?
With more questions and more answers.
Therefore I had to make short.

And is CW really a must ?

’73 Jan
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Postby GW8ASD » Tue 20 Mar 2012, 16:52

Why would CW be left out?
That seems odd, even if I don't use it there is plenty to be heard on 4M.
Often more CW than FM. :)

Also I fail to see the need for
CTCSS/DCS/DTMF/2Tone, 5 Tone decodes and encodes


Also no need for
250 memory channels, every channel can be named with 32 characters.

There are less than 20, FM channels available so little point in naming them.
I'm not sure what advantage being software programmable would give?

DTMF Multi-Function Hand Microphone Included
Why?

SSB requires continuous tuning not
Channel step: 5/10/12,5/15/20/25/50


Perhaps some more information as to why those facilities are thought necessary but the ones below are omitted?

I'd be interested in a CW/SSB/FM unit, as long as it had AUX in/out, plus keying, for FSK441/JT6M, a high stability frequency source, and a really bomb proof front end, plus external keying output, for a linear.
It would need to be capable of receiving out of the UK band for contacts with the likes of DL and any others that might get permission.
It would also need dual RX, to monitor your own frequency, as well as a possible out of band signal, at the same time, along with full split TX/RX frequency operation.
Possibly a low level, transverter, output for higher bands?

I'm sure there are other things, if there was a wish list. :D

Cheers

Tony
50MHz, and above, from IO83lb
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Postby PD0HNI » Tue 20 Mar 2012, 18:46

GW8ASD wrote:Why would CW be left out?
That seems odd, even if I don't use it there is plenty to be heard on 4M.
Often more CW than FM. :)

Also I fail to see the need for
CTCSS/DCS/DTMF/2Tone, 5 Tone decodes and encodes


Also no need for
250 memory channels, every channel can be named with 32 characters.

There are less than 20, FM channels available so little point in naming them.
I'm not sure what advantage being software programmable would give?

DTMF Multi-Function Hand Microphone Included
Why?

SSB requires continuous tuning not
Channel step: 5/10/12,5/15/20/25/50


Perhaps some more information as to why those facilities are thought necessary but the ones below are omitted?

I'd be interested in a CW/SSB/FM unit, as long as it had AUX in/out, plus keying, for FSK441/JT6M, a high stability frequency source, and a really bomb proof front end, plus external keying output, for a linear.
It would need to be capable of receiving out of the UK band for contacts with the likes of DL and any others that might get permission.
It would also need dual RX, to monitor your own frequency, as well as a possible out of band signal, at the same time, along with full split TX/RX frequency operation.
Possibly a low level, transverter, output for higher bands?

I'm sure there are other things, if there was a wish list. :D

Cheers

Tony


Oke Tony,

First this,
I had in mind to make an extensive poll, but that is not possible ?
With more questions and more answers.
Because this is not possible I had to make it short.
I know that there are a lot off wishes, but keep in mind that the retail price should be under the $ 200.
I’m trying to collect what is really necessary for a cheap 70 mhz (ssb / fm / cw ) transceiver.

The need for CTCSS / ………. (software possibility)
250 memory channels (software possibility)
DTMF microphone …………… ( is oke with first option)
Channel step: ……………………..( I agree better with tuning not)
UK band: It should be European band, ( I think that 66 – 88 mhz is oke ?)

Keep in mind ! all the software possibilities are cheap.
All hardware extras is extra $$

BUT let us get SMART;

If you could develop a 70mhz transceiver for SSB/FM/CW and it had to be under $ 200 what would you do.
Wright down you minimum wishes and put them up here on the forum so I don’t have all the same wishes.
Start at beginning and think what is rely necessary, keep it simple.

'73 Jan
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Postby G3UVR » Tue 20 Mar 2012, 19:33

No......

Will stick to my HF radio driving transverter..

It works now and probably will out perform whatever might arrive in the near future. It also has CW. Thats it..

Denis G3UVR
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Postby PD0HNI » Tue 20 Mar 2012, 19:54

G3UVR wrote:No......

Will stick to my HF radio driving transverter..

It works now and probably will out perform whatever might arrive in the near future. It also has CW. Thats it..

Denis G3UVR


Good for you.

Jan
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Postby M0XTA » Tue 20 Mar 2012, 23:09

I voted yes, but.....

Shame there won't be just one more mode (CW) on the radio...

So what are your plans? Do you have someone to design and build this radio?
Selim M0XTA, formally 2E0EKF
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Postby EI3GYB » Wed 21 Mar 2012, 01:55

Has it anything to do with this here:
http://www.70mhz.org/forum/viewtopic.ph ... sc&start=0
or what is the story about ?

I would like AM and CW included in the rig as well- otherwise I would have no interest....
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Postby ON5VW » Wed 21 Mar 2012, 07:42

Hi,
If it hasn't got CW... not interested.
I personally would prefer CW instead of FM.
My transverter is working fine and has all modes and possibilities of my base transceiver.
73
Marc
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Postby G4KLX » Wed 21 Mar 2012, 08:13

CW is very easy to do. Just build an 800 Hz sine wave (phase shift?) oscillator and feed it into the mic plug in SSB mode. Provided the carrier and opposite sideband suppression are good enough, it'll be indistinguishable from CW generated by other means.

Soon direct sampling SDRs will reach 70 MHz, they currently run out of steam at 60 MHz, and then we can have one box that'll do VLF to 4m, with any mode that you like with filters that outperform any analogue equivalents. The future is bright...

I voted Yes by the way.

Jonathan G4KLX
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Postby M0XTA » Wed 21 Mar 2012, 08:41

EI3GYB wrote:Has it anything to do with this here:
http://www.70mhz.org/forum/viewtopic.ph ... sc&start=0
or what is the story about ?

I would like AM and CW included in the rig as well- otherwise I would have no interest....


Nope it's totally different...
Selim M0XTA, formally 2E0EKF
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Would you be interested in a 70mhz transceiver ?

Postby PD0HNI » Wed 21 Mar 2012, 09:06

Hi All,
The thing is.
I have contact with a company that willing to build a 70mhz transceiver if there is a market !
I have to provide him with the details we would like to have on board.
The retail price should be under the $ 200, if more it is to expensive and it will not sell.
Think simple ………….. do not come with small details.

So we have to come to compromise.
Let put our ideas together and decide what we really like to have.
There are so many radio amateurs with so many ideas.
1. For starters: Single Band.

This has nothing to do with the other thing from PE9PE (dual band)

’73 Jan
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Postby GW8ASD » Wed 21 Mar 2012, 10:08

For me the minimum requirements, to be worth buying a separate unit, are as per my list.
None of the other options would ever be used, however cheap they might be to include.

Needed.
Continuous tuning, min 10Hz steps.
A really good front end as many portable locations have PMR close in frequency.
Obviously, for the same reason, a good TX spec.
Variable output 1W - 10W
Split frequency operation with dual RX.
RX capability outside of UK allocation.
Stability, and calibration, good enough for data modes.
Ability to connect audio to PC with proper TX switching, not VOX, for data modes.
PTT control of external amplifier.
FM nice to have but not 100% necessary.

If it's not going to be SDR then an output at a point suitable for connecting to an SDR to view the whole band.

Anything like that and my order is in now. :D

Cheers

Tony
50MHz, and above, from IO83lb
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Postby VA3QF » Wed 21 Mar 2012, 12:13

Like several others, I would be interested IF it had CW capability (yes, I know I have a G8+3 call but I can do 20wpm on a straight key...)
Regards,
Keith G0RQQ (ex-G8BBP/VA3QF)
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