[NLRS] 2304?

[Dr. Gerald N. Johnson]

I think that is the one he lists as for ATV. I could modify the 
transverter to get the power down to milliwatts, but it has the 1 watt 
ouput wired in. I suppose a length of small coax could absorb the excess 
power too or some MiniCircuits attenuators in my test box.

73, Jerry, K0CQ

On 12/28/2016 8:41 PM, Charlie Betz wrote:
>
>
> Jerry,
>
> Pyro Joe should also have the Spectrian Driver module - that's what I
> currently use. It's a few mW in and gets ~30 watts out. Last time I
> bought one they were going for $145, but they are 12 volt units, class
> A, and pretty easy to get going.
>
> Charlie, N0AKC
>
> On 12/28/2016 8:20 PM, Dr. Gerald N. Johnson wrote:
>>
>>
>> I brought home the 2304 1 watt DEMI transverter from MUD in October. I
>> haven't yet fired it up. Been working on antenna ideas some with a 2x3
>> ft WiFi skeleton reflector including variations on K4QF's log period
>> feed that I published in the proceedings for CSVHF and MUD this year.
>> There is still work to be done there.
>>
>> Living 165 miles from the twin cities and at least that far from the
>> Quad Cities, near the Boondocks
>> (https://www.flickr.com/photos/22711505@N05/24151165432)
>> looking at the propagation data in the International Microwave
>> Handbook and 2304 contest activity for the last couple years of ARRL
>> contests it appears to me that 1 watt even with 20 dB antenna gain
>> isn't going to make those paths work, there might be a chance of
>> working a couple rovers from home, but that can't run up lots of
>> points. And aiming a 20dB gain antenna won't be easy.
>>
>> Looks like if I get on I'll need to either rove to Chicago or the twin
>> cities or add a PA, perhaps 50 watts to stay in the low power class in
>> ARRL contests. Looking at VHF conference and MUD publications for the
>> past decade or so, it appears the most popular PAs come from Pyro
>> Joseph as the Spectrian boards, single or grouped for several hundred
>> watts output. Are there other practical options. There was a post a
>> few weeks ago about another package but when I looked at the
>> conversion article it looked almost as easy to build from scratch as
>> to drag the PA from 1900 to 2304. Looking at Mouser.com I see some
>> reasonably priced 25 to 50 watt GAN parts without internal matching so
>> they are good from HF to a few GHz depending on the part. Has there
>> been any work making them work for multiple bands? Most of the solid
>> state amplifier circuits I've seen are single band using shunt
>> capacitors and a length of line, sometimes a quarter wave as a Pi
>> network transformer and low pass filter. That makes them single band.
>> I have some hardware on hand for 902 and 1296 that it would be nice to
>> get on too, but no working power amps.
>>
>> So what are my options for power on 2304? Used Spectrian, or pay Pyro
>> Joseph's price and go from there?
>>
>> 73, Jerry, K0CQ
>> ______________________________________________________________
>> NLRS mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/nlrs
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:NLRS at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>
> ______________________________________________________________
> NLRS mailing list
> Home: http://mailman.qth.net/mailman/listinfo/nlrs
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:NLRS at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html