Busy here building a SSPA for 432 Mhz
Currently using a MRF 186 .. with 8 watt RF in I get about 90 Watt out .. using 26 Volt supply
I could replace the MRF 186 with another RF FET , my power supply can deliver up to 48 Volt with 25 Amp and the heat sink is big .
I am not an " advanced " RF builder so I do not know which FET to select .. there are new ones on the market every week ..
But changing the FET could also mean changing the design .. what kind of parameters are critical if you replace one type FET with the other ??
73's Rick, PA1BVM
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Leif,
Not sure if you have received my recent e-mails? Sent this week.
Maybe phone when convenient?
Apologies to the group for using bandwidth, but maybe my only way to contact Leif due to e-mail failures.
73 de Sam, G4DDK
Dear Friends
Thanks' to Les W2LPL who success installing the EMU1616PCIe under Windows 10
I was able to upgrade my last computer, the previous driver didn't work in
Windows 10 but EMU deliver a new driver and DSPPatchMix utility and now
works under Windows 10, I upgrade over my Windows 7 and all programs remain
the same; VQLogger, WSJT, WSJT-X 1.7, MAP65, Linrad and many other programs,
no problems at all.
I test the EMU1616PCie under windows introducing strong signals and no
glitches or fancy popups.
Work's great
Thank you Les for your test.
73 de Alex, ZS6EME (HB9DRI)
Hi to all EME'rs,
anyone have test the last driver under Windows 10 32/64 bit version 1.31 of
MAYA44 PCIe??
Any problem of sample rate or glitches??
Vy 73 de Gianni, IW4ARD
The message went through...not sure why this message was received
73
Barry VE4MA
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Date: Tue, 29 Nov 2016 12:16:37 -0700 (MST)
From: Barry Malowanchuk <ve4ma(a)shaw.ca>
To: ON4AOI_PDA <on4aoi_pda(a)skynet.be>
Cc: moon-net(a)googlegroups.com, moon-net(a)mailman.pe1itr.com
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In-Reply-To: <007501d24a5d$3ce2dbc0$b6a89340$@be>
Subject: Re: [Moon-Net] Which 432 Mhz feed for a 4.5M dish in combo with
23cm Septum feed
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1DT1AWUILy+bHvUuhrz/2g==
dual dipoles for 432 with a concentric 1.2 WL W2IMU feed...think VK3UM has written it up
Barry VE4MA
----- Original Message -----
From: "ON4AOI_PDA" <on4aoi_pda(a)skynet.be>
To: moon-net(a)mailman.pe1itr.com
Cc: moon-net(a)googlegroups.com
Sent: Tuesday, November 29, 2016 10:25:41 AM
Subject: [Moon-Net] Which 432 Mhz feed for a 4.5M dish in combo with 23cm Septum feed
Hi dish guru’s ,
After lot of reading , vk3um-sm6fhz-ok1dfc-kl6m to name a few I don’t know what will be the best choice anymore.
I have a 4.5M (15ft) dish F/d = 0.45 (unassembled) from RFHAMDESIGN since January waiting to get on a lift crane system ( NEKO 400A)
First intention was for 23cm only with a septum feed ………… but my 4 x 38 elem M2 on 432Mhz are a big pain in the ….
When its dry they work FB even for single yagi stations like TO2EME - PJ7/PE1L - E44CM but asap that it rains or even when humidity gets high
SWR goes up dramatically and kicks out my AMP.
I am for now the only ON qrv on 432Mhz but limited to weather conditions.
Depending on the specs from the 4.5M dish the gain will be equal to the 4 stack except that I will have the benefit of switching H-V ,
With a motor even all in between.
Will it be possible (with min of losses) to have both 23cm (septum feed ) and 70cm mounted together ?
If YES what feed do I need to build or buy for 70cm to have both H and V
If NO what will be my best option for a 4.5M - F/d = 0.45 dish ?
73 Guy ON4AOI – OT7K
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