Commercial Gear for CB?

[NDRADIONUT]

"Not to mention the Yaesu 8900 does not even receive below 28MHz.
prcguy

Quote:
Originally Posted by gewecke View Post
. Why would a db admin give illegal advice? 73, n9zas"


Well... It does but that would be even more illegal and ridiculous...

 

[walruspwaterhead]

If you want to stay in the cb range I would recommend what I have, it is a RCI-2970 or RCI-2950 and with a simple mod it can do the entire cb band right up to 30 mhz and that gives you 70 watts out. If you want the more commercial look you can also go with the RCI-2980 OR RCI-2995 Alot of radio shops will do the mod for you once you buy the unit(s). Documento sin título

 

[gewecke]

If you want to stay in the cb range I would recommend what I have, it is a RCI-2970 or RCI-2950 and with a simple mod it can do the entire cb band right up to 30 mhz and that gives you 70 watts out. If you want the more commercial look you can also go with the RCI-2980 OR RCI-2995 Alot of radio shops will do the mod for you once you buy the unit(s). Documento sin título

. Stephen he did say he wants to stay LEGAL... :wink: 73, n9zas

 

[prcguy]

I've got an 8900 in front of me with mods and no RX below 28MHz. It would be nice to receive lower if you know how to get it there....
prcguy

"Not to mention the Yaesu 8900 does not even receive below 28MHz.
prcguy

Quote:
Originally Posted by gewecke View Post
. Why would a db admin give illegal advice? 73, n9zas"


Well... It does but that would be even more illegal and ridiculous...

 

[NDRADIONUT]

Sorry I was mistaken it was this 8900 clone I saw it on...

http://446shop.com/views.asp?hw_id=203

http://www.alibaba.com/product-detail/Like-YAESU-FT-8900R-50W-26_60182708974.html

 

[SB-Wi]

. Stephen he did say he wants to stay LEGAL... :wink: 73, n9zas

I'll consider anything that does 4 watts AM. We're going to try a portable CB with the cross band repeater as a fallback if the HT is poor.

 

[Project25_MASTR]

I'll consider anything that does 4 watts AM. We're going to try a portable CB with the cross band repeater as a fallback if the HT is poor.

How would you construct your cross band repeater? (There is no turn-key option)

Anyway, try a portable CB…I've never liked them but you may.


Sent from my iPhone using Tapatalk

 

[SB-Wi]

How would you construct your cross band repeater? (There is no turn-key option)

Ideally use the external speaker and mic connections on the CB and accessory port on a TK-880. I'd need some advice and have questions but that's another thread.

A dispatcher is a good suggestion but isn't practical for us when the scale house doesn't have an operator.

 

[prcguy]

I have one of those also and it will cross band CB receive to any other band the radio is capable of. But that would be completely illegal as would cross banding CB to any other commercial band using a commercial hand held as the OP is considering.
prcguy

Sorry I was mistaken it was this 8900 clone I saw it on...

TYT TYT TH-9800 Quad Band Mobile 809 Chs CTCSS/DCS COMP Brand of Radio TYT

http://www.alibaba.com/product-detail/Like-YAESU-FT-8900R-50W-26_60182708974.html

 

[NDRADIONUT]

10-4 BACK DOOR....

 

[Project25_MASTR]

Ideally use the external speaker and mic connections on the CB and accessory port on a TK-880. I'd need some advice and have questions but that's another thread.

A dispatcher is a good suggestion but isn't practical for us when the scale house doesn't have an operator.

In short, the hardware needed to build a AM-FM bi-directional crossband repeater runs roughly $350 just for (quality) hardware controllers. You'd still need to get into the AM radio and pull the needed signals out (discriminator tap in the case your AM radio doesn't provide a COR signal, which most don't, audio, PTT). Then there's matching audio levels (which can be done easily using flat/discriminator levels)...is it really worth the work?

Another option (which would more legal). Use a dispatcher when someone is in the scale house. When someone is not, space some Ritron Call Boxes approriately (scale house, entrance, etc) on the UHF licensed frequency so they can "call".

Or, technically a unidirectional crossband setup could be used which receives AM, transmits UHF. Then using a PA system, one could transmit on UHF to instruct operators where they need to go (similar to other scale house operations). I know of a similar setup using a CB to contact trucks in a controlled access plant at the gate...vehicles without a CB the guard simply uses an intercom system.

 

[gewecke]

Another much simpler option no one has mentioned yet, is why not just simply post a sign with a cellular number to call for your incoming truck drivers? Most truckers have cells these days. The employee answering the cell would also have a uhf or cb radio for relay. This would be a whole lot cheaper right? :roll: 73, n9zas

 

[SouthernRoller]

The construction company I drive for owns multiple quarries and asphalt plants.All the equipment, scales, and control towers have CB radios and communicate with everyone entering or working there on a channel that is usually posted on a sign at the entrance. For instance sand quarries Ch.4, stone quarries Ch.1, asphalts plants Ch. 12,15,17 and 23 depending on location.

That system seems to work fine.

 

[KC2GIU]

Under the Part 95D, there are some neat rules for remote direct wire control of a CB and a phone connection. Thus, if a trucker has a cell phone, the dispatch can link the phone to the CB to transmit.
See sections:
§95.419 (CB Rule 19) May I operate my CB station transmitter by remote control?
and
§95.420 (CB Rule 20) May I connect my CB station transmitter to a telephone?

The phone patch rules seems to be very similar to the Ham radio phone patch that requires a person to manually make the patch and monitor the communication. In this case, the quarry dispatch would be the person(s). In ham radio, a license ham would monitor someone from the public speaking or cw the transmission under their oversight. This all makes logical sense. Just that CB has observation with a non-license person, thus it seems odd in that respect. however, with both, there is a control point operator at the radio physically. I think that is what the FCC requires in both situations.

 

[BBB007]

The construction company I drive for owns multiple quarries and asphalt plants.All the equipment, scales, and control towers have CB radios and communicate with everyone entering or working there on a channel that is usually posted on a sign at the entrance. For instance sand quarries Ch.4, stone quarries Ch.1, asphalts plants Ch. 12,15,17 and 23 depending on location.

That system seems to work fine.

It's a great system. This is what all quarries in our area do. As CB operators we share the frequencies and understand that it is necessary for Triaxle, loader and dispatchers to communicate properly for their businesses to operate. One big happy 11 meter family if you will.

Since this is the CB section of the forum I suggest using 10/11 meter radios with dual finals. 4 watts will not ever cut it, plain and simple. Fact: Too many man made sources of radio interference exist today for a 4 watt transmitter to be effective during the daylight hours.

A dual final radio will net 10-30 watts AM and run on a cigarette lighter plug. You can use one as a base station with a 15 amp 12 volt power supply. DO NOT worry about the legality. Nothing is enforced on 11 meters anymore. (Why folks beat the anti-export radio drum always baffles me and no, please, do not explain it to us again. Thank you )

This is your business; you want consistent communication abilities with your workers and customers. Again do not not waste your hard earned money and try to mess around with the 4 watt toy CB stuff. Also, invest in good 95% rated coax and good quality antennas. Sirio and Stryker make some good antennas.

This is a tried and proven performer in the industry:

http://www.amazon.com/Galaxy-DX-29HP-Dx-29hp/dp/B005C48614

 

[prcguy]

So your recommending a commercial business use an illegal radio on a full time basis and subject themselves to potential fines? Why not also recommend the drivers do crack cocaine to pass the time sitting it their trucks all day?
prcguy

It's a great system. This is what all quarries in our area do. As CB operators we share the frequencies and understand that it is necessary for Triaxle, loader and dispatchers to communicate properly for their businesses to operate. One big happy 11 meter family if you will.

Since this is the CB section of the forum I suggest using 10/11 meter radios with dual finals. 4 watts will not ever cut it, plain and simple. Fact: Too many man made sources of radio interference exist today for a 4 watt transmitter to be effective during the daylight hours.

A dual final radio will net 10-30 watts AM and run on a cigarette lighter plug. You can use one as a base station with a 15 amp 12 volt power supply. DO NOT worry about the legality. Nothing is enforced on 11 meters anymore. (Why folks beat the anti-export radio drum always baffles me and no, please, do not explain it to us again. Thank you )

This is your business; you want consistent communication abilities with your workers and customers. Again do not not waste your hard earned money and try to mess around with the 4 watt toy CB stuff. Also, invest in good 95% rated coax and good quality antennas. Sirio and Stryker make some good antennas.

This is a tried and proven performer in the industry:

http://www.amazon.com/Galaxy-DX-29HP-Dx-29hp/dp/B005C48614

 

[Rred]

"Maybe pick up some cheap Chinese Bao Fangs for the company folks "
And when the FCC gets a complaint...the unlicensed commercial user of uncertified radios will be fined $10,000 per radio, for a start.

The best way to stick to CB, would be to get some small CB's (they're down to the size of paperback books) and have a local electronics tech castrate the power final(s) in them, so they only ran at low power. That would allow running them with a conventional rechargeable battery or pack, and attaching a compact antenna. Put the whole thing in a small nylon pouch and either put a belt loop on it, or a strap.
Not conventional, not off the shelf, but the FCC will not complain because you have REDUCED the output power, and you'll have portable CB's. Find a guy to do the job, have some spares made up, and don't worry about the ultimate durability, just treat them like electronics, not hammers.

 

[BBB007]

So your recommending a commercial business use an illegal radio on a full time basis and subject themselves to potential fines? Why not also recommend the drivers do crack cocaine to pass the time sitting it their trucks all day?
prcguy

I understand that there is a misunderstanding of understanding.

The Anytone Smart CB is a super compact commercial grade radio, albeit with a single MOSFET final. Max power is around 10+ watts.

 

[KF4UWL]

If you want to stay in the cb range I would recommend what I have, it is a RCI-2970 or RCI-2950 and with a simple mod it can do the entire cb band right up to 30 mhz and that gives you 70 watts out. If you want the more commercial look you can also go with the RCI-2980 OR RCI-2995 Alot of radio shops will do the mod for you once you buy the unit(s). Documento sin título

UHH NO!
The US CB band runs 26.965 -27.405Mhz as you well know.
28 Mhz to 29.7 Mhz is the US Ham band.
There is also Public Service and Commercial radio in that range as well.
There is No US CB band that goes to 30!

 

[KF4UWL]

Ideally use the external speaker and mic connections on the CB and accessory port on a TK-880. I'd need some advice and have questions but that's another thread.

A dispatcher is a good suggestion but isn't practical for us when the scale house doesn't have an operator.

§95.607 CB transmitter modification.
Only the holder of the grant of authorization of the particular certificated CB transmitter may make the modifications permitted under the provisions for certification (see part 2 of this chapter.) No grantee shall make any of the following modifications to the transmitter without prior written permission from the FCC (Federal Communications Commission):

(a) The addition of any accessory or device not specified in the application for certification and authorized by the FCC in granting the certification;

(b) The addition of any switch, control or external connection;

(c) Any modification to provide for additional transmitting frequencies, increased modulation level, a different form of modulation, or increased TP (RF transmitter power expressed in W (watts), either mean power (TP averaged over at least 30 cycles of the lowest modulating frequency, typically 0.1 seconds at maximum power) or peak envelope power (TP averaged during 1 RF cycle at the highest crest of the modulation envelope), as measured at the transmitter output antenna terminals.)

[53 FR 36789, Sept. 22, 1988, as amended at 63 FR 36610, July 7, 1998]