RT Systems has a $25 software program for the new Kenwood TH-D74a.
https://www.rtsystemsinc.com/TH-D74-programming-software-and-USB-cable-s/268...
Uses a Standard USB-A to Micro-B cable or MicroSD card for programming - so there is no need to purchase a cable from RTSystems for this HT!
Clint Bradford, K6LCS Published article, AMSAT Symposium 2008
Will that new KENWOOD do crossband full duplex like the TH D72????
What me worry?
On Dec 3, 2016, at 11:35 PM, Clint Bradford [email protected] wrote:
RT Systems has a $25 software program for the new Kenwood TH-D74a.
https://www.rtsystemsinc.com/TH-D74-programming-software-and-USB-cable-s/268...
Uses a Standard USB-A to Micro-B cable or MicroSD card for programming - so there is no need to purchase a cable from RTSystems for this HT!
Clint Bradford, K6LCS Published article, AMSAT Symposium 2008 _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
NO, it will not!
The TH-D72a does … But true full-duplex for working FM voice birds is not doable on the ’74.
Clint K6LCS http://www.work-sat.com http://www.work-sat.com/
On Dec 4, 2016, at 8:47 AM, Phillip Lontz [email protected] wrote:
Will that new KENWOOD do crossband full duplex like the TH D72????
No it will not. Patrick WD9EWK has written about it and I'm sure he'll chime in.
Dave-KB1PVH
Sent from my Galaxy S7
On Dec 4, 2016 11:47 AM, "Phillip Lontz" [email protected] wrote:
Will that new KENWOOD do crossband full duplex like the TH D72????
What me worry?
On Dec 3, 2016, at 11:35 PM, Clint Bradford [email protected]
wrote:
RT Systems has a $25 software program for the new Kenwood TH-D74a.
and-USB-cable-s/2688.htm
Uses a Standard USB-A to Micro-B cable or MicroSD card for programming -
so there is
no need to purchase a cable from RTSystems for this HT!
Clint Bradford, K6LCS Published article, AMSAT Symposium 2008 _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Phillip,
As Dave KB1PVH said, the answer is "no". The TH-D74 is not capable of cross-band full-duplex operation for working FM satellites, unlike the older TH-D72 which can do that. When you transmit from one VFO or "band" on the TH-D74, the other VFO/"band" is muted.
I have written a bit about how I have used my TH-D74A on satellites, and not just trying to use it with FM satellites, on the QRZ.com satellite forum at:
https://forums.qrz.com/index.php?threads/kenwood-th -d74a-for-satellite-work.540096/
I have used my TH-D74A on both SO-50 and AO-85 in FM, as the downlink receiver when working SSB satellites like AO-73, FO-29, and XW-2F (transmit radio was a Yaesu FT-817ND), and working the orbiting packet digipeaters on the ISS (previously on 145.825 MHz, and now on 437.550 MHz) and NO-84 (when available).
Please e-mail me directly if I can be of further assistance with the TH-D74A on satellites.
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK
On Sun, Dec 4, 2016 at 4:47 PM, Phillip Lontz [email protected] wrote:
Will that new KENWOOD do crossband full duplex like the TH D72????
What me worry?
On Dec 3, 2016, at 11:35 PM, Clint Bradford [email protected]
wrote:
RT Systems has a $25 software program for the new Kenwood TH-D74a.
and-USB-cable-s/2688.htm
Uses a Standard USB-A to Micro-B cable or MicroSD card for programming -
so there is
no need to purchase a cable from RTSystems for this HT!
Clint Bradford, K6LCS Published article, AMSAT Symposium 2008 _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Does it still have the 6k something + wide SSB frontend like the 10+ year old TH-F6a? I read Patrick's post about it and I don't remember any Kenwood rep at Dayton say it would do full duplex. I think Kenwood really missed the boat on this one.
73 Jeff kb2m
-----Original Message----- From: Patrick STODDARD (WD9EWK/VA7EWK) Sent: Sunday, December 04, 2016 12:19 PM To: Phillip Lontz ; [email protected] Subject: Re: [amsat-bb] RTSystems has Software for Kenwood TH-D74a
Phillip,
As Dave KB1PVH said, the answer is "no". The TH-D74 is not capable of cross-band full-duplex operation for working FM satellites, unlike the older TH-D72 which can do that. When you transmit from one VFO or "band" on the TH-D74, the other VFO/"band" is muted.
I have written a bit about how I have used my TH-D74A on satellites, and not just trying to use it with FM satellites, on the QRZ.com satellite forum at:
https://forums.qrz.com/index.php?threads/kenwood-th -d74a-for-satellite-work.540096/
I have used my TH-D74A on both SO-50 and AO-85 in FM, as the downlink receiver when working SSB satellites like AO-73, FO-29, and XW-2F (transmit radio was a Yaesu FT-817ND), and working the orbiting packet digipeaters on the ISS (previously on 145.825 MHz, and now on 437.550 MHz) and NO-84 (when available).
Please e-mail me directly if I can be of further assistance with the TH-D74A on satellites.
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK
On Sun, Dec 4, 2016 at 4:47 PM, Phillip Lontz [email protected] wrote:
Will that new KENWOOD do crossband full duplex like the TH D72????
What me worry?
On Dec 3, 2016, at 11:35 PM, Clint Bradford [email protected]
wrote:
RT Systems has a $25 software program for the new Kenwood TH-D74a.
and-USB-cable-s/2688.htm
Uses a Standard USB-A to Micro-B cable or MicroSD card for programming -
so there is
no need to purchase a cable from RTSystems for this HT!
Clint Bradford, K6LCS Published article, AMSAT Symposium 2008 _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Hi Jeff!
With the TH-D74, you get new features for receive filters. For SSB, the high-cut value has possible options between 2.2 to 3.0 kHz. For CW bandwidth, it can be specified values between 0.3 and 2.0 kHz. On AM, the high-cut value can be between 3.0 and 7.5 kHz. This is, I think, the sort of filtering that the TH-F6A sorely lacked. Having this filtering makes the TH-D74's all-mode receiver work reasonably well, especially as an SSB receiver for satellite downlinks. I am comfortable with using my TH-D74A as an SSB receiver in place of one of my FT-817NDs or an SDR receiver.
The TH-D74 also has an audio recording function, when a microSD card is plugged into the radio. I used that to make recordings of different passes I worked (FM, SSB, packet), and also testing a Bluetooth headset with this radio. I posted those recordings in the "TH-D74A" folder at http://dropbox.wd9ewk.net/ . If you want to hear recordings from SSB satellites specifically, please let me know and I can get you those file names.
I think Kenwood missed the mark a bit with this radio, not designing it to have the cross-band full-duplex capability of the TH-D72 and TH-D7. Since the TH-D74A also operates on the 222 MHz band, it is possible that Kenwood's engineers based the TH-D74 on the design of the TH-F6A, but with lots of improvements and new features that weren't possible with the older radio.
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK
On Sun, Dec 4, 2016 at 5:55 PM, Jeff [email protected] wrote:
Does it still have the 6k something + wide SSB frontend like the 10+ year old TH-F6a? I read Patrick's post about it and I don't remember any Kenwood rep at Dayton say it would do full duplex. I think Kenwood really missed the boat on this one.
73 Jeff kb2m
Hi Patrick, Well I’m glad there is filtering added to the SSB frontend. I remember trying to use a TH-F6a to RX FO-20/29 years ago and the RX bandwidth was a show stopper. The recording option sounds like a real plus for portable ops...
73 Jeff kb2m
From: Patrick STODDARD (WD9EWK/VA7EWK) Sent: Sunday, December 04, 2016 1:18 PM To: Jeff ; [email protected] Subject: Re: [amsat-bb] RTSystems has Software for Kenwood TH-D74a
Hi Jeff!
With the TH-D74, you get new features for receive filters. For SSB,
the high-cut value has possible options between 2.2 to 3.0 kHz. For CW
bandwidth, it can be specified values between 0.3 and 2.0 kHz. On
AM, the high-cut value can be between 3.0 and 7.5 kHz. This is, I
think, the sort of filtering that the TH-F6A sorely lacked.
Having this filtering makes the TH-D74's all-mode receiver work
reasonably well, especially as an SSB receiver for satellite
downlinks. I am comfortable with using my TH-D74A as an SSB
receiver in place of one of my FT-817NDs or an SDR receiver.
The TH-D74 also has an audio recording function, when a microSD
card is plugged into the radio. I used that to make recordings
of different passes I worked (FM, SSB, packet), and also testing
a Bluetooth headset with this radio. I posted those recordings
in the "TH-D74A" folder at http://dropbox.wd9ewk.net/ . If you want
to hear recordings from SSB satellites specifically, please
let me know and I can get you those file names.
I think Kenwood missed the mark a bit with this radio, not designing
it to have the cross-band full-duplex capability of the TH-D72
and TH-D7. Since the TH-D74A also operates on the 222 MHz band, it
is possible that Kenwood's engineers based the TH-D74 on the design
of the TH-F6A, but with lots of improvements and new features
that weren't possible with the older radio.
73!
Patrick WD9EWK/VA7EWK
Twitter: @WD9EWK
On Sun, Dec 4, 2016 at 5:55 PM, Jeff [email protected] wrote:
Does it still have the 6k something + wide SSB frontend like the 10+ year old TH-F6a? I read Patrick's post about it and I don't remember any Kenwood rep at Dayton say it would do full duplex. I think Kenwood really missed the boat on this one.
73 Jeff kb2m
participants (6)
-
Clint Bradford -
Dave Webb KB1PVH -
Jeff -
Jeff -
Patrick STODDARD (WD9EWK/VA7EWK) -
Phillip Lontz