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ID-1 $100 off for Black Friday, thru the 5th.
Just wanted to pass along that I noticed the ID-1 has a $100 instant rebate coupon now thru the 5th (I believe). There is also a $50 gift certificate issued with this radio as well. Below are the links form Icom. As usual final price will vary amongst dealers so check around.
sly n5gqb |
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Minneapolis D-STAR User's Group Meeting Tomorrow, Saturday, 11/20 @ 11:30 am
-----Original Message-----
From: erik westgard To: 'List for people interested in the D Star repeaters' Cc: tlan@...; K0LAV@... Sent: Fri, Nov 19, 2010 4:29 pm Subject: [d-star] User's Group Tomorrow Reminder -----Original Message----- |
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Re: ID-1 power adjustments
Evans F. Mitchell; KD4EFM / WQFK-894
¿ªÔÆÌåÓýPaul, if you still have a copy of the CD I made about a year
ago
you will find the service manual for the ID-1 on it, if not,
let me
know and I will get it emailed to you....
?
?
?
Evans F. Mitchell ? From: D-STAR_23cm@... [mailto:D-STAR_23cm@...] On Behalf Of kj4g Sent: Sunday, November 14, 2010 12:43 PM To: D-STAR_23cm@... Subject: [D-STAR_23cm] ID-1 power adjustments I have four ID-1 radios and since I have purchased a Bird 10K 10watt, 1.1 to
1.6 Ghz slug, I have found the high power output to range from 3 to 6 watts on
each radio.(not even advertised power). |
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Re: ID-1 power adjustments
Also should have N connectors on the Bird. Dummy load should also be rated for 1.2 g. Every little thing matters at that frequency. Some coax will not even work. Adapters are a no, no. Pl-259 are iffy, non teflon ones probably wont work. Dale ----- Original Message ----- From: n7qor@... To: "D-STAR 23cm" Sent: Sunday, November 14, 2010 3:25:40 PM Subject: Re: [D-STAR_23cm] ID-1 power adjustments ? Another matter to consider, in fact one of the most important, is the cable(s) used to connect raio to bird to load. ? I have seen apparent loss of power due to cables / connectors. ?
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Re: ID-1 power adjustments
Hi Paul,
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Show quoted text
I am sure you know this, but I will state it anyway- the power out of the radio is rated into a 50 ohm load. If you are not using a dummy load to determine your output power, you are probably only reading the forward power. The reflected power can be checked by first ensuring you are in RX mode on the transceiver, then rotate the slug so it points opposite the load (make sure the slug is rotated all the way so the arrow is fully rotated 1/2 turn), then transmit and read the reflected power. The total power out of the radio is the forward power, plus the reflected power.? If you are using an antenna while you are making the measurements, be prepared to see the forward/reflected power "dance" around- that is the antenna and/or trees in the near vicinity moving, and changing the loading of the antenna. If you have vertical structures within 10-30 feet or so of the antenna, they can be inducing reflected waves back through the antenna, and through the watt meter.? The only good way to test the radio is to hook it to a dummy load with sufficient capacity to maintain the 50 ohm impedance while you are checking and adjusting the radio.? While you may be able to run the radio at higher power (over the 10 Watts specified), you will most certainly reduce the service life of the output transistor, and perhaps some of the components in the output matching network (check the schematic for part numbers of the subject parts and check their ratings). A good rule of thumb is to 50% de-rate the parts- want 20 Watt capability?- replace any part that isn't rated 40 Watts or above (many parts will be rated in voltage/current values, so develop the wattage capacity from those values). I hope this helps. Regards, Shane? KE7TR On Nov 14, 2010, at 10:43 AM, kj4g wrote:
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Re: ID-1 power adjustments
Another matter to consider, in fact one of the most important, is the cable(s) used to connect raio to bird to load. ? I have seen apparent loss of power due to cables / connectors. ? ----- Original Message ----- From: "Arnold Harding" To: "D-STAR 23cm" Sent: Sunday, November 14, 2010 10:43:48 AM Subject: Re: [D-STAR_23cm] ID-1 power adjustments Just curious... ?What sort of load are you going into? ?What type of connectors on the Bird and load? ?Are you measuring any reflected power from the load? Arnold KQ6DI ----- Original Message ----- From: "kj4g" To: Sent: Sunday, November 14, 2010 9:43 AM Subject: [D-STAR_23cm] ID-1 power adjustments >I have four ID-1 radios and since I have purchased a Bird 10K 10watt, >1.1 to 1.6 Ghz slug, I have found the high power output to range from >3 to 6 watts on each radio.(not even advertised power). > I have heard that there are directions available on how to adjust > the power output and also that the radios are capable of power up to > 20 watts. > Any information about this would be appreciated. I have tried to > research passed posting and couldn't find anything on this issue. > 73, > Paul, KJ4G > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: ?? ?http://groups.yahoo.com/group/D-STAR_23cm/ <*> Your email settings: ?? ?Individual Email | Traditional <*> To change settings online go to: ?? ?http://groups.yahoo.com/group/D-STAR_23cm/join ?? ?(Yahoo! ID required) <*> To change settings via email: ?? ?D-STAR_23cm-digest@... ?? ?D-STAR_23cm-fullfeatured@... <*> To unsubscribe from this group, send an email to: ?? ?D-STAR_23cm-unsubscribe@... <*> Your use of Yahoo! Groups is subject to: ?? ?http://docs.yahoo.com/info/terms/ |
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Re: ID-1 power adjustments
I suppose one other question is What DC voltage are you providing the radio? 12.0 V, 12.6 V, or 13.8 V? The radio is specified at 13.8 V.
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Show quoted text
All of my questions might not make any difference, but it might help someone answer your power questions. Arnold KQ6DI ----- Original Message ----- |
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Re: ID-1 power adjustments
Just curious... What sort of load are you going into? What type of connectors on the Bird and load? Are you measuring any reflected power from the load?
toggle quoted message
Show quoted text
Arnold KQ6DI ----- Original Message -----
From: "kj4g" <pauleakin@...> To: <D-STAR_23cm@...> Sent: Sunday, November 14, 2010 9:43 AM Subject: [D-STAR_23cm] ID-1 power adjustments I have four ID-1 radios and since I have purchased a Bird 10K 10watt, 1.1 to 1.6 Ghz slug, I have found the high power output to range from 3 to 6 watts on each radio.(not even advertised power). |
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ID-1 power adjustments
I have four ID-1 radios and since I have purchased a Bird 10K 10watt, 1.1 to 1.6 Ghz slug, I have found the high power output to range from 3 to 6 watts on each radio.(not even advertised power).
I have heard that there are directions available on how to adjust the power output and also that the radios are capable of power up to 20 watts. Any information about this would be appreciated. I have tried to research passed posting and couldn't find anything on this issue. 73, Paul, KJ4G |
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Re: (W8SS) Best MOBILE ant for ID-1???
¿ªÔÆÌåÓýGee Evans... Where is that Hooter¡¯s car wash exactly??? I would be willing to drive a good distance to test antenna performance there... ? Thanks¡Joe / W8SS / Mesh Engineering / 810-629-5500 ? From: D-STAR_23cm@... [mailto:D-STAR_23cm@...] On Behalf Of Evans F. Mitchell; KD4EFM / WQFK-894
Sent: Friday, October 29, 2010 10:07 PM To: D-STAR_23cm@... Subject: RE: [D-STAR_23cm] (W8SS) Best MOBILE ant for ID-1??? ? ? Joe, this is a HA HA HA reply..... ? ? A 1/4 wave would be best! ? ? I have a 3dBi Larsen Antenna from years past that works just great... but I have to ask in this day in age, what kind of a car wash would you be going through??? Almost every carwash I have visited, is touch free.... ? Other then that, I would not dare take one through a CLOTH WASH unless it is a car wash with 12 Hooter's Girls hand washing the car..... ? 73 ? Evans F. Mitchell ? ? From: D-STAR_23cm@... [mailto:D-STAR_23cm@...] On Behalf Of Dr. Joeseph Mesh ? What is the BEST mobile antenna for 1.2G that will go through a car wash? What¡¯s your opinion??? Thanks¡Joe / W8SS / Mesh Engineering / Trustee & Sysop on D-Star for K8LCD W8SS, W8SSS & K8LCD all on QRZ.com and at drsmesh.com |
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Re: (W8SS) Best MOBILE ant for ID-1???
--- On Fri, 10/29/10, Nik Presser wrote:
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Re: (W8SS) Best MOBILE ant for ID-1???
Evans F. Mitchell; KD4EFM / WQFK-894
¿ªÔÆÌåÓý?
Here is what my 3dBi looks like...
?
?
Evans F. Mitchell ? From: D-STAR_23cm@... [mailto:D-STAR_23cm@...] On Behalf Of Dr. Joeseph Mesh Sent: Friday, October 29, 2010 5:08 PM To: D-STAR_23cm@... Subject: [D-STAR_23cm] (W8SS) Best MOBILE ant for ID-1???
What is the BEST mobile antenna for 1.2G that will go through a car wash? What¡¯s your opinion??? Thanks¡Joe /
W8SS / Mesh Engineering / Trustee & Sysop on D-Star for K8LCD W8SS, W8SSS & K8LCD all on QRZ.com and at drsmesh.com
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Re: (W8SS) Best MOBILE ant for ID-1???
Evans F. Mitchell; KD4EFM / WQFK-894
¿ªÔÆÌåÓýJoe, this is a HA HA HA reply.....
?
?
A 1/4 wave would be best!
?
?
I have a 3dBi Larsen Antenna from years
past
that works just great... but I have to ask in
this
day in age, what kind of a car wash would
you
be going through??? Almost every carwash I
have visited, is touch free....
?
Other then that, I would not dare take one
through
a CLOTH WASH unless it is a car wash with 12 Hooter's
Girls
hand washing the car.....
?
73
?
Evans F. Mitchell ? From: D-STAR_23cm@... [mailto:D-STAR_23cm@...] On Behalf Of Dr. Joeseph Mesh Sent: Friday, October 29, 2010 5:08 PM To: D-STAR_23cm@... Subject: [D-STAR_23cm] (W8SS) Best MOBILE ant for ID-1???
What is the BEST mobile antenna for 1.2G that will go through a car wash? What¡¯s your opinion??? Thanks¡Joe /
W8SS / Mesh Engineering / Trustee & Sysop on D-Star for K8LCD W8SS, W8SSS & K8LCD all on QRZ.com and at drsmesh.com
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Re: (W8SS) Best MOBILE ant for ID-1???
Nik Presser
¿ªÔÆÌåÓýG'day Joe,
?
I didn't think too many antennas would
like nice after going through a car wash :-)
?
I'm using a Diamond SG9500N but I'm not
keen to test it on the local car wash for you though...!
?
Cheers,
?
Nik Presser
VK3BA Geelong, Australia
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(W8SS) Best MOBILE ant for ID-1???
¿ªÔÆÌåÓýWhat is the BEST mobile antenna for 1.2G that will go through a car wash? What¡¯s your opinion??? Thanks¡Joe / W8SS / Mesh Engineering / Trustee & Sysop on D-Star for K8LCD W8SS, W8SSS & K8LCD all on QRZ.com and at drsmesh.com ? ? ? |
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D-Star <-> Analog... it's in the D-Star spec...
D-Star <-> Analog... it's in the D-Star spec...
? ? Posted by: "michaelcarey69" michaelcarey@... michaelcarey69 ? ? Date: Fri Oct 15, 2010 12:56 am ((PDT)) Hi Everybody, I'm not sure if this is common knowledge, I haven't seen it "out there" yet. Apologies if this is old news. As we all know, the original D-Star specification is written in Japanese. There has been a partial translation to English with a document called shogen.pdf describing the main areas of the D-Star protocol. I was looking around Satoshi Yasuda's web page last night. Satoshi was one of the people in the original JARL D-Star working group and is also the original developer of the DV Node Adapter that has become very popular worldwide in varying forms. Anyway, Satoshi has translated some more of the D-Star specification, section 4.2.8 which describes analog to D-star gateway operation. It's called shogen_4_2_8.pdf. (Attached) Basically it describes the operation of an "adapter" which includes an AMBE2020 codec chip and I presume from reading the document, a MSK modem. I am also presuming that to use this function, you need a "special" radio that can encode and decode a D-Star like header containing callsign information that is basically the same as the normal D-Star header. This alternative header is transmitted at 1200bps MSK. My understanding is that one of these radios (which don't exist of course) is a normal FM radio, but with the ability to send and receive the 1200 bps MSK header. When you key up your radio, the header containing URCall, MYCall, RPT1 and RPT2 is transmitted followed by conventional FM audio. The D-Star <-> analog adapter sees this header and then uses the onboard AMBE-2020 to encode the received FM audio and send it though the gateway system. In reverse, an incoming gateway DV stream (from the internet) would have the AMBE DV audio decoded back to analog. The callsign info would be transmitted in the short MSK header at the start of the transmission, followed by the decoded audio in normal analog FM mode.? The users radio would then decode the MSK header and display callsign information. The advantage the those with "normal" FM radios listening to the repeater would be able to hear the decoded audio. It would appear that none of the other slow data info would be transmitted, just the voice portion of the DV stream. I've been thinking all day about this and how it could be implemented with the current D-Star gateway system.? Not having readily available user radios that support this part of the spec would be a stumbling block. The "adapter" part would also need to be developed. I wonder how much else is hidden away in the D-Star spec that has yet to be discovered? Interesting indeed!! Michael. VK5ZEA |
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Re: Kenwood Analog Repeater Interfaced to Icom D-STAR Controller
Hi,
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Show quoted text
Check out my videos showing the prototype ID-RP2C interface in operation. VK5REX C is now in full operation using the equipment you see in the videos. There are a few requirements that need to be met for successful GMSK D-Star "compatible" operation on non-D-Star RF hardware. The radios need be be pure FM, not PM (Phase Modulation). You need flat discriminator output audio and flat TX audio with no high/low pass filtering in place. If you have a radio/repeater that is designed to work with data, you should be OK. The other thing that is a requirement is a fast TX key up time. Although you are using a DV Node Adapter as the GMSK modem, the internal PIC chip isn't handling the TX/RX data. You are driving the GMSK chip directly from the ID-RP2C (via the interface) and as such you have no ability to add a transmit delay to the data. If the TX radio doesn't key up fast enough, the D-Star header might not be received properly by listening stations... and that's not good. DV Node Adapters can be purchased from several different sources. I'm seriously thinking about writing up a proper document that outlines how the ID-RP2C/DV Node Adapter interface operates and how you connect it to a DV Node Adapter... but for now I've been sending out info manually to those that are interested. The interface is fairly straightforward to implement but as you can imagine, there are many different variations of DV Node Adapters and RF hardware that can cause problems. For those wanting to copy what I (and now others) have done, I suggest getting the DV Node Adapter working with your RF hardware first. Use the DVAR Hot Spot software or the DV Node Adapter diagnostic software to sort out any bugs with audio levels first. If you want more info, please don't hesitate to email me. Michael. VK5ZEA --- In D-STAR_23cm@..., ernest bailey <ernest.bailey@...> wrote:
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Re: Kenwood Analog Repeater Interfaced to Icom D-STAR Controller
ernest bailey
¿ªÔÆÌåÓý?Intresting we the south yorkshire repeater group are also looking in to using kendecom MR4 t/ RX units?? any information on the interface would be of help? Ernie G4LUE look at our web site ? ? To: D-STAR_23cm@...; Repeater@...; Repeater-Builder@...; Repeaters@... CC: d-star@...; IllinoisD-STAR@...; WisconsinD-STAR@...; kc9lkz@... From: wb9qzb_groups@... Date: Thu, 7 Oct 2010 07:49:29 -0700 Subject: [D-STAR_23cm] Fwd: Kenwood Analog Repeater Interfaced to Icom D-STAR Controller ? Interesting thread below about Interfacing Kenwood Analog Repeater to Icom D-STAR Controller for Use with D-STAR. Great example of continued innovation of D-STAR technologies by incorporating non-Icom products into D-STAR environment. ----- Forwarded Message ---- From: "dstar_digital@..."
To: dstar_digital@... Sent: Thu, October 7, 2010 8:46:14 AM Subject: [DSTAR_DIGITAL] Digest Number 1161 There are 3 messages in this issue. Topics in this digest: 1a. K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C? ? ? ? From: danielwoodie 1b. Re: K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C? ? ? ? From: John D. Hays 1c. Re: K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C? ? ? ? From: michaelcarey69 Messages ________________________________________________________________________ 1a. K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C ? ? Posted by: "danielwoodie" kc8zum@... danielwoodie ? ? Date: Wed Oct 6, 2010 10:32 pm ((PDT)) The K8BIG Port B D-Star Repeater in Cincinnati, Ohio is successfully running using a Kenwood TKR-850 Interfaced to the Icom ID-RP2C in place of the Icom Band module (ID-RP4000V).? The usable range of the repeater has been effectively doubled from around 25 miles radius to 50-55 Miles radius.? The K8BIG system is on the WCPO-TV Tower overlooking downtown Cincinnati, OH with the antenna at 700' AGL.? There are 3 50,000 Watt FM Radio transmitters, 1 250,000 Watt VHF DTV Transmitter, and 2 3,000 Watt LPTV stations on the same tower along with various commercial VHF/UHF/220 transmitters so the RF environment is pretty harsh - add in the neighboring (2 Blocks) tower with a similar complement of transmitters and it is downright brutal for any radio equipment. The Icom band module was being swamped by the high RF levels at and surrounding the site, causing very poor effective receive sensitivity even after the TX-RX BpBr Cans and an additional band-pass cavity.? I had partially remedied this with one side of a reject-only mobile duplexer, but that introduced around 6 dB of insertion loss.? Even with the 6 dB insertion loss the effective sensitivity was improved.? The Kenwood repeater has a much tighter front end and much better selectivity with adjustable front-end helicals so the additional receive filter is not necessary and the 6 dB insertion loss was removed. After the interface was built we were able to plug and play into the Icom ID-RP2C controller and gateway.? With the exception of the increased range there is no operational difference in the repeater - everything works identically to the Icom band module.? Commands work, data works, D-Rats works, etc. I will be building more of the interfaces shortly which can be used to interface any 9600 baud-capable analog repeater directly to the ID-RP2C.? Anyone interested please let me know. Thanks. Dan Woodie KC8ZUM Messages in this topic (3) ________________________________________________________________________ 1b. Re: K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C ? ? Posted by: "John D. Hays" john@... k7ve ? ? Date: Wed Oct 6, 2010 11:19 pm ((PDT)) ? Great to hear Dan -- I run the desktop version TKR-820 for NW7DR? B but using a node adapter and NI-STAR by G4ULF.? Its also a great little repeater. You can read about it on my blog at On 10/6/2010 10:32 PM, danielwoodie wrote: > > The K8BIG Port B D-Star Repeater in Cincinnati, Ohio is successfully > running using a Kenwood TKR-850 Interfaced to the Icom ID-RP2C in > place of the Icom Band module (ID-RP4000V). The usable range of the > repeater has been effectively doubled from around 25 miles radius to > 50-55 Miles radius. > ... > After the interface was built we were able to plug and play into the > Icom ID-RP2C controller and gateway. With the exception of the > increased range there is no operational difference in the repeater - > everything works identically to the Icom band module. Commands work, > data works, D-Rats works, etc. > > I will be building more of the interfaces shortly which can be used to > interface any 9600 baud-capable analog repeater directly to the > ID-RP2C. Anyone interested please let me know. > > Thanks. > > Dan Woodie > KC8ZUM > -- John D. Hays Amateur Radio Station K7VE <> PO Box 1223 Edmonds, WA 98020-1223 VOIP/SIP: john@... john@...> john@...> Messages in this topic (3) ________________________________________________________________________ 1c. Re: K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C ? ? Posted by: "michaelcarey69" michaelcarey@... michaelcarey69 ? ? Date: Thu Oct 7, 2010 3:31 am ((PDT)) Excellent news Dan, I received your email... just typing a reply up for you. The ID-RP2C/GMSK interface circuit is perfect for repeater installations just like yours. If the Icom repeater hardware is having a rough time with a nasty RF environment... you can make your own repeater that can handle the RF soup a whole lot better without having to junk the rest of your gear. It's just what you need to make add 6m or 10m D-Star repeater to an existing ID-RP2C system, ready for the imminent release of the IC-9100!? Michael. VK5ZEA --- In dstar_digital@..., "danielwoodie" wrote: > > The K8BIG Port B D-Star Repeater in Cincinnati, Ohio is successfully running using a Kenwood TKR-850 Interfaced to the Icom ID-RP2C in place of the Icom Band module (ID-RP4000V).? The usable range of the repeater has been effectively doubled from around 25 miles radius to 50-55 Miles radius.? > > The K8BIG system is on the WCPO-TV Tower overlooking downtown Cincinnati, OH with the antenna at 700' AGL.? There are 3 50,000 Watt FM Radio transmitters, 1 250,000 Watt VHF DTV Transmitter, and 2 3,000 Watt LPTV stations on the same tower along with various commercial VHF/UHF/220 transmitters so the RF environment is pretty harsh - add in the neighboring (2 Blocks) tower with a similar complement of transmitters and it is downright brutal for any radio equipment. > > The Icom band module was being swamped by the high RF levels at and surrounding the site, causing very poor effective receive sensitivity even after the TX-RX BpBr Cans and an additional band-pass cavity.? I had partially remedied this with one side of a reject-only mobile duplexer, but that introduced around 6 dB of insertion loss.? Even with the 6 dB insertion loss the effective sensitivity was improved.? The Kenwood repeater has a much tighter front end and much better selectivity with adjustable front-end helicals so the additional receive filter is not necessary and the 6 dB insertion loss was removed. > > After the interface was built we were able to plug and play into the Icom ID-RP2C controller and gateway.? With the exception of the increased range there is no operational difference in the repeater - everything works identically to the Icom band module.? Commands work, data works, D-Rats works, etc. > > I will be building more of the interfaces shortly which can be used to interface any 9600 baud-capable analog repeater directly to the ID-RP2C.? Anyone interested please let me know. > > Thanks. > > Dan Woodie > KC8ZUM > |
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Kenwood Analog Repeater Interfaced to Icom D-STAR Controller
Interesting thread below about Interfacing Kenwood Analog Repeater to Icom D-STAR Controller for Use with D-STAR. Great example of continued innovation of D-STAR technologies by incorporating non-Icom products into D-STAR environment. ----- Forwarded Message ---- From: "dstar_digital@..." To: dstar_digital@... Sent: Thu, October 7, 2010 8:46:14 AM Subject: [DSTAR_DIGITAL] Digest Number 1161 There are 3 messages in this issue. Topics in this digest: 1a. K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C? ? ? ? From: danielwoodie 1b. Re: K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C? ? ? ? From: John D. Hays 1c. Re: K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C? ? ? ? From: michaelcarey69 Messages ________________________________________________________________________ 1a. K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C ? ? Posted by: "danielwoodie" kc8zum@... danielwoodie ? ? Date: Wed Oct 6, 2010 10:32 pm ((PDT)) The K8BIG Port B D-Star Repeater in Cincinnati, Ohio is successfully running using a Kenwood TKR-850 Interfaced to the Icom ID-RP2C in place of the Icom Band module (ID-RP4000V).? The usable range of the repeater has been effectively doubled from around 25 miles radius to 50-55 Miles radius.? The K8BIG system is on the WCPO-TV Tower overlooking downtown Cincinnati, OH with the antenna at 700' AGL.? There are 3 50,000 Watt FM Radio transmitters, 1 250,000 Watt VHF DTV Transmitter, and 2 3,000 Watt LPTV stations on the same tower along with various commercial VHF/UHF/220 transmitters so the RF environment is pretty harsh - add in the neighboring (2 Blocks) tower with a similar complement of transmitters and it is downright brutal for any radio equipment. The Icom band module was being swamped by the high RF levels at and surrounding the site, causing very poor effective receive sensitivity even after the TX-RX BpBr Cans and an additional band-pass cavity.? I had partially remedied this with one side of a reject-only mobile duplexer, but that introduced around 6 dB of insertion loss.? Even with the 6 dB insertion loss the effective sensitivity was improved.? The Kenwood repeater has a much tighter front end and much better selectivity with adjustable front-end helicals so the additional receive filter is not necessary and the 6 dB insertion loss was removed. After the interface was built we were able to plug and play into the Icom ID-RP2C controller and gateway.? With the exception of the increased range there is no operational difference in the repeater - everything works identically to the Icom band module.? Commands work, data works, D-Rats works, etc. I will be building more of the interfaces shortly which can be used to interface any 9600 baud-capable analog repeater directly to the ID-RP2C.? Anyone interested please let me know. Thanks. Dan Woodie KC8ZUM Messages in this topic (3) ________________________________________________________________________ 1b. Re: K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C ? ? Posted by: "John D. Hays" john@... k7ve ? ? Date: Wed Oct 6, 2010 11:19 pm ((PDT)) ? Great to hear Dan -- I run the desktop version TKR-820 for NW7DR? B but using a node adapter and NI-STAR by G4ULF.? Its also a great little repeater. You can read about it on my blog at On 10/6/2010 10:32 PM, danielwoodie wrote: > > The K8BIG Port B D-Star Repeater in Cincinnati, Ohio is successfully > running using a Kenwood TKR-850 Interfaced to the Icom ID-RP2C in > place of the Icom Band module (ID-RP4000V). The usable range of the > repeater has been effectively doubled from around 25 miles radius to > 50-55 Miles radius. > ... > After the interface was built we were able to plug and play into the > Icom ID-RP2C controller and gateway. With the exception of the > increased range there is no operational difference in the repeater - > everything works identically to the Icom band module. Commands work, > data works, D-Rats works, etc. > > I will be building more of the interfaces shortly which can be used to > interface any 9600 baud-capable analog repeater directly to the > ID-RP2C. Anyone interested please let me know. > > Thanks. > > Dan Woodie > KC8ZUM > -- John D. Hays Amateur Radio Station K7VE <> PO Box 1223 Edmonds, WA 98020-1223 VOIP/SIP: john@... john@...> john@...> Messages in this topic (3) ________________________________________________________________________ 1c. Re: K8BIG Port B Using Kenwood TKR-850 Interfaced to ID-RP2C ? ? Posted by: "michaelcarey69" michaelcarey@... michaelcarey69 ? ? Date: Thu Oct 7, 2010 3:31 am ((PDT)) Excellent news Dan, I received your email... just typing a reply up for you. The ID-RP2C/GMSK interface circuit is perfect for repeater installations just like yours. If the Icom repeater hardware is having a rough time with a nasty RF environment... you can make your own repeater that can handle the RF soup a whole lot better without having to junk the rest of your gear. It's just what you need to make add 6m or 10m D-Star repeater to an existing ID-RP2C system, ready for the imminent release of the IC-9100!? Michael. VK5ZEA --- In dstar_digital@..., "danielwoodie" wrote: > > The K8BIG Port B D-Star Repeater in Cincinnati, Ohio is successfully running using a Kenwood TKR-850 Interfaced to the Icom ID-RP2C in place of the Icom Band module (ID-RP4000V).? The usable range of the repeater has been effectively doubled from around 25 miles radius to 50-55 Miles radius.? > > The K8BIG system is on the WCPO-TV Tower overlooking downtown Cincinnati, OH with the antenna at 700' AGL.? There are 3 50,000 Watt FM Radio transmitters, 1 250,000 Watt VHF DTV Transmitter, and 2 3,000 Watt LPTV stations on the same tower along with various commercial VHF/UHF/220 transmitters so the RF environment is pretty harsh - add in the neighboring (2 Blocks) tower with a similar complement of transmitters and it is downright brutal for any radio equipment. > > The Icom band module was being swamped by the high RF levels at and surrounding the site, causing very poor effective receive sensitivity even after the TX-RX BpBr Cans and an additional band-pass cavity.? I had partially remedied this with one side of a reject-only mobile duplexer, but that introduced around 6 dB of insertion loss.? Even with the 6 dB insertion loss the effective sensitivity was improved.? The Kenwood repeater has a much tighter front end and much better selectivity with adjustable front-end helicals so the additional receive filter is not necessary and the 6 dB insertion loss was removed. > > After the interface was built we were able to plug and play into the Icom ID-RP2C controller and gateway.? With the exception of the increased range there is no operational difference in the repeater - everything works identically to the Icom band module.? Commands work, data works, D-Rats works, etc. > > I will be building more of the interfaces shortly which can be used to interface any 9600 baud-capable analog repeater directly to the ID-RP2C.? Anyone interested please let me know. > > Thanks. > > Dan Woodie > KC8ZUM > |
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Re: Converting Kenwood Analog FM Repeater for Use with D-STAR
This was a great article! I would like to do the same with a Micor. 73, ? ? ? ----- Original Message ----- From: "Mark Thompson" To: "D-STAR 23cm" Cc: IllinoisD-STAR@..., WisconsinD-STAR@..., kc9lkz@..., "ga dstar" , al-dstar@..., d-star@... Sent: Sunday, September 26, 2010 1:05:26 AM Subject: [D-STAR_23cm] Converting Kenwood Analog FM Repeater for Use with D-STAR Converting Kenwood TKR-820 Analog FM Repeater for Use with D-STAR |
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