Re: [App_rpt-users] audio for direct VCO FM
On 01/06/16 15:46, David McGough <kb4fxc@inttek.net> wrote:
As for directly modulating a VCO, that is a complex subject, assuming you need to stay within frequency and bandwidth tolerances, at is typically required. If you have a lab full of test equipment available, and are willing to put in the time designing a proper PLL filter, pulling this off is very do-able, and many have.
Yeah I think you're right there, as others have commented too. A bit awkward. To ebay up a low band maratrac is fine - a $50 radio and $150 freight.. owch.. Steve
Steve, The first thing I would try is to locate some hams closer by that have already obtained a pallet full of surplus radios. If not in NZ, perhaps Australia. At least that should be cheaper shipping than coming from the North America--I think. If that approach doesn't pan out, perhaps some hams here in the USA would be willing to help by obtaining several radios, packaging and shipping as freight. In this scenario, only a few completely assembled radios might be included, with the remaining hardware stripped down to just printed circuit boards, excluding heavy chassis and heatsinks, to reduce shipping weight. Anybody else got any ideas about economically getting radios to NZ??? 73, David KB4FXC On Wed, 1 Jun 2016, Steve Wright wrote:
On 01/06/16 15:46, David McGough <kb4fxc@inttek.net> wrote:
As for directly modulating a VCO, that is a complex subject, assuming you need to stay within frequency and bandwidth tolerances, at is typically required. If you have a lab full of test equipment available, and are willing to put in the time designing a proper PLL filter, pulling this off is very do-able, and many have.
Yeah I think you're right there, as others have commented too. A bit awkward.
To ebay up a low band maratrac is fine - a $50 radio and $150 freight.. owch..
Steve
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I love the Tate radios for Allstar if you can get them there. 73, Eric Guth 4Z1UG Allstar: 28422 QSO Today
The Tate U.S.A. headquarters is close enough to my home that I can walk to it. Unfortunately, they absolutely, positively, will not work on anything wide-band anymore, not even for amateur use. I went and spoke to them in person, and they just won't budge, period, no way. N5ZUA On 6/13/2016 5:29 AM, Eric Guth wrote:
I love the Tate radios for Allstar if you can get them there.
73,
Eric Guth 4Z1UG Allstar: 28422 QSO Today
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Tate is based in New Zealand. Perhaps there are surplus Tate mobiles in the market there. They work great for Allstar. I have a few. From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] On Behalf Of Steve Agee Sent: Monday, June 13, 2016 2:10 PM To: app_rpt-users@ohnosec.org Subject: Re: [App_rpt-users] audio for direct VCO FM The Tate U.S.A. headquarters is close enough to my home that I can walk to it. Unfortunately, they absolutely, positively, will not work on anything wide-band anymore, not even for amateur use. I went and spoke to them in person, and they just won't budge, period, no way. N5ZUA On 6/13/2016 5:29 AM, Eric Guth wrote: I love the Tate radios for Allstar if you can get them there. 73, Eric Guth 4Z1UG Allstar: 28422 QSO Today _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org<mailto:App_rpt-users@ohnosec.org> http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
There are lots of good Tait radios out there and are a great choice for link radios as such like the Maxtracs and Radius GE Pheonix etc. radios. The older Tait radios use Dos sw which is free on the net and some newer use windows based and is free too. So if you get a T2000 radio you can program as you like and no narrow band. However the TB8105/8110/8115s might have new enough FW that forces to narrow band. The FW can be rolled back to allow wide band. I suspect the Tait folks there just dont want to deal with wide band stuff - even though it doesn't apply to ham bands. The NB thing affects all VHF UHF commercial radios sold in the US since 2013. So its not just a Tait thing. Jon VA3RQ On 6/13/2016 8:46 AM, Eric Guth wrote:
Tate is based in New Zealand. Perhaps there are surplus Tate mobiles in the market there. They work great for Allstar. I have a few.
*From:*app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] *On Behalf Of *Steve Agee *Sent:* Monday, June 13, 2016 2:10 PM *To:* app_rpt-users@ohnosec.org *Subject:* Re: [App_rpt-users] audio for direct VCO FM
The Tate U.S.A. headquarters is close enough to my home that I can walk to it. Unfortunately, they absolutely, positively, will not work on anything wide-band anymore, not even for amateur use. I went and spoke to them in person, and they just won't budge, period, no way.
N5ZUA
On 6/13/2016 5:29 AM, Eric Guth wrote:
I love the Tate radios for Allstar if you can get them there.
73,
Eric Guth
4Z1UG
Allstar: 28422
QSO Today
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I use Tait on 900 MHz and down. T800 Series 1 and Series 2 are great repeaters. I use the T2000 class mobiles as link radios and even as digital radios with the MMDVM. 73, Steve N4IRS On 6/13/2016 8:46 AM, Eric Guth wrote:
Tate is based in New Zealand. Perhaps there are surplus Tate mobiles in the market there. They work great for Allstar. I have a few.
*From:*app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] *On Behalf Of *Steve Agee *Sent:* Monday, June 13, 2016 2:10 PM *To:* app_rpt-users@ohnosec.org *Subject:* Re: [App_rpt-users] audio for direct VCO FM
The Tate U.S.A. headquarters is close enough to my home that I can walk to it. Unfortunately, they absolutely, positively, will not work on anything wide-band anymore, not even for amateur use. I went and spoke to them in person, and they just won't budge, period, no way.
N5ZUA
On 6/13/2016 5:29 AM, Eric Guth wrote:
I love the Tate radios for Allstar if you can get them there.
73,
Eric Guth
4Z1UG
Allstar: 28422
QSO Today
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-- "Anything is possible if you don't know what you are talking about." 1st Law of Logic
participants (6)
-
David McGough -
Eric Guth -
REDBUTTON_CTRL -
Steve Agee -
Steve Wright -
Steve Zingman