Batboard

k3td

What is the best way to mount 2 cooling fans to D44 UHF dash mount Spectra set to 15 watts for use as the transmitter in a desktop repeater? I was thinking about one fan on each side PA heat sink with one blowing across the PA and the other blowing away from the PA. Thanks in advance for the advice!

k3td

Thanks everyone for the help - much appreciated!

k3td

Thank you very much for the info. I got an Entitlement ID about 6+ years ago for my original CPS when I had a 5550 UHF mobile. Is another one required for the new CPS 2?

k3td

Was able to find the following documentation:
https://www.daywireless.com/blog/2016/0 ... -xpr-7550/

k3td

What are the differences between the two versions, including analog and MotoTRBO operation in the 440 MHz amateur band?

Thanks in advance for the help.

k3td

Excellent, thank you Astro Spectra!

k3td

What, if anything, is involved in programming these portables for DMR and conventional frequencies in the 2 meter, 440 and 902 MHz bands? Several years ago I programmed my 5550 and as I recall there was nothing I needed to do to get it to accept frequencies in the 440-450 MHz range?

Thanks and 73,

k3td

What, if anything, is involved in programming these portables for DMR and conventional frequencies in the 2 meter, 440 and 902 MHz bands? Several years ago I programmed my 5550 and as I recall there was nothing I needed to do to get it to accept frequencies in the 440-450 MHz range?

Thanks and 73,

k3td

What, if anything, is involved in programming these portables for DMR and conventional frequencies in the 2 meter, 440 and 902 MHz bands? Several years ago I programmed my 5550 and as I recall there was nothing I needed to do to get it to accept frequencies in the 440-450 MHz range?

Thanks and 73,

k3td

Will there be on-site turbo repeaters?

k3td

Other than programming the radio with Motorola CPS, is there anything I need to do to get it working on 902/927 MHz amateur frequencies? Also, is there a particular version of CPS I will need from Motorola? Sorry for the newbie questions, that last Motorola RSS I purchased from them was for analog S...

k3td

Home Depot has them in the hardware section.

k3td

I picked up two very clean MCS2000 Model I radios on eBay, and they came with different microphones. Is there a difference in audio characteristics for these mics? Also, I'm curious as to the significance of the leading AA in the model number?

Thanks,

k3td

N4KVE wrote:There are many mikes which will work with the MCS. Maxtrac, Radius, GTX, large small etc. For speakers, since the model 1 has a built in speaker, you will have to use the acc connector & any Mot spkr. Trumpsurplus sells the factory plugs. GARY N4KVE

Thanks Gary!

k3td

What are the model numbers for microphones and external speakers that are plug-and-play compatible with an MCS2000 Model 1?

Thanks!

k3td

nrembis wrote:Dont sweat that one, jumpers may be missing on accessory connector or its programmed wrong

Thanks so much!

k3td

I have a used MCS2000 M01WJL4PW4CN that shows FL 01/79 when turned on during the self check before the display changes to A C1. I believe FL 01/79 is a non-fatal error code but want to be sure before I have the radio programmed for amateur use. Do I need to be concerned about it?

Thanks,

k3td

Tom, thanks so much for the quick reply and the offer to share some install details. I would really appreciate that. I thought about the 12v in the armrest/console but was concerned I might have RFI issues - glad to hear that may work as it will make things much simpler. I assume the same would go f...

k3td

Would greatly appreciate any suggestions on routing the 12V dc cable from the battery through the front bulkhead near the center console. I tried probing with a steel antenna rod but couldn't find any place where I could get the rod through. Radio will be a 30 watt 900 MHz dash mount. Thanks in adva...

k3td

I missed your current location - should have seen that in your first post, sorry! God Speed for a safe and quick return home. Bottom line is, you can do all of the studying and practice exams online or using book and videos from various sources - but you will need to take the FCC exam in front of a ...

k3td

If your base has a Military Affiliate Radio System (MARS) facility, you can find other amateurs there who can give you info on how to take an FCC amateur test while depolyed. Here is a link to the Air Force MARS program with some info, it also includes links to the Army and Navy-Marine MARS programs...

k3td

I have a UHF A7 Spectra that is set up for zones. It will scan all of the frequencies in a Zone on a non-priority basis just fine. However, when I try to set the first and second priority modes, it takes me to a list of all the modes in the radio, not just the modes in that particular zone. Is that ...

k3td

That explains why I couldn't find it at http://www.mods.dk/ - it's too new! The good news is that any "new" rig would be capable of odd split repeaters.

k3td

I don't recognize that Kenwood model number. Is it a mobile?

k3td

Thanks everyone!

k3td

Here is a good place to start:
http://www.apcointl.org/frequency/docum ... Order.html

k3td

Thanks - once I make the change in RSS will the A4 plug in when the A7 is now, or do I need to change any hardware?

k3td

What needs to be changed (other than the control head)? I prefer knobs to push buttons while mobile.

k3td

Actually the subject makes sense, but maybe only to me! I saw a Spectra listed on eBay and the listing did not specify the firmware version of the MLM board, but it did say the radio was 12.5/25 kHz capable.

k3td

Thanks for the clarification. Looks like someone (on eBay) got a little creative in their description - what a shocker!

k3td

Can you determine anything about the firmware version of a VHF Spectra if you know that the radio is capable of 12.5 kHz or 25 kHz channel spacing?

k3td

Great info on the real story here:

http://www.800mhzrebanding.com/

k3td

One clarification - unlicensed use by Police (at 2 watts) is limited to frequencies in the FCC Part 90 Public Safety frequency pool.

k3td

I'm getting some intermittent operation of the Volume and Mode buttons on my A7 remote Spectra head. Occasionally, pressing the Volume (down) rocker switch will change modes, and pressing the Mode button will change Zones. Could this be a dirty contacts problem, or is it something more serious? Than...

k3td

Cool -- thanks!

k3td

I have a high power UHF Spectra in my Jeep with an A7 remote head. I would like to replace the A7 head with an A4 head. How tough is this to do? What hardware do I need besides the A4 control head?

Thank in advance for the help!

k3td

Just got the 4303 and installed it today. It seems to be just what I was looking for - better performance than a 1/4 wave without being "too" long. For the record, with a whip length of just over 11 inches at 446 MHz this antenna appears to be a 1/2 wave, not a 5/8 wave.

k3td

Thanks for the info! I forgot to mention the Spectras are conventional, not trunked.

k3td

Thanks Dave! The Comet works well, but at 24" tall unfortunately will not fit in my garage so I'll need to hold out for something shorter. I'll keep looking!

k3td

I have an an A4 remote mount VHF and an A7 remote mount UHF Spectra. Both are programmed for Zones. I have tried to follow the information in the Spectra Conventional Operating Manual, and have some questions about how scan works with Zones: I can't seem to create scan lists from within the Zone. Wh...

k3td

Thank you Kurt! I have used Maxrad stuff for years and prefer it. I'm using an MUF4303 5/8 wave antenna on 440 MHz and a 1/4 wave on VHF. I'll take your suggestion and contact some Maxrad reps and distributors to see if there are any 12725s left.

Thanks,

k3td

Anybody know of a single band commercial mobile antenna for the 1296 ham band for FM use (vertical polarization, not horizontal!)? I need something with about 3 db gain that is less than 19 inches tall so it will be no bigger than my VHF 1/4 wave antenna to make it possible to drive in/out of my gar...

k3td

Thank you!

k3td

What is the difference (if any) between the following Spectra system control cables:

30-80157M04
HKN4356B

Thanks!

k3td

Thanks Stan! The antenna will be mounted on the roof of my Grand Cherokee, along with a 1/4 wave for VHF high band and a TBD? antenna for 1.3 GHz. I had been using a Larsen dual band antenna for VHF/UHF with a dual band radio. It worked pretty well for UHF but I got tired of removing it every time I...

k3td

Anybody used a Maxrad MUF4303 or MUF4503 UHF 5/8 wave antenna? I'm looking for something with more gain than a 1/4 wave but no taller than a VHF high band 1/4 wave. At about 16 inches, this may be just right!

Thanks,

k3td

Thanks!

k3td

Anybody have a cutting chart for the Maxrad BMFT120 1/4 wave vertical? I need the length for 448 MHz. The chart with the antenna lists lengths for VHF high band and 800 MHz for the BMFT120, and for VHF high band and UHF for the MWB1320 wide band 1/4 wave. Unfortunately I can't find anything for UHF ...

k3td

I think California may be the only state to use 20 kHz channel spacing at 440 MHz for repeaters. Everywhere else is 25 kHz.

k3td

It is definitely UHF, that is what the U in the model number means. I think it is a programmable 15 watt mobile, but I can't find that particular model number in any reference of Uniden LMR model numbers.

Good luck,

Search found 59 matches

Fans for Spectra D44 UHF radiofor low power repeater -

Re: Differences between UHF 7550 and 7550e?

Re: Differences between UHF 7550 and 7550e?

Re: Differences between UHF 7550 and 7550e?

Differences between UHF 7550 and 7550e?

Re: XPR6550/6580/7550/7580

XPR6550/6580/7550/7580

XPR7550/7580/6550/6580 in amateur bands

XPR7550/7580/6550/6580 in amateur bands

Re: DAYTON 2014! Who's in? The official 2014 thread

MTX9250 conversion to amateur frequencies

Re: Legs for base radio.

HMN3596A or AARMN4025B for MCS2000?

Re: MCS2000 microphone and external speaker option

MCS2000 microphone and external speaker option

Re: FL 01/79 Error Code and MCS2000

FL 01/79 Error Code and MCS2000

Re: 12V power cable run for 2012 Outback 2.5i

12V power cable run for 2012 Outback 2.5i

Spectra dual priority scan questions?

Converting high power Spectra from A7 to A4 head?

Spectra MLM board firmware version?

Intermittent Volume and Mode switches on Spectra A7 head?

Spectra conversion - A7 to A4

Spectras with Zones - scanning questions

Mobile antenna for 1296 MHz?

Spectra system control cable part numbers?

Maxrad MUF4303/4503 3 dB UHF antenna - comments?

Cutting chart for MAXRAD BMFT120 1/4 wave?